This document discusses refrigeration and the vapor compression refrigeration cycle. It describes that refrigeration involves extracting heat from a low temperature body and rejecting it to a high temperature sink. It then explains the two main types of refrigeration cycles as vapor compression and vapor absorption. It provides details on the components and working of a vapor compression refrigeration system, including the compressor, condenser, expansion valve, and evaporator. It also discusses different types of each component. In summary, the document provides an overview of refrigeration and the vapor compression refrigeration cycle.

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.