initial commit / add all books

1 files changed, 25 insertions, 0 deletions

diff --git a/3843/CH8/EX8.4/Ex8_4.sce b/3843/CH8/EX8.4/Ex8_4.sce
new file mode 100644
index 000000000..f295b0f6b
--- /dev/null
+++ b/3843/CH8/EX8.4/Ex8_4.sce
@@ -0,0 +1,25 @@
+// Example 8_4

+clc;funcprot(0);

+// Given data

+P_1=4;// kPa

+P_2=2;// MPa

+T_3=400;// °C

+h_2=192;// kJ/kg

+h_3=3248;// kJ/kg

+s_3=7.1279;// kJ/kg.K

+

+// Calculation

+s_f4=0.4225;// kJ/kg.K

+s_fg4=8.0529;// kJ/kg.K

+s_4=s_3;// kJ/kg.K

+x_4=(s_4-s_f4)/s_fg4;// The quality of steam at state 4

+q_B=h_3-h_2;// The heat input in kJ/kg

+h_f4=121;// kJ/kg

+h_fg4=2433;// kJ/kg

+h_4=h_f4+(x_4*h_fg4);// kJ/kg

+w_T=h_3-h_4;// kJ/kg

+n_2=w_T/q_B;// The cycle efficiency

+// From example 8.1

+n_1=0.3232;// The power cycle efficiency at P_1=10 MPa

+Pi=((n_2-n_1)/n_1)*100;// The percentage increase in efficiency

+printf("\nThe percentage increase in efficiency is %1.1f percentage.",Pi);