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Diffstat (limited to '3733/CH22/EX22.2/Ex22_2.sce')
-rw-r--r-- | 3733/CH22/EX22.2/Ex22_2.sce | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/3733/CH22/EX22.2/Ex22_2.sce b/3733/CH22/EX22.2/Ex22_2.sce new file mode 100644 index 000000000..f3b7097f6 --- /dev/null +++ b/3733/CH22/EX22.2/Ex22_2.sce @@ -0,0 +1,34 @@ +// Example 22_2
+clc;funcprot(0);
+//Given data
+p_a=10;// bar
+p_b=0.08;// bar
+T_1=450;// °C
+p_1=30;// bar
+p_3=25;// bar
+T_4=33;// °C
+p_4=0.04;// bar
+
+
+//Calculation
+//From tables of mercury the following enthalpy values and entropy values are taken
+h_1=359.11;// kJ/kg
+h_f2=33.21;// kJ/kg
+h_3=h_f2;// kJ/kg
+s_1=0.5089;// kJ/kg.K
+s_f2=0.087;// kJ/kg.K
+Q_fg2=0.5721;// kJ/kg
+h_g2=294.7;// kJ/kg
+x_2=(s_1-s_f2)/(Q_fg2);
+h_2=h_f2+(x_2*h_g2);// kJ/kg
+// From steam tables and chart(For steam cycle)
+h_4=3348.6;// kJ/kg
+h_5=2183;// kJ/kg
+h_6=138;// kJ/kg
+h_7=972;// kJ/kg
+h_8=2803;// kJ/kg
+// Assume m_r=m_hg/m_H2O
+m_r=(h_8-h_7)/(h_2-h_3);
+// For each kg of steam generated,8.42 kg of mercury is to be used
+n=((m_r*(h_1-h_2))+(h_4-h_5))/((m_r*(h_1-h_f2))+(h_7-h_6)+(h_4-h_8));// The cycle efficiency
+printf('\nCycle efficiency=%0.3f',n);
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