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HOT COLD HOT COLD

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The Ideal Vapor-Compression Refrigeration Cycle 1-2 Isentropic compression in a compressor 2-3 Constant-pressure heat rejection in a condenser 3-4 Throttling in an expansion device 4-1 Constant-pressure heat absorption in an evaporator h-constant s-constant P-constant

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Actual Vapor-Compression Refrigeration Cycle

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1. Effect of Sub-cooling the Refrigerant Improving the efficiency

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2. Effect of Superheating the Refrigerant

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3. Cascade Refrigeration Systems

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4. Multistage Compression Refrigeration Systems

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Air Refrigeration cycle

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1.

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State 1: Saturated Vapor State 2: State 3: Saturated Liquid State 4:

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Rate of Heat Removal Rate of Heat Rejection Coefficient of Performance ANS.

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2.

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State 1: Saturated Vapor State 2: Superheated State 3: Saturated Liquid State 4:

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State 5: Saturated Vapor State 6: State 7: Saturated Liquid State 8: Superheated

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ANS

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3.

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4.