This Refrigerator Works on simple Vapour Compression Cycle. Continuously circulating, evaporating, and condensing a fixed supply of refrigerant in a closed system accomplish mechanical refrigeration. Evaporating occurs at a low temperature and low pressure while condensation occurs at a high temperature and pressure. Thus, it is possible to transfer heat from an area of low temperature (i. e. refrigerator cabinet) to an area of high temperature (i.e. kitchen) Beginning the cycle at the evaporator inlet the low pressure liquid expands, absorbs heat, and evaporates, changing to a low pressure gas at the evaporator outlet. The Compressor pumps this gas from the evaporator through the accumulator increases its pressure, and discharges the high pressure gas to the condenser accumulator is designed to protect the compressor by preventing slugs of liquid refrigerant from passing directly into the compressor. An accumulator should be included on all systems subjected to varying load conditions or frequent compressor cycling. In the condenser, heat is removed from the gas which then condenses and becomes a high pressure liquid. In some systems this high-pressure liquid drains from the condenser into the liquid storage or receiver tank. On other systems, both the receiver and the liquid line valve are omitted. A heat exchanger between and the liquid line and the suction line is also an option item which may or may not be includes in a given system design. Between the condenser and the evaporator an expansion device is located. Immediately preceding this device is a liquid line strainer/ drier which prevent plugging of the valve or tube by retaining scale, dirt and moisture. The flow of refrigerant into the evaporator is controlled by the pressure differential across the expansion device or, in the case of a thermal expansion valve, by the degree of superheat of the suction gas. Thus, the thermal expansion valve shown requires a sensor bulb located at the evaporator outlet. In any case, the flow of refrigerant into the evaporator load increase as the evaporator load increases. As the high pressure liquid refrigerant enters the evaporator it is subjected to a much lower pressure due to the suction of the compressor and the pressure drop across the expansion device. Thus the refrigerant tends to expand and evaporate. In order to evaporate the liquid must absorb heat from the air passing over the evaporator.Eventually the desired air temperature is reached and the thermostat or cold control will break the electrical circuit to the compressor motor and stop the compressor. As the temperature of the air through the evaporator rises, the thermostat or cold control remakes the electrical circuit. The compressor motor and starts, and the cycle continue

Junker's Gas Calorimeter used in Petroleum Industries/Laboratory & R&D Centres, Coke Oven Batteries, Thermal Power House Cement Industries, Gas Companies, Steel Plants and Fertilizer Industries. Junker's principal of Burning of known Volume of Gas under maximum efficient method of heat transferring conditions and imparting the heat to a stealing flowing water and finding out the amount of heat transferred. This is known as the calorific value of the gas. The equipment consists of calorimeter with burner on a tripod stand, Gas Flow meter (non-recording type) pressure Governor and Digital temperature indicator. SERVICE REQUIRED:-15Kg LPG Gas CylinderHome use Gas Regulator. Continues Water Supply. Matchbox.Suitable Table space to mount apparatus.15 Amps. Single Phase Electrical Connection

Basic cantilever beam is the best example so as to demonstrate effect of load so as to generate the strain. Here the fact is very well known that generated strain is directly proportional to load. The setup is provided with loading arrangement for cantilever beam with strain gauges and necessary signal conditioning circuit. SPECIFICATIONS

1. Cantilever beamCapacity: - 2 kgMaterial: - Mild Steel

2. Indicator: -Least Count: -1 Micro StrainDigit: - 3 1/2

3. Weights: - Max 2 kg in steps of 100 gm

We are engaged in offering quality Cascade Refrigeration System, which is a multistage application in which two separate refrigerant systems are interconnected in such a manner that one provides the means of heat rejection (condenser) for the other. Our Cascade Refrigeration System has a lower system which operates at a much lower temperature. The Cascade Refrigeration System, provided by us, comprises of additional feature, over compound systems for permitting the use of different refrigerants in each cycle of the cascade.

Why Our Cascade Refrigeration System? Robust bodyMultistage ApplicationHigh performanceEnergy efficientEffective CoolingHigh DurabilityLow maintenance

The JPTI units of a motorized gyroscope consist of a disc rotor mounted on a horizontal shaft rotating in the ball bearing of one frame. The rotor shaft is coupled to a motor mounted on a turning frame having bearings in the yoke frame which is free to rotate about vertical axis. Thus a disc can be rotated about three perpendicular axes. Angular scale and a pointer fitted to frame help to measure precision rate. FEATURESDemonstrates relationship between applied torque and the rate and direction ofrotation and precision.Gyroscopic couple easily varied by an assortment of weights.Precisely balanced rotor.Completely portable and suitable for classroom demonstration.Useful to verify the relationship T=IwwP. RANGE OF EXPERIMENTSObservation of gyroscopic behaviour (two laws and stability).Experimental justification of the equation T=IwwP for calculating the gyroscopiccouple by observation and measurement of results for independent variations inapplied couple (T) and precision (WP). SPECIFICATIONDisc rotor - 30cm dia.10m.m. thick.Drive - A.C. /D.C. single phase motor.Overall size - 30 cm dia. Base, 50 cm. height.Weight - 30 Kg approx. SERVICE REQUIREDSingle Phase 15 amp Electric Connection.Tachometer for speed measurement.Suitable bench area to mount the instrument.

MECHANICAL SET UP SPECIFICATIONS:

1. With 0.5 HP PMDC Motor & Dimmer Speed Control.2. Square Pipe Structure.3. Two Fixed Stroke / Amplitude working: 10 mm and 20 mm max.4. 30 X 30 x 0.8 cm Vibrating Platform.(Max. Test Load 5 Kgf)5. Vibration Frequency from 1 to 15 Hz.6. Powder Coated Finish.7. Quantity: 1 Nos. ACCELEROMETER SPECIFICATIONS:

1. Display: Digital - 16 x 2 Alphanumeric LCD. 2. Range: a. For g : 10g.b. For f : 15 Hz. c. Displacement: 10 mm Or 20 mm - fixed.3. Least Count: a. For g : 0.01g. b. For f : 1 Hz. c. Displacement : 1 mm.4. Sensor:Proximity Sensor Style Pickup: 1 noLMPT style pick up 1 no Supply: 230V A. C. Single Phase 50 Hz Stabilized. 5. Enclosure: Powder Coated. 6. Quantity: 1 Nos.

Here a simple setup is provided using which one can experiment with speed measurement characteristics of inductive type proximity switch. Here setup is supplied with PMDC motor & Speed controller unit.

SPECIFICATIONS

1. Motor: -Type: - variable speedSpeed: - 1000 rpm

2. Sensor: -Type: - Optical

3. Speed IndicatorRange: - 30 to 9999 rpm

4. Speed ControllerType: - Solid State

Here a simple setup is provided using which one can experiment with speed measurement characteristics of inductive type proximity switch. Here setup is supplied with PMDC motor & Speed controller unit. SPECIFICATIONS1. Motor: -Type: - variable speedSpeed: - 1000 rpm

2. Sensor: -Type: - InductiveSize: - M18

3. Speed IndicatorRange: - 30 to 9999 rpm

4. Speed ControllerType: - Solid State

SPECIFICATIONS: 1. Type : Open type Wind Tunnel.2. Test Section : 300mm x 300mm x 1000 mm. long with two Perspex windows.3. Blower Fan : 10 blades /nylon fan.4. Motor : 5 HP D.C shunt motor, 1500rpm.5. Speed Controller : 3 phase, thyristor controller to give smooth Speed control.6. Air Velocity : In test section - 1 to 25 m/sec.7. Duct : Manufactured out of ms sheet. 8. Length of Tunnel : 7 meter Aprox.9. Manometer : 15 tube acrylic manometer with inclination arrangement.10.Pitot tube

WOODEN MODELS:1. Aerofoil: a) Symmetrical b) Unsymmetrical. 150mm width and 250mm long with15 piezometric tapping with 0-360 degree protractor.2. Cylindrical Model: 75mm, dia., 250mm long with piezometric tapping and0-360 degree protractor.3. Spherical Model: - 100mm, dia.

Lift & Drag Indicator1. Lift Display: - 3 1/2Least count: - 0.1 kgRange : - 6 kg

2. Drag Display: - 3 1/2Least count: - 0.1 kgRange : - 6 kg

The 'J. P. T. I.' Tilting flume consists of a channel of size as in specifications. At the inlet a flow steadying section is provided so that there will be fewer disturbances at the test section. The gates provided at the upstream & downstream of the test section help to regulate the depth of flow. Depth measurements can be achieved with the help of a hook or point gauge mounted on a trolley which gives longitudinal and transverse movement. The slope of the bed can be adjusted to give positive or negative slopes. RANGE OF EXPERIMENT:-Study of open channel flow with slopeStudy of specific energy curveStudy of hydraulic jumpStudy of Nappe profiles over a sharp crested weirCalibration of sharp crested, Broad crested and ogee weirCalibration of a VenturiflumeStudy of flow under the sluice gate SPECIFICATION:-A hydraulic flume of c/s 200x300 mm & 6000 mm length with transparent window oneither sides of 1800 mm length. Sliding gates one at upstream and other at the downstream side.Screw jack for change of the slope of the flume.A Sump tank of sufficient capacity.Supply tank with waves damping arrangement.A 3 H.P. centrifugal monoblock pump.An Orifice meter with manometer to measure the discharge. Inlet/throat dimensions: 50/25 mm respectively.Trolley with point gauge for level measurement.Models supplied: Sharp crested weir (crest length 200 mm)Broad crested weirOgee weir or spillway.Venturi flume SERVICE REQUIRED:-Suitable Water supply. Suitable floor space to mount apparatus.15 amps Single Phase Electrical Connection.

Here simple demonstration setup is provided to experiment with LVDT for measurement of linear displacement. To vary the actual displacement an annual micrometer driven mechanism will be provided. Whereas for reference comparison same micrometer will be used. SPECIFICATIONS1. LVDT sensor with necessary signal conditioning circuit.2. Micrometer comparison scale.3. Manual micrometer driven mechanism for displacement variation.4. Digital Indicator: -Least Count: - 0.1 mmDigit: - 3 1/25. Range 0 to 20 mm.6. Powder coated enclosure

The J.P.T. I. unit consist of a pipe emerging out from manifold with a Rotameter a flow regulating valve is provided to regulate water supply of pipe. A measuring tank is provided to collect the flow. The actual flow rate can be measure and verified.

RANGE OF EXPERIMENT:-To calibration of Rotameter with actual discharge.

SPECIFICATION:-Rotameter- 0 to 500 LPH. Flow control valve to change Discharge.Transparent pizometer tube with scale to measure discharge from measuring tank.Measuring tank- 295 X 345 X 345 mmSump tank- 900 X 350 X 350 mmUsha or Crompton Greaves motor for recalculating type unit.- 0.5H.P. Self PrimingStop clock.

SERVICE REQUIRED:-Suitable Water supply.Suitable floor space to mount apparatus.15 amps Single Phase Electrical Connection.

The J. P. T. I. unit consists of a tube in tube type concentric tube type exchanger hot fluid flow through inner tube and cooling water flows through the annulus. The apparatus is mounted on a board with system of valves and pipes. The heat exchanger arranging to instruction shown on board. Hot fluid flows always in one direction & cold fluid flow direction can be changed accordingly. Inlet temperature of heat exchanger can be measured by thermometers. An electric geyser is used to heat the water. Outer tube of the heat exchanger is provided with adequate thermocouple insulation to minimize the heat losses.

FEATURES:-Performance and working of heat exchangers can be studied easily.Both parallel and counter flow arrangements can be studied on the sameset-up with simple operation of valves.Wide range of experiments can be performed with varying flow rates on hot and cold side.Ideal for group studies.

SPECIFICATION:-Heat exchanger :- a) Outer tube - I. D. - 25 mm 1 m. long G. I.b) Inner tube - O. D - 12.5 mm 1 m. long Copper.Valve arrangement for parallel flow/counter flow operation and flow control.Geyser to obtained hot water.Thermometers to measures inlet and outlet temperature of hot and cold water.

RANGE OF EXPERIMENTS:-To determine heat transfer coefficient for a tube in tube type heat exchanger.To calculate -a) Rate of heat transfer.b) Long mean temperature difference.c) Overall heat transfer coefficient (H) for both parallel and counter-flow condition, under same flow rates.To compare values of heat transfer coefficient obtained experimentally with thosecalculated from empirical formula for flow through tubes and annually.

SERVICE REQUIRED:-Suitable flour area to mount the instrument.15 A. Single Phase A.C. supply with earthing connection.Continuous water supply.

The apparatus consists of a variable speed D.C. Motor. Driving Pulley and Driven Pulley of equal diameters. The pulleys are mounted on input shaft (motor shaft) and output shaft. The Driven pulley can slide on the base only with bearing block to change the initial tension in belt. Brake Drum is mounted on the output shaft, which helps to measure power output. The motor speed is varied by Dimmerstat. Driving and Driven pulley speeds are indicated by a two channel digital Speed Indicator. With the help of Stroboscope it is possible to demonstrate the slip of belt on Driving and Driven Pulley.

SPECIFICATIONSD.C. Motor- 1 HP, 1500 RPM, 230V variable SpeedDriving and Driven Pulleys of equal diameters (flat pulleys)Brake Drum along with spring balance and rope arrangement is provided to load the system.Flat belts of fixed length of following belt material.Fabric BeltCanvas BeltRubber BeltBelt tightening arrangement - Bearing block is sliding and dead weight can be applied toset the initial tension in belt.Speed Indicator: Two channel digital speed indicator with switch to change the channel.

EXPERIMENTATIONSTo measure co-efficient of friction between pulley material and different belt materials To measure power transmitted with varied belt tension and plotting a graph of(T1-T2) V/S (T1+T2) i.e. "Tension Characteristics".To measure percentage slip at fixed belt tension by varying load on the Brake Drum andplot the graph of (T1-T2) V/s percentage slip i.e. Slip Characteristics. Finding a Creep Zone from graph.To measure belt slip speed and observe the limiting value of load at constant speedwhen the slip just starts. SERVICE REQUIRED-Single Phase 15amp Electrical Connection.

Advanced customized electro-pneumatic trainer kit is capable of being used to demonstrate the design, construction and application of electro-pneumatic components and circuits. The Kit is designed to satisfy following objectives: Function & identification of Electro-pneumatic components & their symbols.Direct and indirect manual controls, stroke dependant controls, time dependantand pressure dependantControls with time delay, pressure sequence valves.Design & function of an electro-pneumatic System.Functional diagrams.Logic AND/OR function to start signals.Application and fault findings of Electro Pneumatic controls.Pneumatic power section Electric control section.To empower students to design their own circuits.The kit is modular and upgradeable.Training Manuals provided for Operation with Ease. The components are capable of being mounted on an appropriate profile plate with grooves for secure and flexible positioning so that the components can be clamped firmly, quickly and safely through quick fix adaptors. Industrial components are used in the kit so that the students get hands on practical training in using industrial components.

TECHNICAL SPECIFICATIONS1] Profile Plates & Stand: The anodized Aluminium profile plate is the basis for training. All components fit securely & safely onto the profile plate with safe fixing arrangement.Grid Dimensions: 50mm, Size: 1000 700mm. 2] Shuttle Valve (OR): 1 No. : The Shuttle Valve is switched through to the output by applying compressed air to one of the inputs (OR) function. Design type is OR gate (shuttle valve). Pressure range: (1-10 Bar) 3] Dual Pressure Valve (AND): 1 No. : The dual-pressure Valve is switched through to the output by applying compressed air to both the inputs (AND) Function. Design type is AND Gate (Dual Pressure Valve).Pressure Range: (1-10 Bar) 4] One way flow Control Valve Assembly: 1 No. : - The One way flow control valve is a combination of flow control valve & a non-return valve. The cross section of the restrictor can be set by means of a Knurled screw. Design type is combined flow control Valve. Pressure range (0.5-10 Bar) 5] Pressure Sequence Valve assembly: 1 No.:- The pressure of the control signal can be set by means of the pressure setting screw (variable). Design type is Poppet Valve with return spring. Operating Pressure range (1.8 8 bar). Control Pressure range - (1 8 bar). 6] Single Acting Cylinder: 1 No. : Design type is Piston Cylinder. Operating Pressure 10 bar. Stroke length Max. 100mm. 7] Double Acting Cylinder: 1 No. : Design Piston Cylinder. Operating Pressure 10 barStroke Length Maximum 100 mm 8] Manifold Assembly: 1 No. : - Manifold with 6 (2 3) Hex-Ball Valve. A common manifold for plastic tubing allows supply of compressed air to the control via six individual ports (for plastic tubing PUN 40.75) 9] Filter regulator with Gauge: Filter control valve with pressure gauge, gate valve, quick push-pull connectors & quick couplings mounted on a swivel support. The filter with water separator removes dirt, pipe sinter, rust & condensed water. The pressure control valve regulates the supply. Air pressure to the set operating pressure & compensates pressure fluctuations. The filter bowl has a condensate drain valve. The shutoff valve ventilates & vents entire control. Input pressure Maximum (16 bar), Output pressure Max 12 bar, grade of filtration 40 mm approx., Connector G 1/8 , / PU 4 10] Relay, Three fold: 2 No. : The device has three relays with terminals and two buses for power supply. Contact set 4 change-over switches, Contact load maximum 5 A., 11] Signal Input, Electrical: 1 No. : The device contains an illuminated push-button switch (control switch) & two illuminated push buttons (momentary contact switches) with terminals and two buses for power supply. Contact set 2 makes, 2 breaks, and Contact load maximum 1A. 12] Indicator & Distributor Unit, electrical : 1 No. : The device contains an acoustic indicator and four lamps with terminals and three buses for power supply. Through-contact socket pairs per lamp allow the element to also be used as a Distributor. 13] Proximity switch with attachment: -2 No. : The Proximity switch consists of a sensor, the mounting kit and the cable. This proximity switch gives a signal when it detects a metal. The status is indicated by an LED. Switching Voltage 24 VDC, Switching current max. 200 mA, Switching Power 6 W approx, switching accuracy - 0.1mm 14] 3/2 Solenoid Valve, Single with LED, 1No. : The status is indicated by an LED on the housing. The valve is equipped with a manual override. Pneumatic Technical data: Design type is spool valve, pilot controlled with return spring, Pressure range: 250-800 kPa(2.5-8 bar), Electrical Technical data: Power consumption 1.5 W 15] 5/2 way single Solenoid Valve with LED: 1No. : The status is indicated by an LED on the housing. The valve is equipped with a manual override. Pneumatic Technical data: Design type is spool valve, pilot controlled with return spring, Pressure range: 250-800 KPa (2.5-8 bar), Electrical Technical data: Power consumption 1.5 W 16] 5/2 Solenoid Valve, Double with LED: 1 No. : The statuses are indicated by LEDs on the housings. The valve is equipped with two manual overrides. Pneumatic Technical Data: Design-spool valve with pilot control, Pressure range 150-800KPa (1.5-8 bar)Electrical Technical Data: Power Consumption 1.5 W 17] Pneumatic Electric convertor:-1 No.: The pneumatic electric convertor can fulfil 3 functions: Pressure Switch, Vacuum Switch and Differential Pressure Switch. Pneumatic Technical Data: Pressure Ranges: Pressure Switch connector P1 - 0.25 3.5bar, Vacuum Switch- -0.2- -0.8 bar Differential Pressure Switch: Connectors P1.P2 - (-0.95 3.5 bar), Switching Current: - 400 mA. 18] Limit Switch, Left Actuated 1 No. : The electrical limit switch comprises a mechanically operated micro switch. When the roller lever is pressed, for example, by control cam of a cylinder, the micro-switch is actuated. The circuit is closed or opened via the contacts. The micro-switch can be wired as a normally open or normally closed or changeover contact. Contact load: maximum 5A, switching frequency maximum 200Hz, Reproducible accuracy 0.2mm, Switch travel 2.7 mm, Actuator force 5N 19] Limit Switch, Right actuated 1 No. : The electrical limit switch comprises a mechanically operated micro switch. When the roller lever is pressed, for example, by control cam of a cylinder, the micro-switch is actuated. The circuit is closed or opened via the contacts. The micro-switch can be wired as a normally open or normally closed or changeover contact. Contact load: maximum 5A, switching frequency maximum 200Hz, Reproducible accuracy 0.2mm, Switch travel 2.7 mm, Actuator force 5N 20] Equipment Tray 1 No. : MS powder coated tray with slots for placing components to be supplied with Electro-pneumatic supplementary kit. 21] Power Supply Unit 1 No.: Input Voltage - 230/115 V Ac (47-63 Hz.), Output Voltage 24 V DC, short circuit proof, output current Max. 4.5 A, Connection Cable 3m 22] Plug in adapter: For mounting components with plug-in foot on the aluminium profile plate. 23] Quick Push-Pull connectors: Sufficient shall be supplied for branching of the tubing for making of the circuitry. 24] Plastic Tubing: PUN 40.75, Exterior Diameter-6mm, Interior Diameter- 4mm, Transparent 10mtrs, Blue-10mtrs. 25] Set of moulded Cables:1.5 Meter (2 core) ________________6 No.1 Meter (3 core) _________________ 3 No.300 mm Red: - 06 No.300 mm Black: - 06 No.

Range Of Experiments:Study of Advanced Electro Pneumatic TrainerStudy of various Pneumatic ComponentsStudy of Pneumatic & Electro-pneumatic Circuits

Services Required:230 V AC, 50 Hz Power Supply.Dry, Compressed, Clean Air supply at 4-5 Kg/Cm.

Note: All descriptive matter and illustrations are intended to give only a general idea of the equipment. Detailed specifications may be altered at the companys discretion without any notice.

Measurement of Torque is a very essential phenomenon, because by nature itself Torque is a very difficult parameter to understand. Also Torque is a very important parameter from Design Engineers point of view. Because it is the key parameter for Hp & other related calculations for Motor or Gear Boxes etc. Here main aim is to demonstrate & explain about what Torque is & then how to measure it. SPECIFICATIONS1. Torque LeverLength: - 0.5 MeterMaterial: - Mild Steel

2. Digital Indicator: -Least Count: - 0.1 Kg-MDigit: - 3

3. Weights: - Max 2 kg in steps of 100 gm

The JPTI unit consists of a two circular aluminium plates of identical dimensions. One of the two plates is the blackened and considered as black surface. While other plates is the test plates. Both the plates have Nichrome wire heater bound in mica sheet attached to them. Both the plates are kept in close enclosure. Supply of heat to both the plates is given by different variances measured by a voltmeter & ammeter. Heat input to both the plates can be read with the help of SPDT switches. A temperature indicator is provided to measure the temperature of both the plates. SPECIFICATIONS:-Diameter of Test Plate = 0.18 mDiameter of Black Plate = 0.18 mTemperature indicator = 0 300 0CAmmeter = 0 - 5 AVoltmeter = 0 300 VDimmerstate (2Nos.) = 1000 wattHeater = Nichrome strip wound on mica sheet.Enclosure = With one side of Acrylic sheet

FEATURES:-Emissive of a non black surface can be determined over a range of temperature.Ideal for group studies & demonstration.Panellized instruments mounted on a control panel.Easy to operate.

SERVICE REQUIRED:-Suitable bench area to mount the instrument.15 amps, Single Phase A. C. supply with earthing connection.

All the components of heat pump Test Rig are displayed on powder coated fabricated stand. The primer consists of a hermetically sealed compressor, heat rejection chamber, drier-filter, expansion device, and heat absorption chamber. Hot vapours from the heat absorption chamber in the tank are sucked by the compressor, are compressed & sent to the heat rejection chamber. Liquid emerging out from the heat rejection chamber passes through the expansion device; it is throttled to low pressure & temperature & sent to heat absorption device where it boils. A drier filter is in the way to throttling device. Separate pressure gauges are provided to measure heat absorption device & heat rejection device Pressures at various locations. Energy meter is provided to measure energy consumed by compressor. Rotameter in the liquid line is incorporated to measure the refrigerant flow. Digital temperature indicator displays temperatures at various locations as per the selection viz. temperature before & after compressor and before & after expansion.

LIST OF EXPERIEMNTS: To evaluate the COP of the system of heating & cooling cycle.To calculate CARNOT COP.To plot the actual Refrigeration Cycle on P-H chart.To study various components and controls used in heat pump.

The J.P.T.I. unit consists of two thin wall concentric copper spheres. The inner sphere houses the heating coil. Heating coil is made up of nichrome wire wound on mica sheet. The insulating powder packed between two shells. Power supply to the heater is given through a dimmerstat & is measured by voltmeter & an ammeter. Temperature can be measured with the help of thermocouples. Four thermocouple are embedded on inner sphere and six thermocouples are embedded on outer sphere. The entire ten temperature indicator, these reading enable of insulating powder.

SPECIFICATION:-Radius of the inner copper sphere - ri - 50mmRadius of the outer copper sphere - ro - 100 mmVoltmeter - 0 - 300 V Ammeter - 0 - 5 ADimmerstat - 1000 wattHeater - Mica Type.Temperature indicator - 0 - 300 0CThermocouple - No. 1 to 4 on inner sphere to measure TiThermocouple - No. 5 to 10 on outer sphere to measure T0Insulating powder Asbestos magnesia commercially available powder andPacked between the two spheres.

FEATURES:-Thermal conductivity of insulating powder can be calculated.Wide range of experiments can be performed to find value over a range of temperatures.Ideal for group studies & demonstration.Panelised instruments mounted on a control panel.Easy to operate.Useful for institutions, research laboratories & insulating powder manufactures

EXPERIMENTS:-To find out the thermal conductivity of the Insulating powder packed between the two spheres.

SERVICE REQUIRED:-15 amps, Single Phase A. C. supply with earthing connection.Suitable bench area to mount the instrument.

This Refrigerator Works on simple Vapour Compression Cycle. Continuously circulating, evaporating, and condensing a fixed supply of refrigerant in a closed system accomplish mechanical refrigeration. Evaporating occurs at a low temperature and low pressure while condensation occurs at a high temperature and pressure. Thus, it is possible to transfer heat from an area of low temperature (i. e. refrigerator cabinet) to an area of high temperature (i.e. kitchen) Beginning the cycle at the evaporator inlet the low pressure liquid expands, absorbs heat, and evaporates, changing to a low pressure gas at the evaporator outlet. The Compressor pumps this gas from the evaporator through the accumulator increases its pressure, and discharges the high pressure gas to the condenser accumulator is designed to protect the compressor by preventing slugs of liquid refrigerant from passing directly into the compressor. An accumulator should be included on all systems subjected to varying load conditions or frequent compressor cycling. In the condenser, heat is removed from the gas which then condenses and becomes a high pressure liquid. In some systems this high-pressure liquid drains from the condenser into the liquid storage or receiver tank. On other systems, both the receiver and the liquid line valve are omitted. A heat exchanger between and the liquid line and the suction line is also an option item which may or may not be includes in a given system design. Between the condenser and the evaporator an expansion device is located. Immediately preceding this device is a liquid line strainer/ drier which prevent plugging of the valve or tube by retaining scale, dirt and moisture. The flow of refrigerant into the evaporator is controlled by the pressure differential across the expansion device or, in the case of a thermal expansion valve, by the degree of superheat of the suction gas. Thus, the thermal expansion valve shown requires a sensor bulb located at the evaporator outlet. In any case, the flow of refrigerant into the evaporator load increase as the evaporator load increases. As the high pressure liquid refrigerant enters the evaporator it is subjected to a much lower pressure due to the suction of the compressor and the pressure drop across the expansion device. Thus the refrigerant tends to expand and evaporate. In order to evaporate the liquid must absorb heat from the air passing over the evaporator.Eventually the desired air temperature is reached and the thermostat or cold control will break the electrical circuit to the compressor motor and stop the compressor. As the temperature of the air through the evaporator rises, the thermostat or cold control remakes the electrical circuit. The compressor motor and starts, and the cycle continue

Junker's Gas Calorimeter used in Petroleum Industries/Laboratory & R&D Centres, Coke Oven Batteries, Thermal Power House Cement Industries, Gas Companies, Steel Plants and Fertilizer Industries. Junker's principal of Burning of known Volume of Gas under maximum efficient method of heat transferring conditions and imparting the heat to a stealing flowing water and finding out the amount of heat transferred. This is known as the calorific value of the gas. The equipment consists of calorimeter with burner on a tripod stand, Gas Flow meter (non-recording type) pressure Governor and Digital temperature indicator. SERVICE REQUIRED:-15Kg LPG Gas CylinderHome use Gas Regulator. Continues Water Supply. Matchbox.Suitable Table space to mount apparatus.15 Amps. Single Phase Electrical Connection

Basic cantilever beam is the best example so as to demonstrate effect of load so as to generate the strain. Here the fact is very well known that generated strain is directly proportional to load. The setup is provided with loading arrangement for cantilever beam with strain gauges and necessary signal conditioning circuit. SPECIFICATIONS

1. Cantilever beamCapacity: - 2 kgMaterial: - Mild Steel

2. Indicator: -Least Count: -1 Micro StrainDigit: - 3 1/2

3. Weights: - Max 2 kg in steps of 100 gm

We are engaged in offering quality Cascade Refrigeration System, which is a multistage application in which two separate refrigerant systems are interconnected in such a manner that one provides the means of heat rejection (condenser) for the other. Our Cascade Refrigeration System has a lower system which operates at a much lower temperature. The Cascade Refrigeration System, provided by us, comprises of additional feature, over compound systems for permitting the use of different refrigerants in each cycle of the cascade.

Why Our Cascade Refrigeration System? Robust bodyMultistage ApplicationHigh performanceEnergy efficientEffective CoolingHigh DurabilityLow maintenance

The JPTI units of a motorized gyroscope consist of a disc rotor mounted on a horizontal shaft rotating in the ball bearing of one frame. The rotor shaft is coupled to a motor mounted on a turning frame having bearings in the yoke frame which is free to rotate about vertical axis. Thus a disc can be rotated about three perpendicular axes. Angular scale and a pointer fitted to frame help to measure precision rate. FEATURESDemonstrates relationship between applied torque and the rate and direction ofrotation and precision.Gyroscopic couple easily varied by an assortment of weights.Precisely balanced rotor.Completely portable and suitable for classroom demonstration.Useful to verify the relationship T=IwwP. RANGE OF EXPERIMENTSObservation of gyroscopic behaviour (two laws and stability).Experimental justification of the equation T=IwwP for calculating the gyroscopiccouple by observation and measurement of results for independent variations inapplied couple (T) and precision (WP). SPECIFICATIONDisc rotor - 30cm dia.10m.m. thick.Drive - A.C. /D.C. single phase motor.Overall size - 30 cm dia. Base, 50 cm. height.Weight - 30 Kg approx. SERVICE REQUIREDSingle Phase 15 amp Electric Connection.Tachometer for speed measurement.Suitable bench area to mount the instrument.

MECHANICAL SET UP SPECIFICATIONS:

1. With 0.5 HP PMDC Motor & Dimmer Speed Control.2. Square Pipe Structure.3. Two Fixed Stroke / Amplitude working: 10 mm and 20 mm max.4. 30 X 30 x 0.8 cm Vibrating Platform.(Max. Test Load 5 Kgf)5. Vibration Frequency from 1 to 15 Hz.6. Powder Coated Finish.7. Quantity: 1 Nos. ACCELEROMETER SPECIFICATIONS:

1. Display: Digital - 16 x 2 Alphanumeric LCD. 2. Range: a. For g : 10g.b. For f : 15 Hz. c. Displacement: 10 mm Or 20 mm - fixed.3. Least Count: a. For g : 0.01g. b. For f : 1 Hz. c. Displacement : 1 mm.4. Sensor:Proximity Sensor Style Pickup: 1 noLMPT style pick up 1 no Supply: 230V A. C. Single Phase 50 Hz Stabilized. 5. Enclosure: Powder Coated. 6. Quantity: 1 Nos.

Here a simple setup is provided using which one can experiment with speed measurement characteristics of inductive type proximity switch. Here setup is supplied with PMDC motor & Speed controller unit.

SPECIFICATIONS

1. Motor: -Type: - variable speedSpeed: - 1000 rpm

2. Sensor: -Type: - Optical

3. Speed IndicatorRange: - 30 to 9999 rpm

4. Speed ControllerType: - Solid State

Here a simple setup is provided using which one can experiment with speed measurement characteristics of inductive type proximity switch. Here setup is supplied with PMDC motor & Speed controller unit. SPECIFICATIONS1. Motor: -Type: - variable speedSpeed: - 1000 rpm

2. Sensor: -Type: - InductiveSize: - M18

3. Speed IndicatorRange: - 30 to 9999 rpm

4. Speed ControllerType: - Solid State

SPECIFICATIONS: 1. Type : Open type Wind Tunnel.2. Test Section : 300mm x 300mm x 1000 mm. long with two Perspex windows.3. Blower Fan : 10 blades /nylon fan.4. Motor : 5 HP D.C shunt motor, 1500rpm.5. Speed Controller : 3 phase, thyristor controller to give smooth Speed control.6. Air Velocity : In test section - 1 to 25 m/sec.7. Duct : Manufactured out of ms sheet. 8. Length of Tunnel : 7 meter Aprox.9. Manometer : 15 tube acrylic manometer with inclination arrangement.10.Pitot tube

WOODEN MODELS:1. Aerofoil: a) Symmetrical b) Unsymmetrical. 150mm width and 250mm long with15 piezometric tapping with 0-360 degree protractor.2. Cylindrical Model: 75mm, dia., 250mm long with piezometric tapping and0-360 degree protractor.3. Spherical Model: - 100mm, dia.

Lift & Drag Indicator1. Lift Display: - 3 1/2Least count: - 0.1 kgRange : - 6 kg

2. Drag Display: - 3 1/2Least count: - 0.1 kgRange : - 6 kg

The 'J. P. T. I.' Tilting flume consists of a channel of size as in specifications. At the inlet a flow steadying section is provided so that there will be fewer disturbances at the test section. The gates provided at the upstream & downstream of the test section help to regulate the depth of flow. Depth measurements can be achieved with the help of a hook or point gauge mounted on a trolley which gives longitudinal and transverse movement. The slope of the bed can be adjusted to give positive or negative slopes. RANGE OF EXPERIMENT:-Study of open channel flow with slopeStudy of specific energy curveStudy of hydraulic jumpStudy of Nappe profiles over a sharp crested weirCalibration of sharp crested, Broad crested and ogee weirCalibration of a VenturiflumeStudy of flow under the sluice gate SPECIFICATION:-A hydraulic flume of c/s 200x300 mm & 6000 mm length with transparent window oneither sides of 1800 mm length. Sliding gates one at upstream and other at the downstream side.Screw jack for change of the slope of the flume.A Sump tank of sufficient capacity.Supply tank with waves damping arrangement.A 3 H.P. centrifugal monoblock pump.An Orifice meter with manometer to measure the discharge. Inlet/throat dimensions: 50/25 mm respectively.Trolley with point gauge for level measurement.Models supplied: Sharp crested weir (crest length 200 mm)Broad crested weirOgee weir or spillway.Venturi flume SERVICE REQUIRED:-Suitable Water supply. Suitable floor space to mount apparatus.15 amps Single Phase Electrical Connection.

Here simple demonstration setup is provided to experiment with LVDT for measurement of linear displacement. To vary the actual displacement an annual micrometer driven mechanism will be provided. Whereas for reference comparison same micrometer will be used. SPECIFICATIONS1. LVDT sensor with necessary signal conditioning circuit.2. Micrometer comparison scale.3. Manual micrometer driven mechanism for displacement variation.4. Digital Indicator: -Least Count: - 0.1 mmDigit: - 3 1/25. Range 0 to 20 mm.6. Powder coated enclosure

The J.P.T. I. unit consist of a pipe emerging out from manifold with a Rotameter a flow regulating valve is provided to regulate water supply of pipe. A measuring tank is provided to collect the flow. The actual flow rate can be measure and verified.

RANGE OF EXPERIMENT:-To calibration of Rotameter with actual discharge.

SPECIFICATION:-Rotameter- 0 to 500 LPH. Flow control valve to change Discharge.Transparent pizometer tube with scale to measure discharge from measuring tank.Measuring tank- 295 X 345 X 345 mmSump tank- 900 X 350 X 350 mmUsha or Crompton Greaves motor for recalculating type unit.- 0.5H.P. Self PrimingStop clock.

SERVICE REQUIRED:-Suitable Water supply.Suitable floor space to mount apparatus.15 amps Single Phase Electrical Connection.

The J. P. T. I. unit consists of a tube in tube type concentric tube type exchanger hot fluid flow through inner tube and cooling water flows through the annulus. The apparatus is mounted on a board with system of valves and pipes. The heat exchanger arranging to instruction shown on board. Hot fluid flows always in one direction & cold fluid flow direction can be changed accordingly. Inlet temperature of heat exchanger can be measured by thermometers. An electric geyser is used to heat the water. Outer tube of the heat exchanger is provided with adequate thermocouple insulation to minimize the heat losses.

FEATURES:-Performance and working of heat exchangers can be studied easily.Both parallel and counter flow arrangements can be studied on the sameset-up with simple operation of valves.Wide range of experiments can be performed with varying flow rates on hot and cold side.Ideal for group studies.

SPECIFICATION:-Heat exchanger :- a) Outer tube - I. D. - 25 mm 1 m. long G. I.b) Inner tube - O. D - 12.5 mm 1 m. long Copper.Valve arrangement for parallel flow/counter flow operation and flow control.Geyser to obtained hot water.Thermometers to measures inlet and outlet temperature of hot and cold water.

RANGE OF EXPERIMENTS:-To determine heat transfer coefficient for a tube in tube type heat exchanger.To calculate -a) Rate of heat transfer.b) Long mean temperature difference.c) Overall heat transfer coefficient (H) for both parallel and counter-flow condition, under same flow rates.To compare values of heat transfer coefficient obtained experimentally with thosecalculated from empirical formula for flow through tubes and annually.

SERVICE REQUIRED:-Suitable flour area to mount the instrument.15 A. Single Phase A.C. supply with earthing connection.Continuous water supply.

The apparatus consists of a variable speed D.C. Motor. Driving Pulley and Driven Pulley of equal diameters. The pulleys are mounted on input shaft (motor shaft) and output shaft. The Driven pulley can slide on the base only with bearing block to change the initial tension in belt. Brake Drum is mounted on the output shaft, which helps to measure power output. The motor speed is varied by Dimmerstat. Driving and Driven pulley speeds are indicated by a two channel digital Speed Indicator. With the help of Stroboscope it is possible to demonstrate the slip of belt on Driving and Driven Pulley.

SPECIFICATIONSD.C. Motor- 1 HP, 1500 RPM, 230V variable SpeedDriving and Driven Pulleys of equal diameters (flat pulleys)Brake Drum along with spring balance and rope arrangement is provided to load the system.Flat belts of fixed length of following belt material.Fabric BeltCanvas BeltRubber BeltBelt tightening arrangement - Bearing block is sliding and dead weight can be applied toset the initial tension in belt.Speed Indicator: Two channel digital speed indicator with switch to change the channel.

EXPERIMENTATIONSTo measure co-efficient of friction between pulley material and different belt materials To measure power transmitted with varied belt tension and plotting a graph of(T1-T2) V/S (T1+T2) i.e. "Tension Characteristics".To measure percentage slip at fixed belt tension by varying load on the Brake Drum andplot the graph of (T1-T2) V/s percentage slip i.e. Slip Characteristics. Finding a Creep Zone from graph.To measure belt slip speed and observe the limiting value of load at constant speedwhen the slip just starts. SERVICE REQUIRED-Single Phase 15amp Electrical Connection.

Advanced customized electro-pneumatic trainer kit is capable of being used to demonstrate the design, construction and application of electro-pneumatic components and circuits. The Kit is designed to satisfy following objectives: Function & identification of Electro-pneumatic components & their symbols.Direct and indirect manual controls, stroke dependant controls, time dependantand pressure dependantControls with time delay, pressure sequence valves.Design & function of an electro-pneumatic System.Functional diagrams.Logic AND/OR function to start signals.Application and fault findings of Electro Pneumatic controls.Pneumatic power section Electric control section.To empower students to design their own circuits.The kit is modular and upgradeable.Training Manuals provided for Operation with Ease. The components are capable of being mounted on an appropriate profile plate with grooves for secure and flexible positioning so that the components can be clamped firmly, quickly and safely through quick fix adaptors. Industrial components are used in the kit so that the students get hands on practical training in using industrial components.

TECHNICAL SPECIFICATIONS1] Profile Plates & Stand: The anodized Aluminium profile plate is the basis for training. All components fit securely & safely onto the profile plate with safe fixing arrangement.Grid Dimensions: 50mm, Size: 1000 700mm. 2] Shuttle Valve (OR): 1 No. : The Shuttle Valve is switched through to the output by applying compressed air to one of the inputs (OR) function. Design type is OR gate (shuttle valve). Pressure range: (1-10 Bar) 3] Dual Pressure Valve (AND): 1 No. : The dual-pressure Valve is switched through to the output by applying compressed air to both the inputs (AND) Function. Design type is AND Gate (Dual Pressure Valve).Pressure Range: (1-10 Bar) 4] One way flow Control Valve Assembly: 1 No. : - The One way flow control valve is a combination of flow control valve & a non-return valve. The cross section of the restrictor can be set by means of a Knurled screw. Design type is combined flow control Valve. Pressure range (0.5-10 Bar) 5] Pressure Sequence Valve assembly: 1 No.:- The pressure of the control signal can be set by means of the pressure setting screw (variable). Design type is Poppet Valve with return spring. Operating Pressure range (1.8 8 bar). Control Pressure range - (1 8 bar). 6] Single Acting Cylinder: 1 No. : Design type is Piston Cylinder. Operating Pressure 10 bar. Stroke length Max. 100mm. 7] Double Acting Cylinder: 1 No. : Design Piston Cylinder. Operating Pressure 10 barStroke Length Maximum 100 mm 8] Manifold Assembly: 1 No. : - Manifold with 6 (2 3) Hex-Ball Valve. A common manifold for plastic tubing allows supply of compressed air to the control via six individual ports (for plastic tubing PUN 40.75) 9] Filter regulator with Gauge: Filter control valve with pressure gauge, gate valve, quick push-pull connectors & quick couplings mounted on a swivel support. The filter with water separator removes dirt, pipe sinter, rust & condensed water. The pressure control valve regulates the supply. Air pressure to the set operating pressure & compensates pressure fluctuations. The filter bowl has a condensate drain valve. The shutoff valve ventilates & vents entire control. Input pressure Maximum (16 bar), Output pressure Max 12 bar, grade of filtration 40 mm approx., Connector G 1/8 , / PU 4 10] Relay, Three fold: 2 No. : The device has three relays with terminals and two buses for power supply. Contact set 4 change-over switches, Contact load maximum 5 A., 11] Signal Input, Electrical: 1 No. : The device contains an illuminated push-button switch (control switch) & two illuminated push buttons (momentary contact switches) with terminals and two buses for power supply. Contact set 2 makes, 2 breaks, and Contact load maximum 1A. 12] Indicator & Distributor Unit, electrical : 1 No. : The device contains an acoustic indicator and four lamps with terminals and three buses for power supply. Through-contact socket pairs per lamp allow the element to also be used as a Distributor. 13] Proximity switch with attachment: -2 No. : The Proximity switch consists of a sensor, the mounting kit and the cable. This proximity switch gives a signal when it detects a metal. The status is indicated by an LED. Switching Voltage 24 VDC, Switching current max. 200 mA, Switching Power 6 W approx, switching accuracy - 0.1mm 14] 3/2 Solenoid Valve, Single with LED, 1No. : The status is indicated by an LED on the housing. The valve is equipped with a manual override. Pneumatic Technical data: Design type is spool valve, pilot controlled with return spring, Pressure range: 250-800 kPa(2.5-8 bar), Electrical Technical data: Power consumption 1.5 W 15] 5/2 way single Solenoid Valve with LED: 1No. : The status is indicated by an LED on the housing. The valve is equipped with a manual override. Pneumatic Technical data: Design type is spool valve, pilot controlled with return spring, Pressure range: 250-800 KPa (2.5-8 bar), Electrical Technical data: Power consumption 1.5 W 16] 5/2 Solenoid Valve, Double with LED: 1 No. : The statuses are indicated by LEDs on the housings. The valve is equipped with two manual overrides. Pneumatic Technical Data: Design-spool valve with pilot control, Pressure range 150-800KPa (1.5-8 bar)Electrical Technical Data: Power Consumption 1.5 W 17] Pneumatic Electric convertor:-1 No.: The pneumatic electric convertor can fulfil 3 functions: Pressure Switch, Vacuum Switch and Differential Pressure Switch. Pneumatic Technical Data: Pressure Ranges: Pressure Switch connector P1 - 0.25 3.5bar, Vacuum Switch- -0.2- -0.8 bar Differential Pressure Switch: Connectors P1.P2 - (-0.95 3.5 bar), Switching Current: - 400 mA. 18] Limit Switch, Left Actuated 1 No. : The electrical limit switch comprises a mechanically operated micro switch. When the roller lever is pressed, for example, by control cam of a cylinder, the micro-switch is actuated. The circuit is closed or opened via the contacts. The micro-switch can be wired as a normally open or normally closed or changeover contact. Contact load: maximum 5A, switching frequency maximum 200Hz, Reproducible accuracy 0.2mm, Switch travel 2.7 mm, Actuator force 5N 19] Limit Switch, Right actuated 1 No. : The electrical limit switch comprises a mechanically operated micro switch. When the roller lever is pressed, for example, by control cam of a cylinder, the micro-switch is actuated. The circuit is closed or opened via the contacts. The micro-switch can be wired as a normally open or normally closed or changeover contact. Contact load: maximum 5A, switching frequency maximum 200Hz, Reproducible accuracy 0.2mm, Switch travel 2.7 mm, Actuator force 5N 20] Equipment Tray 1 No. : MS powder coated tray with slots for placing components to be supplied with Electro-pneumatic supplementary kit. 21] Power Supply Unit 1 No.: Input Voltage - 230/115 V Ac (47-63 Hz.), Output Voltage 24 V DC, short circuit proof, output current Max. 4.5 A, Connection Cable 3m 22] Plug in adapter: For mounting components with plug-in foot on the aluminium profile plate. 23] Quick Push-Pull connectors: Sufficient shall be supplied for branching of the tubing for making of the circuitry. 24] Plastic Tubing: PUN 40.75, Exterior Diameter-6mm, Interior Diameter- 4mm, Transparent 10mtrs, Blue-10mtrs. 25] Set of moulded Cables:1.5 Meter (2 core) ________________6 No.1 Meter (3 core) _________________ 3 No.300 mm Red: - 06 No.300 mm Black: - 06 No.

Range Of Experiments:Study of Advanced Electro Pneumatic TrainerStudy of various Pneumatic ComponentsStudy of Pneumatic & Electro-pneumatic Circuits

Services Required:230 V AC, 50 Hz Power Supply.Dry, Compressed, Clean Air supply at 4-5 Kg/Cm.

Note: All descriptive matter and illustrations are intended to give only a general idea of the equipment. Detailed specifications may be altered at the companys discretion without any notice.

Measurement of Torque is a very essential phenomenon, because by nature itself Torque is a very difficult parameter to understand. Also Torque is a very important parameter from Design Engineers point of view. Because it is the key parameter for Hp & other related calculations for Motor or Gear Boxes etc. Here main aim is to demonstrate & explain about what Torque is & then how to measure it. SPECIFICATIONS1. Torque LeverLength: - 0.5 MeterMaterial: - Mild Steel

2. Digital Indicator: -Least Count: - 0.1 Kg-MDigit: - 3

3. Weights: - Max 2 kg in steps of 100 gm

The JPTI unit consists of a two circular aluminium plates of identical dimensions. One of the two plates is the blackened and considered as black surface. While other plates is the test plates. Both the plates have Nichrome wire heater bound in mica sheet attached to them. Both the plates are kept in close enclosure. Supply of heat to both the plates is given by different variances measured by a voltmeter & ammeter. Heat input to both the plates can be read with the help of SPDT switches. A temperature indicator is provided to measure the temperature of both the plates. SPECIFICATIONS:-Diameter of Test Plate = 0.18 mDiameter of Black Plate = 0.18 mTemperature indicator = 0 300 0CAmmeter = 0 - 5 AVoltmeter = 0 300 VDimmerstate (2Nos.) = 1000 wattHeater = Nichrome strip wound on mica sheet.Enclosure = With one side of Acrylic sheet

FEATURES:-Emissive of a non black surface can be determined over a range of temperature.Ideal for group studies & demonstration.Panellized instruments mounted on a control panel.Easy to operate.

SERVICE REQUIRED:-Suitable bench area to mount the instrument.15 amps, Single Phase A. C. supply with earthing connection.

All the components of heat pump Test Rig are displayed on powder coated fabricated stand. The primer consists of a hermetically sealed compressor, heat rejection chamber, drier-filter, expansion device, and heat absorption chamber. Hot vapours from the heat absorption chamber in the tank are sucked by the compressor, are compressed & sent to the heat rejection chamber. Liquid emerging out from the heat rejection chamber passes through the expansion device; it is throttled to low pressure & temperature & sent to heat absorption device where it boils. A drier filter is in the way to throttling device. Separate pressure gauges are provided to measure heat absorption device & heat rejection device Pressures at various locations. Energy meter is provided to measure energy consumed by compressor. Rotameter in the liquid line is incorporated to measure the refrigerant flow. Digital temperature indicator displays temperatures at various locations as per the selection viz. temperature before & after compressor and before & after expansion.

LIST OF EXPERIEMNTS: To evaluate the COP of the system of heating & cooling cycle.To calculate CARNOT COP.To plot the actual Refrigeration Cycle on P-H chart.To study various components and controls used in heat pump.

The J.P.T.I. unit consists of two thin wall concentric copper spheres. The inner sphere houses the heating coil. Heating coil is made up of nichrome wire wound on mica sheet. The insulating powder packed between two shells. Power supply to the heater is given through a dimmerstat & is measured by voltmeter & an ammeter. Temperature can be measured with the help of thermocouples. Four thermocouple are embedded on inner sphere and six thermocouples are embedded on outer sphere. The entire ten temperature indicator, these reading enable of insulating powder.

SPECIFICATION:-Radius of the inner copper sphere - ri - 50mmRadius of the outer copper sphere - ro - 100 mmVoltmeter - 0 - 300 V Ammeter - 0 - 5 ADimmerstat - 1000 wattHeater - Mica Type.Temperature indicator - 0 - 300 0CThermocouple - No. 1 to 4 on inner sphere to measure TiThermocouple - No. 5 to 10 on outer sphere to measure T0Insulating powder Asbestos magnesia commercially available powder andPacked between the two spheres.

FEATURES:-Thermal conductivity of insulating powder can be calculated.Wide range of experiments can be performed to find value over a range of temperatures.Ideal for group studies & demonstration.Panelised instruments mounted on a control panel.Easy to operate.Useful for institutions, research laboratories & insulating powder manufactures

EXPERIMENTS:-To find out the thermal conductivity of the Insulating powder packed between the two spheres.

SERVICE REQUIRED:-15 amps, Single Phase A. C. supply with earthing connection.Suitable bench area to mount the instrument.