![2.39 An industrial plant has available a 4 cylinder, 3 in. bore by 4 in. stroke, 800 rpm, single-acting compressor for use with R-134a. Proposed operating conditions for the compres- sor are 100°F condensing temperature and 40°F evaporating temperature. It is estimated that the refrigerant will enter the expansion valve as a saturated liquid, that vapor will leave the evaporator at a temperature of 45°F, and that vapor will enter the compressor at a temperature of 55°F. Assume a compres- sor-volumetric efficiency of70% and frictionless flow. Calcu- late the refrigerating capacity in tons for a system equipped with this compressor. Plot the cycle on the p-h diagram. [Ans: 12 tons]](http://img.homeworklib.com/questions/a20d48f0-51a1-11eb-96f8-c9598ed611a5.png?x-oss-process=image/resize,w_560)
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2.39 An industrial plant has available a 4 cylinder, 3 in. bore by 4 in. stroke,...
Problem 2: Consider a vapor compression cycle uses ammonia as a refrigerant and follows the theoretical...
Problem 2: Consider a vapor compression cycle uses ammonia as a refrigerant and follows the theoretical single-stage cycle. The condensing temperature is 100 F and the evaporating temperature is 0 F What is the low and high pressures in the cycle? Plot all points entering and exiting cach of the evaporator, compressor, condenser, and expansion valve on a P-h diagram and submitted with you work. Determine the enthalpy of the refrigerant leaving the compressor. Detemine the enthalpy of the refrigerant...
An ideal vapor-compression refrigeration cycle with R-134a as the working fluid has an evaporator temperature of-15...
An ideal vapor-compression refrigeration cycle with R-134a as the working fluid has an evaporator temperature of-15 °C and a condenser pressure of 12 bar. Saturated vapor enters the compressor, and saturated liquid exits the condenser. The mass flow rate of the refrigerant is 3.5 kg/min. Draw and label the cycle on a T-s diagram. What is the coefficient of performance? Ans. 2.98 What is the refrigerating capacity in tons? a. b. c.
1. An air conditioning plant using refrigerant R 134a has evaporating and condensing temperatures of 0°C...
1. An air conditioning plant using refrigerant R 134a has evaporating and condensing temperatures of 0°C and 35°C, respectively. a) Calculate the refrigerating effect for the plant. If the duty is 352 kW of refrigeration, determine the mass flow rate of refrigerant. b) c) What is the volumetric flow rate under suction conditions? d) Calculate the work done in the compression and the corresponding compressor power e) Evaluate the heat rejected and the rate of heat rejection. f) Calculate the...
Problem 2: Consider a vapor compression cycle uses ammonia as a refrigerant and follows the theoretical single-stage cycle. The condensing temperature is 100 F and the evaporating temperature is 0 F What is the low and high pressures in the cycle? Plot all points entering and exiting cach of the evaporator, compressor, condenser, and expansion valve on a P-h diagram and submitted with you work. Determine the enthalpy of the refrigerant leaving the compressor. Detemine the enthalpy of the refrigerant...
An ideal vapor-compression refrigeration cycle with R-134a as the working fluid has an evaporator temperature of-15 °C and a condenser pressure of 12 bar. Saturated vapor enters the compressor, and saturated liquid exits the condenser. The mass flow rate of the refrigerant is 3.5 kg/min. Draw and label the cycle on a T-s diagram. What is the coefficient of performance? Ans. 2.98 What is the refrigerating capacity in tons? a. b. c.
1. An air conditioning plant using refrigerant R 134a has evaporating and condensing temperatures of 0°C and 35°C, respectively. a) Calculate the refrigerating effect for the plant. If the duty is 352 kW of refrigeration, determine the mass flow rate of refrigerant. b) c) What is the volumetric flow rate under suction conditions? d) Calculate the work done in the compression and the corresponding compressor power e) Evaluate the heat rejected and the rate of heat rejection. f) Calculate the...
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