Engineering, 16.04.2020 01:47 MemnochRize

A commercial refrigerator with refrigerant -134a as the working fluid is used to keep the refrigerated space at -30C by rejecting its waste heat to cooling water that enters the condenser at 18C at a rate of 0.25 kg/s and leaves at 26C. The refrigerant enters the condenser at 1.2 MPa and 65C and leaves at 42C. The inlet state of the compressor is 60 kPa and -34C and the compressor is estimated to gain a net heat of 450 W from the surroundings. Determine

a. the quality of the refrigerant at the evaporator inlet,

b. the refrigeration load,

c. the COP of the refrigerator, and

d. the theoretical maximum refrigeration load for the same power input to the compressor.

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 03.07.2019 15:10, EmilySerna

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

Answers: 1

continue

Engineering, 03.07.2019 19:30, 10040813

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

Answers: 3

continue

Engineering, 04.07.2019 18:10, johnthienann58

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented

Answers: 2

continue

Engineering, 04.07.2019 18:10, demarcuswiseman

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.

Answers: 3

continue

You know the right answer?

A commercial refrigerator with refrigerant -134a as the working fluid is used to keep the refrigerat...