The presentation deals with the basic of refrigeration system.

1. REFRIGERATION
BY-ARSHAD HABIB KHAN

2. WHAT IS REFRIGERATION?
High Temperature Body
(SINK)
Heat Rejected
R Work Input
Heat Extracted
Low Temperature Body
(SOURCE)

3. TYPES OF REFRIGERATION CYCLE
• Vapour Compression Refrigeration Cycle(VCRS)
• Vapour Absorption Refrigeration Cycle(VARS)

4. VAPOR COMPRESSION
REFRIGERATION SYSTEM
Circulate refrigerant
Absorb the heat from space to be refrigerate
Rejects that heat to the cooling medium
Refrigerant used are: Ammonia, methyl chloride, air,
CO2, SO2
Condenser
Evaporator
High
Pressure
Side
Low
Pressure
Side
Compressor
Expansion
Device
1 2
3
4

5. COMPONENT OF VCRS
• Compressor
• Condenser
• Expansion Valve (throttle valve)
• Evaporator

6. According to the
location of the prime
mover
Hermetical Sealed
Compressor
Semi- Hermetical
Sealed Compressor
Hermetically Sealed Compressor

7. COMPONENT OF VCRS
• Compressor
• Condenser
• Expansion Valve (throttle valve)
• Evaporator

8. TYPES OF
CONDENSERS
Air cooled condensers
Water cooled condensers
Evaporative condensers

9. COMPONENT OF VCRS
• Compressor
• Condenser
• Expansion Valve (throttle valve)
• Evaporator

10. TYPES OF
EXPANSION
VALVE
• Capillary tube
• Hand-operated
• Constant pressure
• Thermostatic
• Low side float valve
• High side float valve

11. COMPONENT OF VCRS
• Compressor
• Condenser
• Expansion Valve (throttle valve)
• Evaporator

12. TYPES OF
EVAPORATOR
• Bare tube coil evaporator
• Finned tube evaporator
• Plate type evaporator
• Shell and tube
evaporator
• Shell and coil evaporator
• Tube in tube evaporator

13. VAPOUR COMPRESSION
REFRIGERATION CYCLE

15. APPLICATION OF VCRS
• Domestic Refrigerator,
• Water coolers,
• Ice Plants,
• Air Conditioner.