CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The pressure ratio across a gas turbine (for air, specific heat at constant pressure, cp=1040J/kgK and ratio of specifc heats γ=1.4 is 10. If the inlet temeprature to the turbine is 1200K and te isentropic efficiency is 0.9, the gas temperature at turbine exist is
  1. 679.4

Open in App
Solution

The correct option is A 679.4
Given data: cp=1040J/kgK;γ=1.4;rp=10;
T3=1200K;ηγ=0.9
T3T4s=(rp)γ1γ


1200T4s=(10)(1.41)/1.4
or T4s=621.53K
ηT=T3T4T3T4s
0.9=1200T41200621.53
or T4=679.4K

flag
Suggest Corrections
thumbs-up
1
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Heat Capacity
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon