PROBLEM : An Air Refrigeration System is required to produce a 52.50 kPa & a kW of refrigeration with a cooler pressure of 1,448 refrigerator pressure of 207 kPa. Leaving air temperature are 29 deg. centigrade for cooler & 5 deg. refrigerator. assuming expansion is isentropic & compression is polytropic with n = 1.34 & k 1.40 centigrade for ( for air ). COOLING H2O QR 29°C www AIR COOLER WE |COMPRESSOR AIR EXPANDER REFRIGERATOR 1 5°C QA = 52.5 Kw P4 3 2 1,448 kPa 4 1-.. 207 kPa V P-V Diagram Solve the following & answer the CHOICES : 1. T4 2. ma 3. Wc 4. We 5. СОР

PROBLEM : An Air Refrigeration System is required to produce a 52.50 kPa & a kW of refrigeration with a cooler pressure of 1,448 refrigerator pressure of 207 kPa. Leaving air temperature are 29 deg. centigrade for cooler & 5 deg. refrigerator. assuming expansion is isentropic & compression is polytropic with n = 1.34 & k 1.40 centigrade for ( for air ). COOLING H2O QR 29°C www AIR COOLER WE |COMPRESSOR AIR EXPANDER REFRIGERATOR 1 5°C QA = 52.5 Kw P4 3 2 1,448 kPa 4 1-.. 207 kPa V P-V Diagram Solve the following & answer the CHOICES : 1. T4 2. ma 3. Wc 4. We 5. СОР

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

Chapter3: Refrigeration And Refrigerants

Section: Chapter Questions

Problem 12RQ: The condensing pressure is 260 psig and the condenser outlet temperature is 108F for R-22. By how...

See similar textbooks

Similar questions

A typical temperature relationship between a high-efficiency condenser and the ambient temperature is A. 10F. B. 20F. C. 30F. D. 40F.
Two methods used to power refrigeration compressors on a ship are _____and ____.
Define net refrigeration effect as it applies to the refrigeration cycle.
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 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
What are the approximate temperature ranges tor low-, medium-, and high-temperature refrigeration applications?
What is the heat output, in Btu/h, of a terminal unit with a T of 10F and a water flow rate of 5 gpm?
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 capacity of a refrigeration plant is 60 kW and its design parameters are: -Evaporation temperature: Tev = -40 °C, with DT_evaporator = 8 °C. -Condensing temperature Tcd = 35 °C. -The condenser is cooled by water, which enters at 27°C and leaves at 30°C. The subcooling ∆T it is 5°C. The refrigerant used is R717. - The ∆T of superheating is 5 °C at the outlet of the evaporator and 15 °C in the pipe of aspiration. The pressure loss in the suction pipe is 1°C while the loss of pressure in the pipe on the evaporation coil is 6°C. It is requested: a) Show the scheme of principle suitable for the indicated conditions and draw t he cycle diagram. B) Calculate the theoretical power of the compressor in kW C) Determine the COP and the efficiency of the system.
A Single Stage Vapor Compression (SSVC) refrigeration system has a cooling capacity of 7.5 tons. The following are the actual conditions: discharge of the evaporator is at -30°C & 0.2 MPa, discharge of the condenser is at 30°C & 2.0 MPa, discharge of the compressor is at 130°C & 2.5 MPa. Determine the Energy Efficiency Ratio in kJ/hr/W
A Single Stage Vapor Compression (SSVC) refrigeration system has a cooling capacity of 7.5 tons. The following are the actual conditions: discharge of the evaporator is at -30°C & 0.2 MPa, discharge of the condenser is at 30°C & 2.0 MPa, discharge of the compressor is at 130°C & 2.5 MPa. Determine the compressor efficiency.
As shown below, a refrigeration cycle condenses a flow of ammonia from a saturated vapor at 4 barto a saturated liquid. The entering volumetric flow rate of the ammonia is 0.1 m3/s. The ammonia functions asthe cold reservoir for the refrigeration cycle, and the hot reservoir is at 25 ∘C. A faded specification sheet for therefrigeration cycle reads that the required power input is 35 kW.(a) Is this cycle possible? Why or why not?(b) If the cycle is impossible, how much work input is required to make the cycle