1 files changed, 23 insertions, 0 deletions
diff --git a/3843/CH11/EX11.9/Ex11_9.sce b/3843/CH11/EX11.9/Ex11_9.sce
new file mode 100644
index 000000000..37ecc0a5e
--- /dev/null
+++ b/3843/CH11/EX11.9/Ex11_9.sce
@@ -0,0 +1,23 @@
+// Example 11_9
+clc;funcprot(0);
+// Given data
+T_1=5;// °C
+T_2=25;// °C
+phi_1=70/100;// The relative humidity at state 1
+V=50;// m^3/min
+P=100;// kPa
+P_g1=0.872;// kPa
+R_a=0.287;// kJ/kg.K
+
+// Calculation
+P_a1=P-(phi_1*P_g1);// kPa
+rho_a1=P_a1/(R_a*(T_1+273));// kg/m^3
+mdot_a=(V/60)*rho_a1;// The mass flux of dry air in kg/s
+// Using psychrometric chart
+h_1=14;// kJ/kg air
+h_2=35;// kJ/kg air
+Q=mdot_a*(h_2-h_1);// The rate of heat transfer in kJ/s
+// From the chart 
+phi_2=19;// The relative humidity at state 2
+printf("\nThe rate of heat transfer,Q=%2.1f kJ/s \nThe final relative humidity,phi_2=%2.0f percentage.",Q,phi_2);
+// The answer provided in the textbook is wrong