Mechanical Heat Pump Apparatus .
Mechanical Heat Pump Apparatus for Science Lab Equipment Laboratory Instruments Manufacturers, Engineering Lab Equipments Manufacturers
The components of the heat pump and its instrumentation are mounted on a high quality ABS plastic panel.
The Mechanical Heat Pump consists of a hermetic compressor, an insulated coiled concentric tube water cooled condenser, a liquid receiver, a thermostatically controlled expansion valve and air heated evaporator.
Mechanical Heat Pump components are clearly but compactly arranged in a manner similar to that used for many domestic air-water heat pumps and all are visible from the front of the unit.
The operating cycle is as follows:
Slightly superheated Refrigerant vapour enters the compressor from the evaporator and its pressure is increased. This brings about a rise in temperature and the hot vapour enters the water cooled condenser. Mechanical Heat Pump is given up to the cooling water and the refrigerant condenses to a liquid before passing to the liquid receiver and then the expansion valve.
Experimental Capabilities of Mechanical Heat Pump Apparatus:
Determination of power input, heat output and coefficient of performance.
Production of heat pump performance curves over a range of source and delivery temperatures.
Plotting the vapour compression cycle on a p-h diagram and comparing this with the ideal cycle.
Determination of energy balances for condenser and compressor.
Production of heat pump performance curves based on properties, at a variety of evaporating and condensing temperatures.
Estimation of the effects of compressor pressure ratio on volumetric efficiency.
Specification of Mechanical Heat Pump Apparatus
A fully instrumented bench top air to water heat pump operating on the mechanical vapour compression cycle with Panel: High quality ABS plastic panel on which the following components are mounted.
Refrigerant
Compressor: Fully hermetic single cylinder reciprocating type. Displacement 8.85 cm3 rev-1
Condenser: Refrigerant to water. Insulated coiled concentric copper tube type.
Liquid Receiver: With valves. Contains entire refrigerant charge if required.
Evaporator: Air to refrigerant. Serpentine copper tube with aluminium fins and with integral fan.
Digital Thermometer: Resolution 0.1ºC, with switch to select from six thermocouples.
Flow Meters: Variable area type – to indicate flow rates.
Pressure Gauges: To indicate pressures in evaporator and condenser.
Electrical Energy Meter: Watt-hour type recording electrical input to the compressor