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Diffstat (limited to '3843/CH8/EX8.10/Ex8_10.sce')
| -rw-r--r-- | 3843/CH8/EX8.10/Ex8_10.sce | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/3843/CH8/EX8.10/Ex8_10.sce b/3843/CH8/EX8.10/Ex8_10.sce new file mode 100644 index 000000000..7e2cd1c71 --- /dev/null +++ b/3843/CH8/EX8.10/Ex8_10.sce @@ -0,0 +1,21 @@ +// Example 8_10
+clc;funcprot(0);
+// Given data
+T_1=-20;// °C
+T_3=41.64;// °C
+mdot=0.6;// kg/s
+
+// Calculation
+h_1=178.6;// kJ/kg
+h_4=76.3;// kJ/kg
+h_3=h_4;// kJ/kg
+s_1=0.7082;// kJ/kg.K
+s_2=s_1;// kJ/kg.K
+h_2=(((0.7082-0.7021)/(0.7254-0.7021))*(217.8-210.2))+210.2;// kJ/kg
+Q_E=mdot*(h_1-h_4);// The rate of refrigeration in kW
+W_C=mdot*(h_2-h_1);// The power needed to operate the compressor in kW
+COP=Q_E/W_C;// The coefficient of performance
+printf("\nThe rate of refrigeration,Q_E=%2.1f kW \nThe coefficient of performance,COP=%1.2f",Q_E,COP);
+Hp=(W_C/0.746)/(Q_E/3.52);// The rating in Hp/ton
+COP=(h_2-h_3)/(h_2-h_1);// The coefficient of performance
+printf("\nThe rating in Hp/ton=%1.2f \nThe coefficient of performance if the cycle is operated as a heat pump,COP=%1.2f",Hp,COP);
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