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Diffstat (limited to '1808/CH7/EX7.18/Chapter7_Exampl18.sce')
-rw-r--r-- | 1808/CH7/EX7.18/Chapter7_Exampl18.sce | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/1808/CH7/EX7.18/Chapter7_Exampl18.sce b/1808/CH7/EX7.18/Chapter7_Exampl18.sce new file mode 100644 index 000000000..1f821f3d0 --- /dev/null +++ b/1808/CH7/EX7.18/Chapter7_Exampl18.sce @@ -0,0 +1,26 @@ +clc
+clear
+//INPUT DATA
+V1=100;//volue in mm^3/min
+t1=6;//dry bulb temperature in Degree c
+t11=3;//dry bulb temperature in Degree c
+Rc=40;//Capacity of the coil in TR
+mw=40;//Amount of water vapour added in kg d.a./min
+pva=5.68;//saturation pressure
+p=760;//pressure in mm of Hg
+Ra=287.3;//gas constant
+cp=1.005;//specific pressure
+
+
+//CALCULATIONS
+pv1=(pva-((p-pva)*(t1-t11)*1.8)/(2800-(1.3*(1.8*t1+32))));//Saturation pressure in mm Hg
+v1=Ra*(273+t1)/((p-pv1)*133.5);//volume
+ma=V1/v1;//Amount of air added in kg d.a./min
+w1=0.622*(pv1/(p-pv1));//Specific humidity in kg w.v./kg d.a
+w3=w1+(mw/(ma*60));//Specific humidity in kg w.v./kg d.a
+h1=cp*t1+w1*(2500+1.88*t1);//Enthalpy of air per kg of dry air in kJ/kg d.a.
+h3=h1+33.4;//Enthalpy of air per kg of dry air in kJ/kg d.a.
+t3=h3-(w3*2500)/1.02149;//dry bulb temperature in Degree c
+
+//OUTPUT
+printf('(a)Dry bulb temperature is %3.2f Degree C \n (b)From the psychrometric chart wet bulb temperature is 17.8 Degree C ',t3)
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