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Q1. Consider a two-stage cascade refrigeration system operating between the pressure limits of 1.0 and 0.1 MPa. Each stage operates on the ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. Heat rejection from the lower cycle to the upper cycle takes place in an adiabatic counterflow heat exchanger where both streams enter at about 0.5 MPa. If the rate of heat removal from the refrigerated space is 10 kW, determine a) the sketch of T-s diagram, b) the mass flow rate of the refrigerant through the lower and upper cycle, c) the power input to the compressor,

Q1. Consider a two-stage cascade refrigeration system operating between the pressure limits of 1.0 and 0.1 MPa. Each stage operates on the ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. Heat rejection from the lower cycle to the upper cycle takes place in an adiabatic counterflow heat exchanger where both streams enter at about 0.5 MPa. If the rate of heat removal from the refrigerated space is 10 kW, determine a) the sketch of T-s diagram, b) the mass flow rate of the refrigerant through the lower and upper cycle, c) the power input to the compressor,

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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Q1. Consider a two-stage cascade refrigeration system operating between the pressure limits of 1.0 and 0.1 MPa. Each stage operates on the ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. Heat rejection from the lower cycle to the upper cycle takes place in an adiabatic counterflow heat exchanger where both streams enter at about 0.5 MPa. If the rate of heat removal from the refrigerated space is 10 kW, determine a) the sketch of T-s diagram, b) the mass flow rate of the refrigerant through the lower and upper cycle, c) the power input to the compressor, d) the coefficient of performance of this cascade refrigerator T-s Diagram Condenser Expansion valve Compressor Evaporator Heat Condenser Expansion valve Evaporator Compressor
Transcribed Image Text:Q1. Consider a two-stage cascade refrigeration system operating between the pressure limits of 1.0 and 0.1 MPa. Each stage operates on the ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid. Heat rejection from the lower cycle to the upper cycle takes place in an adiabatic counterflow heat exchanger where both streams enter at about 0.5 MPa. If the rate of heat removal from the refrigerated space is 10 kW, determine a) the sketch of T-s diagram, b) the mass flow rate of the refrigerant through the lower and upper cycle, c) the power input to the compressor, d) the coefficient of performance of this cascade refrigerator T-s Diagram Condenser Expansion valve Compressor Evaporator Heat Condenser Expansion valve Evaporator Compressor
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