Question

What is the thermal efficiency of a gas power cycle using thermal energy reservoirs at 627°C and 60°C? The thermal efficiency is______ %

Answer 1

63 %

Step-by-step explanation:

It is given that the reservoirs is at the temperature of 627°C and 27°C

So lower temperature that is
`T_L` = 60°C=273+60=333 K

And the higher temperature that is
`T_H` = 627°C =273+627=900 K

We know that the thermal efficiency of thermal reservoir = 1-
`(T_L)/(T_H)` =
`1-(333)/(900)` = 0.63 =63 %

So the efficiency of the reservoir is 63%