An ammonia ice plant produces ice from water at 30°C to ice at -5°C. It works on standard vapour compression cycle, dry saturatedconditions at compressor inlet. The enthalpies at compressor inlet and condenser exit are 1443.9 kJ/kg and 366.1 kJ/kg. Mass flow rate ofthe refrigerant is 180 kg/h. The ice produced is. tons per day. Specific heat of water = 4.186 kJ/kgK; Specific heat of ice = 1.94kJ/kgk Latent heat of water at 0°C = 335 kJ/kgK

given:h1=1443.9kj/kgh3=366.9kj/kgspecific heat of water =4.186kj/kgkspecific heat of ice =1.94kj/kgk

Answered: works on standard vapor condenser exit…

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works on standard vapor condenser exit are 1443.9

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter28: Special Refrigeration Applications

Section: Chapter Questions

Problem 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?

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An ammonia ice plant produces ice from water at 30°C to ice at -5°C. It works on standard vapour compression cycle, dry saturated
conditions at compressor inlet. The enthalpies at compressor inlet and condenser exit are 1443.9 kJ/kg and 366.1 kJ/kg. Mass flow rate of
the refrigerant is 180 kg/h. The ice produced is. tons per day. Specific heat of water = 4.186 kJ/kgK; Specific heat of ice = 1.94
kJ/kgk Latent heat of water at 0°C = 335 kJ/kgK

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