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Q3. Consider a refrigerator operating on an ideal vapour-compression refrigeration cycle between pressures of 0.8435 and 8.8672 bar and using R134a as the working fluid. Pressure drops in the evaporator and condenser may be neglected. (a) . Sketch the cycle on the T-s diagram. Sketch the cycle on the p-h diagram including labels for the components on the diagram, heat and work transfers, as well as the pressure values given above. Name three assumptions made about the compression process in an ideal vapour compression refrigeration cycle.

Q3. Consider a refrigerator operating on an ideal vapour-compression refrigeration cycle between pressures of 0.8435 and 8.8672 bar and using R134a as the working fluid. Pressure drops in the evaporator and condenser may be neglected. (a) . Sketch the cycle on the T-s diagram. Sketch the cycle on the p-h diagram including labels for the components on the diagram, heat and work transfers, as well as the pressure values given above. Name three assumptions made about the compression process in an ideal vapour compression refrigeration cycle.

Elements Of Electromagnetics
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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Q3. Consider a refrigerator operating on an ideal vapour-compression refrigeration cycle between pressures of 0.8435 and 8.8672 bar and using R134a as the working fluid. Pressure drops in the evaporator and condenser may be neglected. (a) . Sketch the cycle on the T-s diagram. ii. Sketch the cycle on the p-h diagram including labels for the components on the diagram, heat and work transfers, as well as the pressure values given above. i. Name three assumptions made about the compression process in an ideal vapour compression refrigeration cycle. (b) i Determine the specific enthalpy before and after the evaporator (kl/kg). i. Determine the refrigerant duty (Q.) if the mass flow rate of the refrigerant is 15.3 x 10 kg/s. i. Determine the specific enthalpy after the compressor (kl/kg). iv. Determine the compressor power and the coefficient of performance.
Transcribed Image Text:Q3. Consider a refrigerator operating on an ideal vapour-compression refrigeration cycle between pressures of 0.8435 and 8.8672 bar and using R134a as the working fluid. Pressure drops in the evaporator and condenser may be neglected. (a) . Sketch the cycle on the T-s diagram. ii. Sketch the cycle on the p-h diagram including labels for the components on the diagram, heat and work transfers, as well as the pressure values given above. i. Name three assumptions made about the compression process in an ideal vapour compression refrigeration cycle. (b) i Determine the specific enthalpy before and after the evaporator (kl/kg). i. Determine the refrigerant duty (Q.) if the mass flow rate of the refrigerant is 15.3 x 10 kg/s. i. Determine the specific enthalpy after the compressor (kl/kg). iv. Determine the compressor power and the coefficient of performance.
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