49% 5 / 13 MENGHAM CITY UNIVERSITY FORIAL EXAMINATION Thermaandere System BIRMINGHAM CITY Uity SECTION B Answer any ONE

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49 5 13 Mengham City University Forial Examination Thermaandere System Birmingham City Uity Section B Answer Any One 1 (32.89 KiB) Viewed 107 times

49% 5 / 13 MENGHAM CITY UNIVERSITY FORIAL EXAMINATION Thermaandere System BIRMINGHAM CITY Uity SECTION B Answer any ONE son from this section 11. A heat pump working on the ideal vapour compression cydreas the supply air to a big The heat is supplied from a nearby river at TC. The air is supplied at into the building 1013 bar and 32 C at a rate of 0.5 ms. This is hosted at constant prossure from 10-C when it passes through the condenter of the heat pump. The refrigerant used is R134a which is dry saturated when leaving the evaporator. There is no unor cooling in the condense. A temperature dorence of 17K is required to facilitate the heat transfer from the river to the refrigerant in the vortor. The delivery pressure of the compressor is 11 545 Dr. Given R-287 Jika andG1005 ok, determine the [10 ml 15 mars a) mass flowrate of the refrigerant b) work generated by the compressor c power required to drive the compressor the mechanical officiency is 87% 15 marks d) COP 15 marks Total Question 11 - 25 mars