A plant using R-134a is used to chill water for warship systems. The condenser is also cooled by water. Assume no undercooling in the condenser. The following data is to be used: Water flowrate through evaporator Water inlet temperature to evaporator Water outlet temperature from evaporator -10°C 50L/s 20°℃ 140L/s 350kPa 1100kPa Water flowrate through condenser Compressor suction pressure Compressor discharge pressure Compressor suction temperature Compressor discharge temperature Specific heat capacity of water Calculate: -10°℃ 60°C 4.2kJ/kgK a. Coefficient of Performance b. refrigerant cooling load c. refrigerant mass flowrate d. compressor power e. heat removed in condenser f. temperature change in condenser cooling water

A plant using R-134a is used to chill water for warship systems. The condenser is also cooled by water. Assume no undercooling in the condenser. The following data is to be used: Water flowrate through evaporator Water inlet temperature to evaporator Water outlet temperature from evaporator -10°C 50L/s 20°℃ 140L/s 350kPa 1100kPa Water flowrate through condenser Compressor suction pressure Compressor discharge pressure Compressor suction temperature Compressor discharge temperature Specific heat capacity of water Calculate: -10°℃ 60°C 4.2kJ/kgK a. Coefficient of Performance b. refrigerant cooling load c. refrigerant mass flowrate d. compressor power e. heat removed in condenser f. temperature change in condenser cooling water

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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Question

13.
A plant using R-134a is used to chill water for warship systems. The
condenser is also cooled by water. Assume no undercooling in the
condenser. The following data is to be used:
50L/s
Water flowrate through evaporator
Water inlet temperature to evaporator
Water outlet temperature from evaporator -10°C
20°C
140L/s
350kPa
1100kPa
Water flowrate through condenser
Compressor suction pressure
Compressor discharge pressure
Compressor suction temperature
Compressor discharge temperature
Specific heat capacity of water
Calculate:
-10°℃
60°C
4.2kJ/kgK
a. Coefficient of Performance
b. refrigerant cooling load
c. refrigerant mass flowrate
d. compressor power
e. heat removed in condenser
f. temperature change in condenser cooling water

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