Page 1 of 1
Q7. A heat pump with refrigerant-134a (R-134a) as the working fluid is used to keep a space at 25 °C by absorbing heat f
Posted: Mon Jul 11, 2022 10:07 am
by answerhappygod
- Q7 A Heat Pump With Refrigerant 134a R 134a As The Working Fluid Is Used To Keep A Space At 25 C By Absorbing Heat F 1 (130 KiB) Viewed 26 times
Q7. A heat pump with refrigerant-134a (R-134a) as the working fluid is used to keep a space at 25 °C by absorbing heat from geothermal water that enters the evaporator at Ti,water = 62 °C at a rate of 0.068 kg/s and leaves at To,water = 40 °C. The specific heat of liquid water is 4.18 kJ/(kg.K). Refrigerant enters the evaporator at TR-134a = 10 °C with a quality of x = 14 % and leaves at the same pressure as saturated R-134a vapor at the same temperature. The compressor consumes 1.8 kW of power. For this problem you must use property tables (from the textbook). Determine the mass flow rate (in kg/s) of the refrigerant. Please pay attention: the numbers may change since they are randomized. Your answer must include 4 places after the decimal point.