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Diffstat (limited to '1226/CH17/EX17.10/EX17_10.sce')
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1 files changed, 16 insertions, 0 deletions
diff --git a/1226/CH17/EX17.10/EX17_10.sce b/1226/CH17/EX17.10/EX17_10.sce new file mode 100755 index 000000000..e494833a4 --- /dev/null +++ b/1226/CH17/EX17.10/EX17_10.sce @@ -0,0 +1,16 @@ +clc;funcprot(0);//EXAMPLE 17.10
+// Initialisation of Variables
+Db=0.7;.............................//Diameter of brake pulley in m
+d=0.025;............................//Diameter of the rope in m
+W=50;...............................//Load on the tight side of the rope in kg
+S=50;...............................//Spring balance reading in N
+N=900;..............................//Engine rpm
+mf=4;...............................//Rate of fuel consumption in kg/h
+C=44000;............................//Calorific value of fuel in kJ/kg
+g=9.81;.............................//Acceleration due to gravity in m/s^2
+//Calculations
+BP=(((W*g)-S)*%pi*(Db+d)*N)/(60*1000);........................//Brake power in kW
+bsfc=mf/BP;...................................................//Brake specific fuel consumption in kJ/hW-h
+disp(bsfc,"Brake specific fuel consumption (in kJ/hW-h)")
+etathB=(BP*3600)/(mf*C);.............................................//Brake thermal efficiency
+disp(etathB*100,"Brake thermal efficiency:")
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