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Diffstat (limited to '3843/CH11/EX11.6/Ex11_6.sce')
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1 files changed, 23 insertions, 0 deletions
diff --git a/3843/CH11/EX11.6/Ex11_6.sce b/3843/CH11/EX11.6/Ex11_6.sce new file mode 100644 index 000000000..04b51eb91 --- /dev/null +++ b/3843/CH11/EX11.6/Ex11_6.sce @@ -0,0 +1,23 @@ +// Example 11_6
+clc;funcprot(0);
+// Given data
+T=25;// °C
+T_dp=10;// The dew point temperature in °C
+P=100;// kPa
+V=150;// m^3
+P_g=3.169;// kPa
+M_v=18;// kg/k.mol
+M_a=28.97;// kg/k.mol
+R_a=0.287;// kJ/kg.K
+
+// Calculation
+// (a)
+P_v=1.228;// kPa
+P_a=P-P_v;// The partial pressure of air in kPa
+w_1=0.622*(P_v/P_a);// The humidity ratio in kg H2O/kg dry air
+w_2=0.01205;// kg H2O/kg dry air
+dw=w_2-w_1;// The difference in humidity ratio in kg H2O/kg dry air
+dm_v=dw*((P_a*V)/(R_a*(T+273)));// kg H2O
+// (b)
+phi=1.608*((w_1*P_a)/(P_g));// The relative humidity in %
+printf("\n(a)The amount of water vapor that will condense,delm_v=%0.3f kg H2O \n(b)The relative humidity,phi=%0.3f or %2.1f percentage.",dm_v,phi,phi*100);
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