Refrigeration Laboratory Equipment


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RAC-17 A

INTRODUCTION

This Equipment consists of close circuit duct in which air is circulated by an axial flow fan. An arrangement has been provided for controlling
the volumes of intake fresh air and air to be recirculated. Duct is fitted with heater before and after the cooling coil, which is operated by a
refrigeration cycle. A steam generator is provided to demonstrate the operation of humidification.
The duct is provided with perspex acrylic cover.
Total set up is mounted on a trolley with caster wheels.

FEATURES

This model has designed to study the principles of recirculating air conditioning system. An arrangement has been provided for controlling the volumes of intake fresh air and air to be circulated.

RANGE OF EXPERIMENTS

1. Demonstration of heating, cooling, humidification and dehumidification for conditioning of air.
2. Demonstration of constant enthalpy mixing of two air streams.
3. Study of working of recirculating air conditioning.
4. To study compressor efficiency at varying functioning condition.

SPECIFICATIONS

BASIC DESIGN FEATURES :-
1. Compressor :- Hermetically sealed compressor having cooling capacity of(1-ton)Kirloskar or equivalent.
2. Evaporator :- Air cooled evaporator is provided in duct. Material copper. Fins material
m.s. This is tube type evaporator.
3. Condenser :- Air cooled condenser is provided. Material cooper fins material m.s. This is a Tube type condenser .FHP fan motor with fan blade is provided.
4. Expansion Device :-1) Thermostatic Expansion Valve ( danfoss / flica).
(Internal Equalizer type) make.

INSTRUMENTATION AND CONTROL

1. Rotameter :- For measuring flow rate of liquid refrigerant .Make :- Eureka of equivalent capacity 7.6 to 76 LPH.
2. Watt meter :- 4 nos. One each for power measurement of compressor and preheated/ reheated Condenser fan.
3. Heater control:- 230 V AC single phase thyrister drive for heater control.
4. Pressure gauges :- 0to 300 psi (R-12) 1 nos, 30” vacuum to 150 psi (R-12) 1 nos, make FIEBEG / WICA make or equivalent.
5. Digital temperature indicator with selector switch to measure temperature at various salient points of the refrigeration cycle.
6. Humidity Indicator :- Digital indicator are placed in the duct to measure the humidity in the duct
before and after the evaporator coil.
7. HP/LP cutout :- Ranco make or equivalent.
8. Service Valve :- 5 nos, brass type.
9. Filter/ Drier :- 1nos, danfoss or equivalent make.
10. Thermostat :- Ranco make of equivalent.
11. Sight glass :- Standard.
12.Centrifugal Blower :- Air is provided in the duct by centrifugal blower having butterfly valve to
very the air velocity. Calibrated with the velocity in the duct angular scales.
13. Steam Generator with electric heater and pressure gauge.
14. Analog o/p are available for following variable and can be used for computer interfacing.
A) Power B) temperature.
15. Foundation is not required for this equipment as it is light and compact.
16. Gas cylinder (R-12) of 2 kg capacity with charging tube 1 mtr. Length will also be supplied in
addition to the above.
17.Computer with interfacing unit for processing of data and analysis
PIV with 256 MB RAM / 40 GB HDD /15” Colour monitor, ADVANTECH ADC CARD with 16 i/p .USB / SERIAL PORT.

INSTRUCTION MANUAL

A technical Manual is supplied which gives details of the apparatus and procedure of experiments.

SERVICES REQUIRED

440 Volts / 15 Amp / Three phase / 50 Hz with proper earthing.

RAC-19

INTRODUCTION

“EEE” Split A/C Tutor has been designed to study the split air conditioner and its performance.
The unit will be mounted on a trolley made up of MS angles and instrumentation will be mounted on a M S
board duly powder coated. Casters will be provided to achieve the mobility of the unit.
“EEE” split air conditioning Cycle Demonstration Unit is designed to carryout following experiments
and study of air conditioning cycle in details for the students of Mechanical Engineering or Polytechnics.

RANGE OF EXPERIMENTS

1. To demonstrate the basic Vapour Compression Cycle of Refrigeration .
2. To study theoretical cycles and plotting of T- and P.H. charts .
3. To study the properties of refrigerant at salient points of the cycle .
4. To find out refrigerating effect and work input , hence , actual and theoretical C.O.P.
5. To study functioning of vapour compression cycle at various evaporator temperatures .
6. To study compressor efficiency at varying functioning condition. This equipment is fully instrumented to demonstrate ' Refrigeration System ' with basic components and necessary controls .

SPECIFICATION

1) Compressor Hermetic Kirloskar make, Model AJ 15,Capacity 3000 Kcal/HR
2) Condenser Air cooled suitable for above compressor with fan and motor
3) Evaporator Suitable air cooled type fitted in the duct.
4) Expansion device Thermostatic expansion valve Danfoss make or equivalent
5) Rotameter for flow measurement of liquid refrigerant. Eureka make.
6) Refrigerant R 22, charged and extra : 2 kg
7) Energy meter For power measurement of compressor , air heater and steamgenerator
8) Heater regulator suitable capacity
Pressure gauge Waree make, 2” dial, for HP and LP measurement. Digital Temp. Indicator For temp, measurement at various points.Range up to 300 C.
HPLP cutout For safety of compressor, Ranco or equivalent make. Orifice & manometer Inclined manometer and orifice plate for airflow measurement
Steam Generator For steam injection.
Axial Fan For forcing the air in the duct, 100 cfm Air heater 3 Nos, 0.5 KW capacity.
Dry - Wet bulb thermometer Zeal England mercury type for measurement of condition of air, 4 nos.
All equipment are suitably mounted on a painted sturdy angle frame and power coated panel.

INSTRUCTION MANUAL

A technical Manual is supplied which gives details of the apparatus and procedure of experiments.

SERVICES REQUIRED

A.C. 230 V single phase stabilised supply with earthing connection.
Space required : For complete arrangement of the apparatus of 1 mtr x 1 mtr approx. is required.

 


RAC-06   RAC-07
Refrigeration Laboratory Equipment Refrigeration Laboratory Equipment

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Refrigeration Laboratory Equipment

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