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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /172/CH7/EX7.4/ex4.sce | |
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| -rwxr-xr-x | 172/CH7/EX7.4/ex4.sce | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/172/CH7/EX7.4/ex4.sce b/172/CH7/EX7.4/ex4.sce new file mode 100755 index 000000000..4693cab22 --- /dev/null +++ b/172/CH7/EX7.4/ex4.sce @@ -0,0 +1,15 @@ +//example 4
+//comparison of ideal carnot heat engine with actual heat engine
+clear
+clc
+Qh=1000 //rate of heat transfer to heat engine in kW
+W=450 //rate of production of work in kW
+Ql=Qh-W //rate of heat rejected by heat engine in kW
+nthermal=W/Qh //efficiency from the definition of efficiency
+Tl=300 //temperature of surroundings in K
+Th=550 //temperature of heat source in Celsius
+ncarnot=1-Tl/(Th+273) //efficiency if heat engine is considered to be ideal carnot heat engine
+W2=ncarnot*Qh //rate of work production if heat engine is assumed to be ideal carnot heat engine in kW
+Ql2=Qh-W2 //rate of heat rejected by heat engine in kW if heat engine is assumed to be ideal carnot heat engine
+printf("\n hence,energy discarded to the ambient surroundings is Ql2=%.0fkW.\n",Ql2)
+printf("\n and the engine efficiency is ncarnot=%.3f.\n",ncarnot)
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