A refrigeration system using refrigerant 22 is to have a refrigerating capacity of 60 TR. The evaporating temperature is -10 °C and the condensing temperature is 42 °C. Determine the heat rejected by the condenser in kw. Enthalpy of condenser entrance = 440 KJ/kg, exit = 254 KJ/kg. Evaporator exit = 406 %3D %3D KJ/kg, evaporator entrance = 254 KJ/kg. %3D

A refrigeration system using refrigerant 22 is to have a refrigerating capacity of 60 TR. The evaporating temperature is -10 °C and the condensing temperature is 42 °C. Determine the heat rejected by the condenser in kw. Enthalpy of condenser entrance = 440 KJ/kg, exit = 254 KJ/kg. Evaporator exit = 406 %3D %3D KJ/kg, evaporator entrance = 254 KJ/kg. %3D

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter47: High-pressure, Low-pressure, And Absorption Chilled-water Systems

Section: Chapter Questions

Problem 13RQ: The subcooling temperature in a condenser can be measured by taking the difference between the A....

See similar textbooks

Similar questions

The condensing pressure is 260 psig and the condenser outlet temperature is 108F for R-22. By how many degrees is the liquid subcooled in the condenser? A. 12F B. 42F C. 7F D. 14F
Condensers in these refrigerators are all_______cooled.
The subcooling temperature in a condenser can be measured by taking the difference between the A. suction pressure converted to temperature and the boiling refrigerant. B. boiling temperature and the condensing temperature. C. condensing temperature and the leaving-refrigerant temperature. D). condensing temperature and the entering-refrigerant temperature.
Welded ______sealed compressors are normally used in household refrigerators.
What are the approximate temperature ranges tor low-, medium-, and high-temperature refrigeration applications?
Four methods for controlling head pressure in an air-cooled condenser are ______, ______, _______, and
Why is two-stage compression popular for extra-low-temperature refrigeration systems?
Define flash gas, and explain how it applies to the net refrigeration effect of the refrigeration cycle.
The condensing pressure is 260 psig and the meteringdevice inlet temperature is 100F for R-22. What is the total subcooling in this system? A. 15F B. 20F C. 25F D. 30F
Most condensers will subcool the refrigerant to between ____F below the condensing temperature of the refrigerant. A. 0 and 5 B. 5 and 10 C. 10 and 20 D. 20 and 30
The typical difference in temperature between the cooling tower water supplied to the condenser and the out-door wet-bulb temperature is _____F.
A vapour compression refrigeration plant, which uses refrigerant-134aoperates at an evaporator pressure of 240 kPa and a condenser pressureof 1.2 MPa. The refrigerant leaves the evaporator at 0oC and exits thecondenser at 40oC. The two-stage compression is isentropic. Therefrigerant that leaves the condenser is throttled to a flash chamber with asaturation temperature of 15.71oC. Saturated vapour is extracted from theflash chamber and mixes with the refrigerant that leaves the low-pressurecompressor, before entering the high-pressure compressor. Saturatedliquid from the flash chamber is throttled to the evaporator. If therefrigeration load is 500 kW, determine the: a) mass flow rate of refrigerant through the condenser (kg/s),b) mass flow rate of refrigerant extracted from the flash chamber (kg/s)c) Power required by the low pressure compressor (kW).