Chapter 11 Problems

ME354 Thermodynamics 2

Chapter 11 Problems


Problem 11-9
Determine the dew point of the products when n-butane (C4H10) reacts with stoichiometric dry air if the pressure is 18 psia. What is the effect on the dew point if 100 percent excess air is applied to the reaction?

Answer:
a) Tdp= 136.98 oF
b) Tdp= 115.8 oF

View Gif Image
Solution
View Postscript File
(61.9 KBytes)

Problem 11-31
Estimate the adiabatic flame temperature for a stoichiometric reaction of n-butane (C4H10) with air at an inlet temperature of 25 oC. Find the LHV and the HHV for the butane.

Answer:
a) Tdp= 4318 R
b) LHV= 48 MJ/kg, HHV = 51 MJ/kg

View Gif Image
Solution
View Postscript File
(79.9 KBytes)

Problem 11-35
Estimate the adiabatic flame temperature when methane (CH4) at 77 oF reacts with 80 percent theoretical air also at 77 oF. (Note that CO will be present in the products, since the reaction is one of incomplete combustion.)

Answer: Tad = 3739 R

View Gif Image
Solution
View Postscript File
(79.4 KBytes)

return to sitemap Return to Sitemap

return to home page

All web page HTML © by Richard Culham
Most recent update: 12-09-97