Question

: The maximum theoretical efficiency of a Carnot engine operating between reservoirs at the steam point and at room temperature is about A :

Answer 1

The value is
`\eta = 0.2145` or 21.45%

Step-by-step explanation:

From the question we are told that

The first reservoir is at steam point
`T_s = 100^o C = 100 + 273 = 373 \ K`

The second reservoir is at room temperature
`T_r = 20^o C = 293 \ K`

Generally the maximum theoretical efficiency of a Carnot engine is mathematically evaluated as

`\eta = 1- (T_r)/(T_s)`

=>
`1 - ( 293)/(373)`

=>
`\eta = 0.2145`