Introduction to Engineering Thermodynamics - Test 2 |, Exams of Mathematics

Download Introduction to Engineering Thermodynamics - Test 2 | and more Exams Mathematics in PDF only on Docsity! ENGI 2334 — latroduction tv Engineering Thermodynamics Test 2 Fall 2009 - November 9, 2009 Name SS# or ID 1. A piston-cylinder arrangement initially contains water at P=2000 kPa and T=240°C. The piston is moved to a final position where the volume is twice the initial volume. During the piston movement there is heat-transfer to ihe waler in. such a way that the pressure in the cylinder remains constant. Find (a) the work done per kilogram of water during the expansion, (b) the heat transferred in the process, and (c) the final temperature. (25 points) Stat 1; Pz 2o00kfe, T= 20°" Table Bl. 3 By terpotalcen, (DHO60 “Zig te) — VY 2009663 41 nila 09963) Ru oee0 2 24E) 6.10 93 9f/ t= ~ (stele befiveen 2TGO5T and L40LS1} = 287501 Ff ry State 2: fe = 2000 hfe L 2 LU, =0.2166 mk fia fonturttche wet vol) = 3853-67 kT /keg ) Work constint RRESUAR , ; Wr =P (OQHV,) $2000 (012166 61099) 22 16.6 Wty b) He, af Franstuned at constant esr we, 5 Viaet-A h22953e7 28 1S p7= ae C) T; = 600 +(100- 606) 02165 (TE pay fyy 6: 2.2323 -6 «(99 6b 2. A sifeam turbine is designed to operate at a mass flow rate of 1.5 kg/s. The inlet conditions arc P;+2000 kPa, T,=400°C, V;=60 m/s, and the outlet conditions are P2=100 kPa, x2=0.98, V2=150 m/s. The outlet elevation is t m higher than the inlet elevation, and the heat loss is 50 kW. Evaluate the power output of the turbine. (25 points) Ankit emdiliess P =2000 ke, T= 400°C Tbe B13, ‘hy = 34160 k KT/k5 Outtet cant bias, R= [06 ke (a Xe =O648 Table B26 fy = titls, ga 267546 Ie Coe ae nonenrted "2263030 Ky /kg —_ ast ~ kaw, GQ ely +e egeri vagal ee" 5b 405 BIHT 654 Sats ps leeas1 12 " 5 ts “eli 5+ GTO = 346234 +