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Diffstat (limited to '2657/CH1/EX1.6')
| -rwxr-xr-x | 2657/CH1/EX1.6/Ex1_6.sce | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/2657/CH1/EX1.6/Ex1_6.sce b/2657/CH1/EX1.6/Ex1_6.sce new file mode 100755 index 000000000..2b5f46d4a --- /dev/null +++ b/2657/CH1/EX1.6/Ex1_6.sce @@ -0,0 +1,20 @@ +//Calculations on diesel engine
+clc,clear
+//Given:
+bp=5 //Brake power in kW
+eta_it=30 //Indicated thermal efficiency in percent
+eta_m=75 //Mechanical efficiency in percent (printing error)
+//Solution:
+ip=bp*100/eta_m //Indicated power in kW
+CV=42000 //Calorific value of diesel(fuel) in kJ/kg
+m_f=ip*3600/(eta_it*CV/100) //Fuel consumption in kg/hr
+//Density of diesel(fuel) = 0.87 kg/l
+rho_f=0.87 //Density of fuel in kg/l
+V_f=m_f/rho_f //Fuel consumption in l/hr
+isfc=m_f/ip //Indicated specific fuel consumption in kg/kWh
+bsfc=m_f/bp //Brake specific fuel consumption in kg/kWh
+//Results:
+printf("\n The fuel consumption of engine, m_f in,\n (a)kg/hr = %.3f kg/hr\n (b)litres/hr = %.2f l/hr",m_f,V_f)
+printf("\n\n (c)Indicated specific fuel consumption, isfc = %.3f kg/kWh",isfc)
+printf("\n (d)Brake specific fuel consumption, bsfc = %.3f kg/kWh\n\n",bsfc)
+//Data in the book is printed wrong
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