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Consider a two-stage cascade refrigeration system operating between 0.1MPa and 1MPa. Each stage operates on the ideal cycle with R-134a as the working fluid. Heat rejection from the lower to the upper cycle occurs at 0.4MPa. If the mass flow rate in the upper cycle is 0.1 kg/s, Determine: (a) the mass flow rate through the lower cycle and (b)the COP.

Consider a two-stage cascade refrigeration system operating between 0.1MPa and 1MPa. Each stage operates on the ideal cycle with R-134a as the working fluid. Heat rejection from the lower to the upper cycle occurs at 0.4MPa. If the mass flow rate in the upper cycle is 0.1 kg/s, Determine: (a) the mass flow rate through the lower cycle and (b)the COP.

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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Consider a two-stage cascade refrigeration system operating between 0.1MPa and 1MPa. Each stage operates on the ideal cycle with R-134a as the working fluid. Heat rejection from the lower to the upper cycle occurs at 0.4MPa. If the mass flow rate in the upper cycle is 0.1 kg/s, Determine:

(a) the mass flow rate through the lower cycle and

(b)the COP.

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