|The following data refer to summer air conditioning of a building. If the return air from the room is mixed with the outside air before entry the (evaporator) cooling coil in the ratio of 4:1 by mass. Find (a) Room sensible heat factor, (b) Apparatus dew point of the cooling coil and B.P.F, (c) Fresh air mass flow rate, (d) Refrigeration load on the cooling coil. (e) If the refrigeration cycle uses R134a as a working fluid, the evaporator and condenser temperatures are 0 °c and 55 °c, respectively. The degree of superheating and subcooling are 15 °c and 15 °c . Compressor isentropic efficiency is 0.88 determine, condenser heat load, coefficient of performance, input power in kW.

|The following data refer to summer air conditioning of a building. If the return air from the room is mixed with the outside air before entry the (evaporator) cooling coil in the ratio of 4:1 by mass. Find (a) Room sensible heat factor, (b) Apparatus dew point of the cooling coil and B.P.F, (c) Fresh air mass flow rate, (d) Refrigeration load on the cooling coil. (e) If the refrigeration cycle uses R134a as a working fluid, the evaporator and condenser temperatures are 0 °c and 55 °c, respectively. The degree of superheating and subcooling are 15 °c and 15 °c . Compressor isentropic efficiency is 0.88 determine, condenser heat load, coefficient of performance, input power in kW.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter44: Geothermal Heat Pumps

Section: Chapter Questions

Problem 12RQ: The function of the pressure tank in an open-loop, geo-thermal heat pump well system is to prevent...

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