Engineering, 20.07.2019 00:20, hgghukghj1814

If in a standard vapor-compression cycle using refrigerant 22 the evaporating temperature is - 5°c and the condensing temperature is 30°c, sketch the cycle on pressure-enthalpy coordinates and determine a. the work of compression, b. the refrigerating effect c. the heat rejected in the condenser, all in kilojoules per kilograms d. the coefficient of performance.

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, oliviasoreo92

Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa

Answers: 1

continue

Engineering, 04.07.2019 18:10, tobyhollingsworth178

Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer

Answers: 2

continue

Engineering, 06.07.2019 02:30, jayjay5246

Air (c-1.006 kj/kg. k, r-0.287 kj/kg. k) enters a nozzle steadily at 280 kpa and 77°c with a velocity of 50 m/s and exits at 85 kpa and 320 m/s. the heat losses from the nozzle to the surrounding medium at 20°c are estimated to be 3.2 kj/kg. determine (a) the exit temperature and (b) the total entropy change for this process. solve this problem using constant specific heats.

Answers: 1

continue

Engineering, 06.07.2019 02:30, chickennbutt0730

On solidification from a melt, the polymer polyethylene forms a semi-crystalline spherulite structure. (i) sketch an individual spherulite and label the amorphous and crystalline regions. (ii) draw a schematic to show the changes in specific volume with temperature during cooling from the melt, comparing it to the theoretical extremes of fully crystalline and fully amorphous (indicate tm and tg)

Answers: 2

continue

Do you know the correct answer?

If in a standard vapor-compression cycle using refrigerant 22 the evaporating temperature is - 5°c a...