DOMESTIC REFRIGERATOR TUTOR

Description:
A domestic refrigerator is one of the simplest of refrigeration devices widely used all over the world. It uses a fractional HP hermetically sealed compressor, a natural convection condenser, a capillary tube as an expansion device, and direct expansion type roll-bond evaporator. As far as the controls are concerned, an ON-OFF type thermostat controls the average temperature of the refrigerator. The inside heat transfer takes place by natural convection and convective currents set due to density difference of cold and warm air.

Technical Specifications:

SUB-TITLE PARAMETER DESCRIPTION
MODEL
REFRIGERATION SYSTEM Refrigerator WHIRLPOOL/ VOLTAS/ GODREJ/ LG/SAMSUNG or equivalent make
Capacity 175 Litres
Compressor Hermetically sealed.
Freezer Ice Trays; Component Shelf; Freezer door rack
Heater for load Provided
Drier/ filter Provided; Molecular sieve type.
Expansion device Capillary Tube
Accumulator Copper / M.S. shell suction line accumulator provided.
Insulation Polyurethane Foam (PUF)
Refrigerant R-134a
CONTROLS & INDICATIONS Temperature Digital Indicator with selector
Pressure Pressure gauges 2 Nos. for suction and discharge
ELECTRICAL SYSTEM Supply 220-240 Volts, 50 Hz, 1 phase.
Input power 200 watts
Rated current 1.2 Amps
CONSTRUCTION
Inner body Plastic/ fibre
Size 565 x 520 x 1520 mm( L X D X H )

Specifications subject to change without any notification.

List Of Experiments:

  1. To study construction and working of a domestic refrigerator.
  2. To plot the cycle on P-H Chart.

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

 

Domestic Refrigerator Tutor