Please help!! C Exercise 12.62 Part A of a gasoline engine and a diesel engine i
ID: 2034675 • Letter: P
Question
Please help!! C Exercise 12.62 Part A of a gasoline engine and a diesel engine if the cold reservoir What are the maximum Carnot efficiencies emperature is 31 C? Enter your answers numerically separated by a comma Take temperatures and efficiencies to be exact The autoignition temperature of a fuel is defined as the temperature at which a fue-air mixture would self-explode and ignite. Thus, it sets an upper limi on the temperature of the hot reservoir in an automobile engine. The autoignition temperatures for commonly available gasoline and diesel fuel are abourt 495 °F and 600 "F, respectively Submit Previous Answers Request Answer X Incorrect, Try Again Provide Feedback Next >Explanation / Answer
Efficiency of Engine:
%n = (1-T2/T1)*100
From Faherenite to Kevin conversion we get,
where T1 = 530.37 K
and T2 = (31+273) => 304.15 K
Hence, %n = (1 - 304.15/530.37)*100 => 0.42*100 => 42%
For diesel engine:
T1 = 588.706 K and T2=304.15 K
%n = (1 - 304.15/ 588.706)*100
=0.4834*100
=48.34 %