Find the rate at which heat is extracted from the refrigerated space. A refrigerator operates between 120 kPa and 800 kPa inan ideal vapor compression cycle with R-134a as therefrigerant. The refrigerant enters the compressor assaturated vapor and leaves the condenser as saturatedliquid. The mass flow rate of the refrigerant is 0.2 kg/s.Properties for R-134a are as follows:Saturated R-134aP(kPa) T( C) h;(kJ/kg) h,(kJ/kg) s;(kJ/kgK)$,(kJ/kgK)22.595.5237267.30.0930.3540.950.918120 -22.3280031.31Superheated R-134aP(KPa)T( C)h(kJ/kg)s(kJ/kgK)80040276.450.95

Given; A refrigerator operates between =120 KPa and 800 KPa- in an ideal vapor compression cycle…

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the rate at which heat is extracted from the refrigerated space.

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

Chapter22: Condensers

Section: Chapter Questions

Problem 7RQ: When a standard-efficiency air-cooled condenser is used, the condensing refrigerant will normally be...

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Question

Find the rate at which heat is extracted from the refrigerated space.

A refrigerator operates between 120 kPa and 800 kPa in
an ideal vapor compression cycle with R-134a as the
refrigerant. The refrigerant enters the compressor as
saturated vapor and leaves the condenser as saturated
liquid. The mass flow rate of the refrigerant is 0.2 kg/s.
Properties for R-134a are as follows:
Saturated R-134a
P(kPa) T( C) h;(kJ/kg) h,(kJ/kg) s;(kJ/kgK)
$,(kJ/kgK)
22.5
95.5
237
267.3
0.093
0.354
0.95
0.918
120 -22.32
800
31.31
Superheated R-134a
P(KPa)
T( C)
h(kJ/kg)
s(kJ/kgK)
800
40
276.45
0.95

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