tentamen-24jan2012-met-uitwerking

Tentamen-24jan2012-met-uitwerking

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: -law efficiency) W ηth = net Q in Isentropic process for an ideal gas γ −1 v T2 P2 γ = = 1 T1 P v2 1 γ −1 = met γ CP Cv Entropy change of an ideal gas with temperature and pressure and constant cp s (T2 , p2 ) − s (T1 , p1 ) =c p ln T2 p − R ln 2 T1 p1 Isentropic efficiencies for compression and expansion h −h h1 − h2 = = 2,is 1 ηis ,exp , ηis ,compr h1 − h2,is h2 − h1 9 COP (coefficient of performance) QC TC QH TH , COPheating = COPcooling = = = QH − QC TH − TC QH − QC TH − TC Exergy: specific flow exergy and balances v2 ex f =h − h0 + + gz − T0 ( s − s0 ) 2 T dEx = Ex f ,1 − Ex f ,2 + (h0 − T0 s0 )( M 1 − M 2 ) + 1 − 0 Q + W + Exd dt Tb T M ( ex f ,1 − ex f ,2 ) =1 − 0 Q + W + Exd − Tb 10 (9) (yjlCe =j 4' / ^^^) ^3 / := (/ 1000 C r .67 -Vm ^^^^^ ^ "" ''...
View Full Document

This document was uploaded on 02/26/2014 for the course MECH 2120 at Delft University of Technology.

Ask a homework question - tutors are online