Question 2 - Section B: R134a is used as the refrigerant in a vapour compression refrigeration system. The compression process is assumed to be isentropic and the throttling process is assumed to be isenthalpic. Mass flow rate of the refrigerant within the cycle is 0.65 kg/s. The evaporator operates at 200 kPa and the condenser operates at 900 kPa. The cycle operates with 25 K of sub-cooling in the condenser and 30 K superheating in the evaporator. Determine: (v) the cooling load of this refrigeration cycle. (vi) the co-efficient of performance of refrigeration for this refrigeration cycle. (vii) the maximum temperature within the cycle. (viii) the power output available in Watts, if this refrigeration cycle is used as a heat pump.
Question 2 - Section B: R134a is used as the refrigerant in a vapour compression refrigeration system. The compression process is assumed to be isentropic and the throttling process is assumed to be isenthalpic. Mass flow rate of the refrigerant within the cycle is 0.65 kg/s. The evaporator operates at 200 kPa and the condenser operates at 900 kPa. The cycle operates with 25 K of sub-cooling in the condenser and 30 K superheating in the evaporator. Determine: (v) the cooling load of this refrigeration cycle. (vi) the co-efficient of performance of refrigeration for this refrigeration cycle. (vii) the maximum temperature within the cycle. (viii) the power output available in Watts, if this refrigeration cycle is used as a heat pump.
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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Transcribed Image Text:Question 2 - Section B:
R134a is used as the refrigerant in a vapour compression refrigeration system. The compression
process is assumed to be isentropic and the throttling process is assumed to be isenthalpic. Mass
flow rate of the refrigerant within the cycle is 0.65 kg/s. The evaporator operates at 200 kPa and
the condenser operates at 900 kPa. The cycle operates with 25 K of sub-cooling in the condenser
and 30 K superheating in the evaporator.
Determine:
(v) the cooling load of this refrigeration cycle.
(vi) the co-efficient of performance of refrigeration for this refrigeration cycle.
(vii) the maximum temperature within the cycle.
(viii) the power output available in Watts, if this refrigeration cycle is used as a heat pump.
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