New Anucool Engineers

Gokul Shirgaon, Kolhapur, Maharashtra

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 body
• Multistage Application
• High performance
• Energy efficient
• Effective Cooling
• High Durability
• Low maintenance

The electrical electronic components used in control panels of different applications dissipate heat continuously. Also these panels are operating round-o-clock and round the year at any location. The life of electronic components reduces drastically if exposed to high temperatures for long period. Normally, a temperature of 27 Deg. Celsius with 45-50% relative humidity is considered ideal for maximum life of switches and other components. Hence reliable air-conditioning is required to remove the heat for sustained functioning of these panels.

We have vast experience of 15 years to Design & Manufacture all the Educational Products in Mechanical Refrigeration. Over this period, our products have received wide spread acceptance in the market, owing to their high reliability, ruggedness, performance & quality. We assure consistent results throughout its lifecycle. We uniquely use environment friendly non ODS refrigerants approved under MONTREAL PROTOCOL.

We manufacture Vapor Absorption Refrigerator with advanced working and easy operational features. These are self contained Refrigerators working on absorption technology. In the absence of a compressor or pump, the circulation takes place by density difference. The Vapor Absorption Refrigerator absorbs the vapor emitted in the industries and laboratories, and prevents the heating of the place.

Attributes

• Consumes less electricity
• Does effective cooling
• Long service life
• Low maintenance

How It Operates?

• The system is pre-charged with three fluids namely water, ammonia and hydrogen. Hydrogen is used as an inert gas and does not undergo any phase change and heat transfer processes. Its purpose is to keep the pressure of the system constant
• It uses an electrically operated generator, where, the ammonia vapors dissolved in water are separated and pure ammonia vapors enter the condenser
• In the condenser, the high pressure vapors reject its latent heat to the surroundings and get liquefied
• The liquid ammoniaexpands through expansion device where its pressure and temperature is reduced and cold low pressure vapor enters the evaporator where it absorbs heat from the space to be cooled and then vaporized ammonia absorbs in water
• This strong solution then enters the generator and the cycle repeats

List of Experiments

• To study construction and working of a vapour absorption refrigerator
• To evaluate performance of the refrigerator by calculating the C.O.P of the system

Principle of OperationElectrolux principle works on 3-fluid system. There is solution circulation pump. Total pressure is the same throughout the system. The third fluid remains mainly in the evaporator thus reducing partial pressure of refrigerant to enable it to evaporate at low pressure and hence low temperature. The schematic diagram of the Electrolux refrigerator working on NH₃-H₂O system with H₂ as the third fluid is shown in figure. Liquid NH₃ evaporates in the evaporator in the pressure of H₂. Hydrogen is chosen as it is non corrosive and insoluble in water. A thermosyphon bubble pump is used to lift the weak aqua from the generator to the separator. The discharge tube from the evaporator the generator is extended down below the liquid level in the generator. The bubbles rise and carry slugs of weak NH₃-H₂O solution into the separator. Two U-bends are provided as vapour- locks to prevent H₂ from getting into the high side or solution circuit. Partial pressure of H2 provides the pressure difference of NH₃ between the condenser and evaporator. Accordingly, we have:

• In condenser pure NH₃ vapour pressure = Total pressure
• In evaporator NH₃ vapour pressure = Total pressure - partial pressure H₂

For example, Consider the condenser temperature at 50 C and evaporator temperature as -15 CThe corresponding vapour pressures of NH₃ are :

• Condenser, Pk = 20.33bar
• Evaporator outlet Po2 = 2.6bar

The approximate pressures in various parts of the system, then will be as given in the table. It has been assumed that vapours leaving generator top are in equilibrium with entering rich solution at 40 C, at which temperature saturation pressure of NH₃ is 15.45bar. It has also been assumed that the temperature at evaporator inlet is -25 C at which temperature saturation pressure of NH₃ is 1.516 bar.

Technical Specifications

we hold prominence in the field of the manufacturing panel air conditioners that are tested for performance. These panel air conditioners are precisely designed with closed loops to prevent dust and fumes from entering inside. Use of environment friendly refrigerant makes them the demand of the present time. We make available panel air conditioners with various mounting choices. We offer air conditioners in side mounting, top mounting and stand alone type to suit any type of panel. features

• high quality crca / ss 304 powder coated body
• high performance
• closed loop design
• environmental friendly 134a refrigerant is used
• emerson or equivalent made compressors with high reliability
• microprocessor based digital two set point temperature indicator cum controller (tic)
• potential free alarm for high and low temperature alerts ( optional )
• high / low pressure cut-off switches
• lubrication free sealed ball bearing motors

suited for

• cnc machine tools
• textile machines
• food processing machinery
• telecom
• power generation
• chemical plants
• steel plants

pancol mounting arrangementthe choice of mounting depends obviously upon the space available for fitment on panel. We offer air conditioners in side mounting, top mounting and stand alone type to suit any type of panel.

• side mounted : control panels where there is an unrestricted flow of air from one end to other end this type is preferred, so as to ensure uniform cooling of panel. These panels are mounted either on the doors or sidewalls of control panels
• stand alone type : the use of side mounted or top mounted panels is not suitable in some cases like for cooling of partitioned panels, where this arrangement is preferred
• top mounted : this type is preferred when side mounting or stand-alone type is not suitable. This panel ac is mounted on roof of the control panel

advantages of pancol over standard room air conditioners

• high shf : for panels, due to no occupancy and no positive fresh air intake, the latent heat component is almost negligible, resulting in nearly unity sensible heat factor. Thus the dehumidified air quantity required will be much higher than that available in a room air conditioner of equivalent capacity
• bigger evaporator coil and evaporator fan : to remove the high sensible heat load effectively, both the evaporator fan and evaporator coil need to be substantially oversized compared to room air conditioners. This increases the first cost of panel air conditioners compared to room air conditioners
• high energy efficiency ratio : due to bigger evaporator coils, panel acs operate at much higher suction temperature (approx. 6 to 7oc than room acs) thus eer is improved. Generally energy saving due to panel acs is about 25%
• reliability : high priority is assigned during design and testing of panel acs to achieve a higher mtbf (mean time between failures)
• continuous duty operation : standard room acs is designed to run 8 to 10 hours a day whereas panel ac is designed for continuous duty operation round the clock, round the year

technical specificationsstandard modelsrefrigerantcooling capacityratedoverall size wxhxd mmweight in kgwattskcal/hrpower (w)current (a)voltage (v)pancol-250-s-axr 134a2002141501.4230370 x 540 x 18027pancol-500-s-axr 134a5004283502.5230300 x 525 x 27038pancol-600-s-cer 134a6005144402.5230310 x 810 x 26043pancol-1000-s-cer 134a10008575852.7230375 x 950 x 23049pancol-1000-s-ce-1r 134a10008575952.7230395 x 710 x 25563pancol-1500-s-cer 134a150012858754.7230480 x 982 x 30065pancol-2000-s-cer222000171212806.0230440 x 982 x 30070 note : design specifications and technical characteristics are subject to change without notice.

Our Water Cooler Test Rig enables students to study and understand Vapor Compression Cycle, its components, principle and working. These Water Cooler Test Rigs are designed with precision to make the process of testing student-friendly and easy.

Construction

• All the components are mounted on rigid steel frame
• The trainer consists of a hermetically sealed compressor, forced convection air-cooled condenser, filter / drier, flow meter, expansion device and coil wound type evaporator
• Separate pressure gauges are provided to record suction and discharge pressures and digital temperature indicators for various temperatures

Refrigerant used

• is R-134 A which is environment friendly.

List of Experiments

• To study various components and controls used in Vapour Compression Cycle
• To evaluate the cooling capacity of water cooler
• To evaluate actual and theoretical C.O.P. of Vapour Compression Cycle
• To plot the actual Refrigeration Cycle on P-H and T-S charts