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

---
 1226/CH17/EX17.43/EX17_43.jpg | Bin 0 -> 136993 bytes
 1226/CH17/EX17.43/EX17_43.sce |  38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100755 1226/CH17/EX17.43/EX17_43.jpg
 create mode 100755 1226/CH17/EX17.43/EX17_43.sce

(limited to '1226/CH17/EX17.43')

diff --git a/1226/CH17/EX17.43/EX17_43.jpg b/1226/CH17/EX17.43/EX17_43.jpg
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diff --git a/1226/CH17/EX17.43/EX17_43.sce b/1226/CH17/EX17.43/EX17_43.sce
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+clc;funcprot(0);//EXAMPLE 17.43
+// Initialisation of Variables
+I=210;.....................//Output of generator in A
+V=200;.....................//Generator voltage in V
+etag=0.82;.................//Generator efficiency 
+mf=11.2;....................//Fuel used in kg/h
+C=42600;.......................//Calorific value of fuel in kJ/kg
+afr=18;....................//Air fuel ratio
+mc=580;.....................//Mass of water through calorimeter in kg/h
+delt=36;....................//Temperature raise in C
+tg=98;........................//Temperature of exhaust in C
+ta=20;.......................//Ambient temperature in C
+phcw=0.32;.....................//Heat lost to cooling jacket is 32% of heat supplied
+cpe=1.05;...................//Specific heat of exhause gases in kJ/kgK
+cpw=4.18;...................//Specific heat of water in kJ/kgK
+//Calculations
+pow=V*I;......................//Total power generated in W
+BP=(pow/1000)/etag;..................//Brake power in kW
+hf=(mf/60)*C;...................//Heat supplied to the engine
+hbp=BP*60;.........................//Heat equivalent of BP
+mg=(mf/60)*(afr+1);...............//Mass of exhaust gases formed per min in kg
+hg=((mc/60)*cpw*(delt))+(mg*cpe*(tg-ta));..........//Heat carried by exhaust gases per min
+hcw=phcw*hf;...................//Heat lost to cooling jacket
+ha=hf-(hcw+hg+hbp);...................//Unaccounted heat
+pf=100;pbp=(hbp/hf)*100;pcw=(hcw/hf)*100;pg=(hg/hf)*100;pa=(ha/hf)*100
+printf("\n\n")
+printf("HEAT BALANCE TABLE\n")
+printf("_______________________________________________________________________\n")
+printf("Item                                      kJ                  Percent\n")
+printf("_______________________________________________________________________\n")
+printf("Heat supplied by fuel                     %d             %f\n",hf,pf)
+printf("Heat absorbed in BP                       %d             %f\n",hbp,pbp)
+printf("Heat taken away by cooling water          %d             %f\n",hcw,pcw)
+printf("Heat carried away by exhaust gases        %d             %f\n",hg,pg)
+printf("Unaccounted heat                          %d             %f\n",ha,pa)
+printf("_____________________________________________________________________")
+
+
-- 
cgit