QI: An R-134a refrigeration system produces 10 ton of refrigerating effect at the evaporating temperature -10°C and the condensing temperature of 40°C.The absolute pressure measured at the inlet and outlet of evaporator are 2.0 bar and 1.7 bar, respectively. Considering there are no superheat and sub cooling effects, calculate the following parameters with or without a drop of pressure in the evaporator: (i) Refrigerating effect (ii) Mass flow rate (iii) Power requirement in kW/TR (iv) COP

QI: An R-134a refrigeration system produces 10 ton of refrigerating effect at the evaporating temperature -10°C and the condensing temperature of 40°C.The absolute pressure measured at the inlet and outlet of evaporator are 2.0 bar and 1.7 bar, respectively. Considering there are no superheat and sub cooling effects, calculate the following parameters with or without a drop of pressure in the evaporator: (i) Refrigerating effect (ii) Mass flow rate (iii) Power requirement in kW/TR (iv) COP

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

Chapter50: Commercial, Packaged Rooftop, Variable Refrigerant Flow, And Variable Air Volume Systems

Section: Chapter Questions

Problem 22RQ: Variable refrigerant flow systems sense the ______and _____of the refrigerant to determine the...

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Figure below shows a steam jet refrigeration system that produces chilled water in a flash chamber. The chamber is maintained at a pressure by the steam ejector, which removes the vapor generated by entraining it in the low-pressure jet and discharging into the condenser. The vacuum pump removes air and other non-condensable gases from the condenser shell. For the conditions shown on the figure, determine the make-up water and cooling water flow rates in kg/hr. Show diagrams if there are any
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