Engineering, 02.12.2019 19:00

# Acondenser of a heat pump uses r-134a as a working fluid. the fluid enters the condenser (after leaving the compressor) at a pressure of 120 psia and 140 f and a volume flow rate of 1.5 ft3/s.

the condenser cools the r-134a to a temperature of 90.49 f and a quality of 50% at the same pressure as it entered.

based on steady flow through the condenser what is the heat flow rejected to the outside air in btu/s to three significant digits?

Answers: 3

Engineering, 03.07.2019 12:20

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

Answers: 3

Engineering, 03.07.2019 12:30

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

Engineering, 03.07.2019 12:30

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

Answers: 3

Engineering, 03.07.2019 18:19

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

Acondenser of a heat pump uses r-134a as a working fluid. the fluid enters the condenser (after leav...

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