From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 1460/CH9/EX9.2/9_2.sce | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100755 1460/CH9/EX9.2/9_2.sce (limited to '1460/CH9/EX9.2/9_2.sce') diff --git a/1460/CH9/EX9.2/9_2.sce b/1460/CH9/EX9.2/9_2.sce new file mode 100755 index 000000000..3bc975306 --- /dev/null +++ b/1460/CH9/EX9.2/9_2.sce @@ -0,0 +1,26 @@ +clc +//initialization of variables +P1=400 //lb/in^2 +T1=800+460 //R +Pt1=1 //lb/in^2 +T2=95+460 //R +Pt2=500 //lb/in^2 +es=0.8 +ep=0.75 +et=0.8 +//calculations +disp("From Appendix steam tables and mollier chart") +ht1=62.98 +ht3=1416.4 +ht4s=941.1 +vt1=0.0161 +WbyJ=vt1*(Pt2-Pt1)/(ep*778) +ht2=WbyJ+ht1 +Q=(ht3-ht2)/et +WtbyJ=et*(ht3-ht4s) +dW=778*(WtbyJ-WbyJ) +eta=WtbyJ/Q +//results +printf("Thermal efficiency = %.3f",eta) +printf("\n Specific net work = %d B/lbm",dW) +//The answers in the textbook are a bit different due tot rounding off error -- cgit