Refrigeration Test Rig

Description:

The REFRIGERATION test rig works on simple vapour compression refrigeration cycle and uses R134a as a refrigerant. It is environment friendly. The system is fabricated such that students can observe and study vapour compression cycle, its component principle & working. The arrangement of parts such that, all the parts are visible and working can be easily understood.

Technical Specifications:

SUB-TITLE	PARAMETER		DESCRIPTION
	MODEL		NAERF-01E
REFRIGERATION SYSTEM	Cooling Capacity		450 Watts at rated test conditions* ( 1/8 TR )
	Compressor		1/4 HP; Hermetically sealed. Make: Emerson Climate Technologies Ltd. /or Danfoss Ltd;/or Tecumseh Products India Ltd./ or any equivalent make.
	Condenser		Forced convection air cooled.
	Condenser fan		Axial flow type.
	Drier/ filter		Molecular sieve type.
	Expansion device		Capillary tube
	Evaporator		Direct expansion type. Shell & Coil type provided
	Accumulator		Copper / M.S. shell suction line accumulator provided.
	Refrigerant		R-134 a.
CONTROLS & INDICATIONS	HP / LP Cut-out		Alco/ Danfoss / Castle or equivalent make.
	Pressure indication		2 nos. dial type pressure gauges; one for suction and the other for discharge pressure.
	Temperature indication		Multi-channel LED digital temperature indicator.
	Refrigerant flow indication		Glass tube rotameter.
ELECTRICAL SYSTEM		Supply	220-240 Volts, 50 Hz, 1 phase.
		Input power	1.0 kW.
		Rated current	4.5 Amps.
		Operating switches	Main switch & piano type switches for compressor & heater
		Indicating lamps	Provided for compressor.
		Energy-meters	Provided for compressor.
CONSTRUCTION		Material	Panel : 1.2 mm thick CRCA
		Outer finish	Powder coating
		Calorimeter	Stainless steel: SS-304 tank with nitrile foam insulation.
		Size	900 x 600 x 1130 mm (L x B x H)

List of Experiments:

1. TO STUDY VARIOUS COMPONENTS AND CONTROLS USED IN VAPOUR COMPRESSION CYCLE.
2.To evaluate the tonnage capacity of the air conditioning system by enthalpy difference method.
3. TO EVALUATE ACTUAL & THEORETICAL C.O.P. OF VAPOUR COMPRESSION CYCLE.
4. TO PLOT ACTUAL REFRIGERATION CYCLE ON P-H CHART.

Rating conditions * : Ambient temperature = 350 C, atmospheric pressure = 1.01 bar, suction pressure = 35 psig, discharge pressure = 180 psig, evaporation temperature = 7.70 C, discharge temperature = 550 C.

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AIR CONDITIONING TEST RIG

Description:

The A.C. test rig works on simple vapour compression refrigeration
cycle using R 134 a as a refrigerant.
The system is fabricated such that student can study all the air conditioning
processes. It is also useful to understand working of all the components of system, their performance and control etc.
All the components are mounted on the display board, so that students can observe their working easily.

Technical Specifications:

SUB-TITLE	PARAMETER		DESCRIPTION
	MODEL		NAEAC-01E
REFRIGERATION SYSTEM	Capacity		0.30 TR @Rated test conditions
	Compressor		Hermetically sealed. Make :Emerson Climate Tech./ Tecumseh Products India Ltd./ Danfoss Ltd./or any equivalent make.
	Condenser		Forced convection air cooled.
	Condenser fan		Axial flow.
	Drier/ filter		Provided.
	Expansion device		Capillary Tube.
	Evaporator		Forced convection air cooled.
	Evaporator Fan		Axial Flow Type
	Dehumidifier or Reheater		1000 Watts; Finned Type.
	Humidifier		Provided
	Refrigerant		R-134 a.
CONTROLS & INDICATIONS	HP / LP Cut-out		Alco/ or Danfoss / Castle or equivalent make.
	Temperature		6 Channel facility with digital display.
	Pressure		2 Nos.; Dial type pressure gauges.
	Refrigerant Flow		Glass tube Rotameter provided.
	Air temperature		DBT & WBT measurement by sling psychrometer.
	Air flow measurement		By inclined tube manometer.
ELECTRICAL SYSTEM		Supply	220-240 Volts, 50 Hz, 1 phase.
		Input power	1.2 kW.
		Rated current	5.5 Amps.
		Indicating lamps	Provided for compressor and heater.
		Energy-meters	Range 0-20 A; provided for Compressor
CONSTRUCTION		Material	Panel: 1.2 mm thick CRCA
		Outer finish	Powder coating
		Size	900 x 600 x 1480 (L x B x H)

List of Experiments:

To evaluate the tonnage capacity of the air conditioning system by enthalpy difference method.

To evaluate actual and theoretical C.O.P. of the system.
To plot the refrigeration cycle on P-H & T-S charts.
To plot the psychrometric processes on psychrometric charts.

Rating conditions * : Ambient temperature= 350 C, atmospheric pressure = 1.01 bar, suction pressure = 70 psig, discharge pressure = 300 psig, evaporation temperature = 7.70 C, discharge temperature = 550 C.

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WATER COOLER TEST RIG

Description:

‘THE WATER COOLER’ Test Rig enables students to study and understand Vapour Compression Cycle, its components, principle and working. All the components are mounted on rigid steel frame. The trainer consists of a hermetically sealed compressor, forced convection air-cooled condenser, filter / drier, flow meter, expansion device and coil wound type evaporator. Separate pressure gauges are provided to record suction and discharge pressures and digital temperature indicators for various temperatures.
The refrigerant used is R-134 a which is environment friendly.

Technical Specifications:

SUB-TITLE	PARAMETER		DESCRIPTION
	MODEL		NAEAC-01E
REFRIGERATION SYSTEM	Capacity		0.30 TR @Rated test conditions
	Compressor		Hermetically sealed. Make :Emerson Climate Tech./ Tecumseh Products India Ltd./ Danfoss Ltd./or any equivalent make.
	Condenser		Forced convection air cooled.
	Condenser fan		Axial flow.
	Evaporator		Provided.
	Expansion device		Capillary Tube.
	Accumulator		Forced convection air cooled.
	Insulation		Axial Flow Type
	Refrigerant		1000 Watts; Finned Type.
CONTROLS & INDICATIONS			Provided
	Temperature		R-134 a.
		Pressure	Alco/ or Danfoss / Castle or equivalent make.
ELECTRICAL SYSTEM		Supply	6 Channel facility with digital display.
		Input power	2 Nos.; Dial type pressure gauges.
		Rated current	Glass tube Rotameter provided.
		Energy-meters	DBT & WBT measurement by sling psychrometer.
CONSTRUCTION		Water Tank	By inclined tube manometer.
		Outer body	220-240 Volts, 50 Hz, 1 phase.
		Size	1.2 kW.

List of Experiments:

To study various components and controls used in Vapour Compression Cycle.
To evaluate the cooling capacity of water cooler.
To evaluate actual and theoretical C.O.P. of Vapour Compression Cycle.
To plot the actual Refrigeration Cycle on P-H and T-S charts.


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