(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

FOR THE SAME HIGH AND LOW OPERATING TEMPERATURE LIMITS, compare the efficiencies of petrol , Diesel, and stirling engines

2. Relevant equations

3. The attempt at a solution

the efficiency of petrol as i found is : η=1-[1/(r^(δ-1))]

the efficiency of Diesel : η={1-[1/(r^(δ-1))]}* {((αδ)-1)/(δ(α-1))

stirling : η= R Ln(v2/v1)(T2-T1)/ Cv(T2-T1)+R T2 Ln (v2/v1)

So how can i compare them mathematically ?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Compare efficiencies of petrol/Dieselstirling

Can you offer guidance or do you also need help?

**Physics Forums | Science Articles, Homework Help, Discussion**