Midterm Exam with Answers - Thermodynamics | ENSC 2213, Exams of Thermodynamics

Download Midterm Exam with Answers - Thermodynamics | ENSC 2213 and more Exams Thermodynamics in PDF only on Docsity! ENSC 2213 Thermodynamics EXAM 2 I 10-21-11 NAME ----------- (25) Problem 1. Each of the five parts below is a separate problem. Please calculate the appropriate quantity. You do not have to draw a picture and the system is always the fluid. a ropane is enclosed in a container at 20°e. If the specific volume of the propane in the container is 0.03 m3/kg, determine th~ 0.0) - I.qq~ 'f./(i~ o ,oS ~z..~- I,Clqq 'f to.J ~,./' /16 "" c) Detem1ine the specific volume in ft31 Ibmof propane at 131°F and 20 psia.- ~ etermine the specific volume of ammonia in ft3/lbm at a pressure of 20 Ibv'in2 and a temperature of 50°F. L. ~bit A.6 C ) ~"'?'~ ttl'-( -'100 £-1 - Z 9«J. "2-1.-:: ------ 'tl/<:;-«10 ? '11.'-( - 2.' C{ ;:~ vI!-o C Z 'Ib If. I '1 {<.{ - <.<(>0 _ ~'" - z. q i Z .1 '-('to - ,<0<:> -;WZ, q - v:;; 2. 'j 4"'0 ~ z H~.1 LA~I'''' -::) ZT, <.{ -t..o---- :: 81 - "10 ?,? - Lot t,.'1: Z 9b~ 0' /;:;. re of v - bd-"'Z. '7 ,ttl,,! - ; 0 , ~2 ! 1~9~ ~02 .'170/?'1 D termine the enthalpy in kJ/kg of watcr at a pr 80°C. E7.0~ d) Determine the internal energy in kJ/kg of watcr at a pressure of 23.4 bar and a-te perature of 4l7~C. .------- 20 '0 ',7. 1'I;.z -?c.-@ 2 ENSC 2213 Thermodynamics EXAM 2/10-21-11 NAMJ (25) Problem 2. Nitrogen gas is stored in a tank with a volume of 5 ft3 at a temperature of 4000R and a pressure of 4,000 psia. Determine the mass in the tank in Ibm. Justify with calculations any assumptions you make. v.,. < .:; f./ ; J~tjOO 'I( ':: -b 0 •f- I,~~] /...., b f- ::. f<-- . J/0,'1" f'j, . .ff I;w;:,r, OIL Z-C{,IJ I I~,?<! 3 ,