The Window AC test rig is designed and manufactured such that the students can understand construction and working of a window type air conditioner and conduct the trial on it to evaluate performance of the same.
The window AC is fixed in a rigid angle frame, with its cover cut half open to reveal the internal parts of the AC. The required pressure and temperature tapings are drawn for measurement of pressures and temperatures at salient points. Energy meter is provided for recording compressor energy consumption. A sling psychrometer is provided for measurement of inlet and outlet Dry-bulb & wet bulb temperature. With the help of manometer, velocity of air and consequently the flow rate of air can be determined.

Technical Specifications:

Refrigeration System Capacity 1.0 TR at rated test conditions*
Compressor Rotary type; Hermetically sealed.
Condenser Forced convection air cooled
Condenser fan Axial flow type.
Evaporator Forced convection
Evaporator fan Axial flow type.
Drier/ filter Molecular sieve type.
Expansion device Capillary Tube
Accumulator Copper / M.S. shell suction line accumulator provided.
Refrigerant R-22
INSTRUMENTATION Temperature Sling Psychrometer for air temperatures & Digital Indicator for refrigerant temperatures.
Velocity By inclined tube manometer
Pressure Pressure gauges at suction & discharge
ELECTRICAL SYSTEM Supply 220-240 Volts, 50 Hz, 1 phase.
Input power 1.2 kW
Rated current 6.0 Amps.
Energy-meter Provided for compressor
CONSTRUCTION Material Panel: 1.2 mm thick CRCA
Outer finish Powder coating
Size 650 x 600 x 1165 mm ( L X D X H )

Specifications subject to change without any notification.

List Of Experiments:

  1. To determine Tonnage capacity of the Window type Air Conditioner by enthalpy difference method.
  2. To determine actual C. O. P & theoretical C. O. P of the cycle.
  3. To plot operating cycle on P-H chart.

Rating conditions * : Ambient temperature= 35o C, atmospheric pressure = 1.01 bar, suction pressure=70 psig, discharge pressure= 300 psig, evaporation temperature=7.7o C, discharge temperature=55o C


Window AC Test Rig