3–37E A spring-loaded piston-cylinder device is initially filled with 0.2 Ibm of an R-134a liquid-vapor mixture whose temperature is – 30°F and whose quality is 80 percent. The spring constant in the spring force relation F = kx is 37 lbf/in, and the piston diameter is 12 in. The R-134a undergoes a process that increases its volume by 40 percent. Calculate the final temperature and enthalpy of the R-134a. Answers: 81.5°F, 120 Btu/lbm %3D
3–37E A spring-loaded piston-cylinder device is initially filled with 0.2 Ibm of an R-134a liquid-vapor mixture whose temperature is – 30°F and whose quality is 80 percent. The spring constant in the spring force relation F = kx is 37 lbf/in, and the piston diameter is 12 in. The R-134a undergoes a process that increases its volume by 40 percent. Calculate the final temperature and enthalpy of the R-134a. Answers: 81.5°F, 120 Btu/lbm %3D
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:3–37E A spring-loaded piston-cylinder device is initially
filled with 0.2 Ibm of an R-134a liquid-vapor mixture whose
temperature is -30°F and whose quality is 80 percent.
The spring constant in the spring force relation F = kx is
37 lbf/in, and the piston diameter is 12 in. The R-134a
undergoes a process that increases its volume by 40 percent.
Calculate the final temperature and enthalpy of the R-134a.
Answers: 81.5°F, 120 Btu/lbm
%3D
Spring
Fluid
D-
FIGURE P3-37E
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