Water to Water Heat Pump Test Rig
Heat Pump and the refrigerating machine basically work on one and the same principle and with the same components. Heat pump is a machine, which delivers heat at a temperature suitable for domestic, Industrial and Commercial purposes. By added work input from the motor or engine it extracts heat from low-grade source. In many circumstances heat pumps can make valuable contribution to energy conservation. The majority of heat pumps operate on the vapor compression cycle using a refrigerant as the working fluid. Heat pump is fully sealed R-134A refrigerant system using water to water pumping principle. The equipment produces realistic results and has low thermal inertia so that unit stabilizes very quickly and enables student's maximum experimentation.
Technical Specification :-
1.Compressor – Hermetically sealed compressor using R-12 refrigerant, having capacity 0.3 tons of refrigeration. Condensing pressure – max. 15 Kg/cm2 (Actual pressures will depend upon working conditions).
2.Condenser – Shell and coil type with continuous water flow arrangement.
3.Evaporator – Shell and coil type with continuous water flow arrangement.
4.Expansion Valve – Internally equalized thermostatic expansion valve.
5.Measurements –
a) Rotameter for condenser & evaporator water flow rate measurement.
b) Rotameter for liquid refrigerant flow measurement.
c) Pressure gauges for condensing and evaporating pressure – 2 Nos.
d) Thermometer for refrigeration cycle & water temp, measurement – 7
e) Wattmeter for compressor input measurement.
f) Ammeter for compressor current measurement.
6.Controls –
a) HP/LP cutout for compressor.
b) Overload protector for compressor.
c) Gate valve to control water flow rates.
d) Necessary switches and fuse.
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