Answer isn't I.54 mr-pant questan arIS SUyoupart.A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°C byrejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.35 kg/s and leaves at 26°C. Therefrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. The compressorconsumes 3.3 kW of power. Use data from the tables.26°C1.2 MPa5°C subcooledExpansionvalveCondenserEvaporatorOLWater18°C1.2 MPa50°CCompressorDetermine the COP of the refrigerator.The COP of the refrigerator is(You must provide an answer before moving to the next part.)

Answered: A commercial refrigerator with…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Answer isn't I.54

mr-pant quest
an ar
IS SU
you
part.
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°C by
rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.35 kg/s and leaves at 26°C. The
refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. The compressor
consumes 3.3 kW of power. Use data from the tables.
26°C
1.2 MPa
5°C subcooled
Expansion
valve
Condenser
Evaporator
OL
Water
18°C
1.2 MPa
50°C
Compressor
Determine the COP of the refrigerator.
The COP of the refrigerator is
(You must provide an answer before moving to the next part.)

Expert Solution

Step 1

$Given : Refrigerant = R 134 a Evaporator temperature, T_{e} = - 35^{o} C Water inlet temperature, T_{w, i} = 18^{o} C Water outlet temperature, T_{w, o} = 26^{o} C Mass flow rate of water, {\dot{m}}_{w} = 0.35 kg / s Condenser inlet condition, P_{2} = 1.2 MPa and T_{2} = 50^{o} C Refrigerant subcooled by, ∆ T_{subcool} = 5^{o} C Compressor power, {\dot{W}}_{c} = 3.3 kW Find : The COP of the refrigerator .$

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