The steam jet refrigeration system is used to provide 178 tons of refrigeration load for part of the office buildings of a power plant. Suppose saturated steam is used as a stimulus. The temperature of the actuator, evaporator and condenser vapors is 278°C , 10°C , 50°C , respectively, and the quality of the output steam at the outlet of the ejector mixing chamber is 0.90. Calculate the required refrigerant mass flow rate and system performance coefficient. Consider nozzle efficiency, mixing and density of 90%, 65% and 90%, respectively.

The steam jet refrigeration system is used to provide 178 tons of refrigeration load for part of the office buildings of a power plant. Suppose saturated steam is used as a stimulus. The temperature of the actuator, evaporator and condenser vapors is 278°C , 10°C , 50°C , respectively, and the quality of the output steam at the outlet of the ejector mixing chamber is 0.90. Calculate the required refrigerant mass flow rate and system performance coefficient. Consider nozzle efficiency, mixing and density of 90%, 65% and 90%, respectively.