a b A Carnot vapor refrigeration A Carnot vapor refrigeration cycle uses R- 134a as the working fluid. The refrigerant cycle uses R- 134a as the working fluid. The refrigerant enters the condenser as enters the condenser as saturated vapor at 28°C and saturated vapor at 28°C and leaves as saturated liquid. The leaves as saturated liquid. The evaporator operates at a temperature of - 10°C. For every kg of refrigerant flow, calculate the amount of heat evaporator operates at a temperature of - 10°C. For every kg of refrigerant flow, calculate the heat rejected in absorbed in the evaporator, kJ.A the condenser, kJ. * A Carnot vapor refrigeration cycle uses R- 134a as the working fluid. The refrigerant enters the condenser as saturated vapor at 28°C and leaves as saturated liquid. The evaporator operates at a temperature of - 10°C. For every kg of refrigerant flow, calculate the work of compression. kJ.

Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Consider a two-stage cascade refrigeration cycle with a flash chamber as shown in the figure with refrigerant-134a as the working fluid. The evaporator temperature is -10°C and the condenser pressure is 1600 kPa. The refrigerant leaves the condenser as a saturated liquid and is throttled to a flash chamber operating at 0.45 MPa. Part of the refrigerant evaporates during this flashing process, and this vapor is mixed with the refrigerant leaving the low-pressure compressor. The mixture is then compressed to the condenser pressure by the high-pressure compressor. The liquid in the flash chamber is throttled to the evaporator pressure and cools the refrigerated space as it vaporizes in the evaporator. The mass flow rate of the refrigerant through the low-pressure compressor is 0.11 kg/s. Assume that the refrigerant leaves the evaporator as a saturated vapor and…

1. Consider a refrigerator that uses refrigerant-134a as its working fluid and operates on the ideal vapor-compression refrigeration cycle except that the compression process is non-ideal. The condenser is maintained at 900 kPa, and the evaporator at -26°C. Assume that Stream 1 is a saturated vapor and that Stream 3 is a saturated liquid. 3 Warm environment QH HAMA Condenser Expansion valve Evaporator Jum Cold refrigerated space 2 Win Compressor a) If the mass flow of the refrigerant is 1.2 kg/s, what is the rate of heat removal from the cold space? Give your answer to the nearest kW. b) What is the COP of this refrigerator if the compressor has an isentropic efficiency of 87%?

Define C.O.P. of the simple vapor compression refrigeration cycle R-717. The evaporation temperature is -15 ° C and the condenser temperature is 40 ° C. COP =