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Diffstat (limited to '3733/CH22/EX22.29/Ex22_29.sce')
-rw-r--r-- | 3733/CH22/EX22.29/Ex22_29.sce | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/3733/CH22/EX22.29/Ex22_29.sce b/3733/CH22/EX22.29/Ex22_29.sce new file mode 100644 index 000000000..ef1dd006d --- /dev/null +++ b/3733/CH22/EX22.29/Ex22_29.sce @@ -0,0 +1,46 @@ +// Example 22_29
+clc;funcprot(0);
+//Given data
+p_a=4.5;// bar
+p_b=0.04;// bar
+p_1=15;// bar
+p_2=0.04;// bar
+m_s=48000;// kg/hr
+T_a=450;// °C
+T_b=217;// °C
+h_fa=62.9// kJ/kg
+h_fb=30.0;// kJ/kg
+h_ga=356;// kJ/kg
+h_gb=330;// kJ/kg
+s_fa=0.135;// kJ/kg-K
+s_fb=0.081;// kJ/kg-K
+s_ga=0.539;// kJ/kg-K
+s_gb=0.693;// kJ/kg-K
+v_sfa=80*10^-6;// m^3/kg
+v_sfb=76.5*10^-6;// m^3/kg
+v_sga=0.068;// m^3/kg
+v_sgb=5.178;// m^3/kg
+
+//Calculation
+m_h2o=(m_s/3600);// kg/sec
+// s_a=s_b
+x_b=(s_ga-s_fb)/(s_gb-s_fb);
+h_b=h_fb+(x_b*(h_gb-h_fb));// kJ/kg
+h_c=30;// kJ/kg
+h_fc=h_c;// kJ/kg
+//From h-s chart:
+h_1=2800;// kJ/kg
+h_2=1920;// kJ/kg
+// From steam tables
+h_f3=121.4;// kJ/kg
+h_f4=844.6;// kJ/kg
+m_hg=(m_h2o*(h_1-h_f3))/(h_b-h_fc);// kg/sec
+m=m_hg/m_h2o;
+W_Hg=m_hg*(h_ga-h_b);// kW
+W_H2o=m_h2o*(h_1-h_2);// kW
+W_t=(W_Hg+W_H2o)/1000;//Total work done per second in MW
+Q_s=m_hg*(h_ga-h_fc);// The total heat supplied in kJ/sec
+n_o=((W_t*1000)/Q_s)*100;// Overall efficiency in %
+printf('\nThe overall efficiency of the cycle=%0.1f percentage \nThe flow of mercury through mercury turbine=%0.1f kg/sec \nTotal work done per second=%0.1f MW',n_o,m_hg,W_t);
+// The answer vary due to round off error
+
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