JEMS INDUSTRIES

Chinchwad, Pune, Maharashtra

ESCRIPTION:

The REFRIGERATION test rig works on simple vapour compression refrigeration cycle and uses R134a as a refrigerant. It is environment friendly. The system is fabricated such that students can observe and study vapour compression cycle, its component principle & working. The arrangement of parts such that, all the parts are visible and working can be easily understood.

The heat pump test rig is a self contained unit. All the components are mounted such that its operation and working can be easily understood. The required controls for temperature, pressure, and overload are provided.It uses a hermetically sealed compressor, heat rejection chamber, heat absorption chamber, and apparatus to measure the heat gain and heat loss.

Specifications subject to change without any notification.

List Of Experiments:

1. TO EVALUATE GROSS HEAT REJCECTION OF THE HEAT PUMP.
2. TO CALCULATE ACTUAL & THEERORETICAL C.O.P. OF THE SYSTEM.
3. TO PLOT SYSTEM PERFORMANCE ON P-H CHART.

Rating conditions * : Ambient temperature= 35^o C, atmospheric pressure = 1.01 bar, suction pressure= 35 psig, discharge pressure= 180 psig, evaporation temperature=7.7^o C, discharge temperature=55^o C.

Description:The Vortex Tube is one of the non- conventional methods of cooling which has no moving parts. It requires only source of compressed air. Through this tube, when air is admitted at high pressure, from one end, hot sir is discharged and from the other end, cold air comes out. The test rig is designed such that all the performance can be evaluated.

Specifications subject to change without any notification.

LIST OF EXPERIMENTS:

1. To understand the principle of working Vortex Tube.
2. To evaluate Adiabatic Efficiency of the system.
3. To evaluate C.O.P. of the system.
4. To find out Refrigeration Effect per kg of air supplied.

1. Test rig consists of a battery of 12.5mm pipes of stainless steel, aluminium and copper of length over 100 times the diameter with pressure tappings at either ends to measure the losses due to pipe friction - major losses. To measure the minor losses, a 15mm(1/2") GI pipe is fitted with a bend, an elbow, a sudden enlargement and a sudden contraction. Suitable flow control valves are provided in all the pipe lines.
2. Each test pipe and pipe fitting is provided with pressure tappings to measure the pressure loss. A differential manometer (without mercury) is provided to measure this pressure loss. The pressure tappings are connected separately to a manifold which in turn is connected to the manometer for easy change over. A strong iron stand is provided for supporting the pipe lines. A stop watch and an M.S. collecting tank of size 90 liters. with a gauge glass scale fitting, a drain valve and a bend are provided to measure the actual flow rate.
3. A 220 volt AC, 0.5 HP, single phase monoblock ISI pumpset with suitable pipe fittings, strainer foot valve, and switch is provided to supply water to the test rig.
4. A sump tank of size 200 liters with suitable drain is provided to store the water. A strong iron stand fitted with wheels supports the complete test rig. The unit is moveable. All tanks are provided with FRP lining for total rust protection

1. Test rig consists of a Francis water turbine designed for laboratory experimental purpose and to conduct test in metric units. The specifications of the turbine are as follows:-Normal Speed - 2200 RPM.Capacity - 1.0 KWThe unit consists of a cast iron casing, a rotor assembly of shaft, gunmetal runner and a brake drum all mounted on a suitable sturdy base. Guide vanes are provided in the turbine to regulate the flow into the runner. A conical draught tube is connected to the turbine outlet by a bend. A rope brake arrangement with a spring balance is provided for loading the turbine. Pressure gauge and vacuum gauge are fixed at the inlet and outlet to measure the net supply head to the turbine.
2. Water to the turbine is provided by a centrifugal pump set of 5 HP capacity. The pump operates on 440Volts, 3 Phase, 50 Hz line.
3. Other standard accessories include a DOL starter, switch, flow control valve, suitable piping.
4. Flow measuring unit consists of a venturimeter with pressure taps connected to two pressure gauges mounted on a panel board.
5. The complete test rig is mounted on a storage tank of 500 liters capacity. The tank is provided with FRP lining for total rust protection