Wednesday, September 17, 2008

TE 303 - HW #3, P2 - R-134a NIST/TFT Fundamentals - 12 pts

Complete the following table for R-134a(revisited from HW2) using either the NIST Webbook or the Thermal Fluids Excel Plug in. Be sure to cite which one that you used. Your grade will be based mostly on the use of technology, not on the answers. Your solution must be different than your solution from HW2.

Include an analysis of a comparison of this solution (including Problem 1) to using traditional data tables in HW2. Are the values comparable? Is interpolation still necessary? Which method is more efficient? Explain. (4 pts)

T(oF) P(psia) U(Btu/lbm) x(lbm vap/lbm) Phase Description

a.) P = 80 psia and U = 126 Btu/lbm
b.) T = 15 degF and x = 0.6 lbm vap/lbm
c.) T = 10 degF and P = 70 psia
d.) P = 180 psia and U = 226 Btu/lbm
e.) T = 110 degF and x = 1.0 lbm vap/lbm

3 Old Comments

1 comment:

Anonymous said...

Typo: please solve for R134a, not water.