A refrigeration system using refrigerant 22 is to have a refrigerating capacity of 60 TR. The evaporating temperature is is - 10° C and the condensing temperature is 42° C. Enthalpy of condenser entrance is 439.25 kJ/kg. determine mass of refrigerant kg/s Determine heat rejected in the condenser kW volume flow at suction m3 /s

The food storage room requires a cooling system with a capacity of 15 tons of refrigeration that operates at an evaporator temperature of -17.5 Celsius and a condenser temperature of 38.9 degrees Celsius. The refrigerant used is R-134a and the system operates in saturated conditions. Determine C.O.P, refrigerant flow rate and heat loss rate in the condenser.

A water tube boiler produces 250,000 pounds of steam per hour at 1200 psia and1000OF from feed water entering the boiler at 1500 psia and 360oF. Fuel oil havinga higher heating value of 18,200 Btu/lb is supplied to the burners at the rate of20,700 lb/hr. Furnace volume is 1500 cubic feet. Calculate the equivalentevaporation, lb/hrA. 300,117 B. 300,317 C. 300,517 D. 300,717

An ammonia refrigerator operates between evaporating and condensing temperatures of –20 and 50 oC. The vapour is dry saturated at the compressor inlet, and there is no undercooling of the condensate. Calculate: (i) the refrigerating effect. (ii) the mass flow rate per kilowatt of refrigeration capacity

A water temperature rise of 18degF in the water cooled condenser isequivalent in degC to: ?the asnwer is 10 but dont know the solution pls help.

A two-stage R-22 system uses flash-gas remoal and intercooling as in the previous problem. The evaporating temperature is -40 C and the condensing temperature is 30 C. The pumping capacity of the high and low stage compressors is shown below:  (from picture solve a and b)

The food storage room requires a cooling system with a capacity of 10 tons of refrigeration that operates at an evaporator temperature of -17,8°C and a condenser temperature of 30,1°C. the refrigerant used is R-717 and the system operates in saturated conditions. A. COP= B. Refrigerant flow rate=... Kg/s C. Heat loss rate in condenser=... KJ/s

A manufacturing company is intending to use its water cooled condenser for itsproposed cold storage room. The name plate of the condenser gives the followingspecifications:refrigerant ammoniacondenser water inlet 30 OCcondenser water outlet 40 OCcondensing temperature 35 OCrefrigerant flow 3.84 kg/mincirculating water flow 120 kg/minIf the company decided to purchase a new compressor and evaporator, find the tonnageof the system and the temperature in the evaporator, (b) what is the COP? (c) find thetheoretical hp required.

a freon 12 vapour compression system operating at a condenser temperature of 40 degree centigrade and an evaporative temperature of 0 degree centigrade develops 15 tons of refrigeration. using P-H diagram for freon 12, determine, a. the discharge temperature and mass flow rate of the refrigerant circulated, b. the teoretical piston displacement of the condenser and piston displacement per ton of refrigerant c. the theoretical horsepower of the compressor and horsepower per ton of the refrigerant d. the heat rejected in the condenser, and e. the Carnot COP and actual COP of the cycle.

Determine the C.O.P of a simple saturated ammonia (R-717) compression refrigeration cycle. The evaporation temperature is -20°C and the condensor temperature is 40°C