food storage room requires a cooling system with a capacity of 15 tons of refrigeration that operates at an evaporator temperature of -17.5 ° C and a condenser temperature of 42.5 ° C. The refrigerant used is R-134a and the system operates in saturated conditions. a. COP = b. Refrigerant flow rate = kg / s. c. Heat loss rate in the condens

1 The condenser can be part of which loop(s)? a- Airside loop b- Chilled-water loop c- Refrigeration loop d-Heat-rejection loop e-Controls loop 2 The evaporator can be part of which loop(s)? a- Airside loop b- Chilled-water loop c- Refrigeration loop d-Heat-rejection loop e-Controls loop 3 Which loop is eliminated in a direct expansion (DX) system? a- Airside loop b- Chilled-water loop c- Refrigeration loop d-Heat-rejection loop e-Controls loop 4 What are some benefits of using a "packaged" piece of cooling equipment rather than a "split" system?

Cold storage uses R134a, the evaporator temperature is -7C and the condenser temperature is 32C. The cooling load is 5.3103 kJ/min. The cycle is ideal. Determine: 1. Mass flowrate of the refrigerant. 2. Coefficient of Performance (COP). - If the water condenser is used that enter at 24C and exit at 30C. determine the water flowrate.

Space storage food requires system cooling capacity 10 ton refrigeration operates in the evaporator temperature -17.8 °C and temperature condenser 33.9 °C. Refrigerant used is R-717 and system operate on conditions saturated. Specify: a. COP = b. The flow rate of the refrigerant = kg/s. c. The rate of heat loss in condenser = kJ/s.