Engineering, 20.02.2020 11:14 cxndii13

Show from the first principles that, for a perfect gas with constant specific heat capacities
expanding polytropically (i. e. according to the law pvn = constant) in a non-flow process,
the change of entropy can be expressed with usual notation, by the following equation.
2 − 1 =( − / − 1)(/)(2/1)

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, winterblanco

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Answers: 3

continue

Engineering, 04.07.2019 18:10, ayoismeisjjjjuan

Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges

Answers: 1

continue

Engineering, 04.07.2019 18:20, kodyclancy

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero

Answers: 2

continue

Engineering, 04.07.2019 18:20, xcapo1x

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.

Answers: 2

continue

You know the right answer?

Show from the first principles that, for a perfect gas with constant specific heat capacities
...