Engineering, 30.08.2019 18:20 liz77717

Acarnot heat engine receives heat at 750°c and rejects the waste heat to the environment at 30°c. the entire work output of the heat engine is used to drive a carnot refrigerator that removes heat from the cooled space at -25°c at a rate of 300 kj/min and rejects it to the same environment at 30°c. determine: i. the thermal efficiency of the heat engine ii. the coefficient of performance of the refrigerator iii. the work input to the refrigerator iv. the minimum rate of heat supply to the heat engine, and v. the total rate of heat rejection.

Answers: 2

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, 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, Fahaddie

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

Answers: 2

continue

Engineering, 04.07.2019 18:10, Larkinlover703

Items are similar to the free issue items, but their access is limited. (clo5) a)-bin stock items free issue b)-bin stock controlled issue c)-critical or insurance spares d)-rebuildable spares e)-consumables

Answers: 1

continue

You know the right answer?

Acarnot heat engine receives heat at 750°c and rejects the waste heat to the environment at 30°c. th...