The apparatus
consists of a storage water tank, embraced by evaporator coil of the cooling
unit, cooling cycle comprises of a hermetically sealed compressor, air-cooled
condenser, a capillary tube as expansion device and an evaporator cell. The
stainless steel water tank is provided with insulation on air sides and a door
are provided at the top. Cold water can be taken out from a top provided and
inlet water supply is controlled by a bail-operated top. Various measurements
provided enable students to determine the theoretical and actual cop, power
consumption, actual cooling capacity refrigerant flow and compressor volumetric
efficiency of compressor.
Specifications
Cooling cycle
a) compressor hermetically sealed type,
having the capacity of 1/3 ton of refrigeration using r-12 refrigerant.
b) finned tube type air colled condenser with
forced air flow.
c) filter cum drier for refrigerant.
d) capacity expansion device.
e) evaporator coil embraced on stainless
steel water tank, provided with glass wool insulation.
2.water drain
tap and float operated inlet water tap are provided for water tank with
insulated lift door at top.
3.measurement
a) pressure gauges for evaporating and
condensing pressure.
b) thermometers to measure refrigerant
temperatures at inlet and out let of condenser and evaporator.
c) dial type thermometer for water
temperature.
d) rotameter to measure liquid refrigerant
flow.
e) energymeter to measure compressor input.
4.safely &
controls –
a) thermostat to put off compressor at set
water temperature.
b) pressostat to put off compressor if high
or low pressure goes out of set limit.
c) over load protector for compressor,
A technical manual will be supplied along – with the unit. Also, the unit is provided with an attractive and anti corrosion powder costing.
Utilities required other than above supply:
1.floor space
of 1.5 m. X 1.5 m.
2.water supply of 5 lit/min, 3.230 v, 15a ac stabilized supply with earthing connection
