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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /1808/CH6/EX6.4 | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
Diffstat (limited to '1808/CH6/EX6.4')
| -rw-r--r-- | 1808/CH6/EX6.4/Chapter6_Exampl4.sce | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/1808/CH6/EX6.4/Chapter6_Exampl4.sce b/1808/CH6/EX6.4/Chapter6_Exampl4.sce new file mode 100644 index 000000000..a71027cd2 --- /dev/null +++ b/1808/CH6/EX6.4/Chapter6_Exampl4.sce @@ -0,0 +1,36 @@ +clc
+clear
+//INPUT DATA
+Tmin=-30;//minimuum temperature in Degree C
+Tmax=35;//maximum temperature in Degree C
+S1=0.6839;//entropy in kJ/kgK from properties of R12 TABLES
+S2=0.6893;//entropy in kJ/kgK from properties of R12 TABLES
+S3=0.2559;//entropy in kJ/kgK from properties of R12 TABLES
+S4=0.2559;//entropy in kJ/kgK from properties of R12 TABLES
+S5=0.0371;//entropy in kJ/kgK from properties of R12 TABLES
+S6=0.7171;//entropy in kJ/kgK from properties of R12 TABLES
+h2=201.5;//enthalpy in kJ/kg from properties of R12 TABLES
+h3=69.5;//enthalpy in kJ/kg from properties of R12 TABLES
+h5=8.9;//enthalpy in kJ/kg from properties of R12 TABLES
+h6=174.2;//enthalpy in kJ/kg from properties of R12 TABLES
+Re=1*210;//Ref.capacity
+
+
+//CALCULATIONS
+x1=(S1-S5)/(S6-S5);//ratio fo entropies
+x2=(S4-S5)/(S6-S5);//ratio fo entropies
+h1=h5+x1*(h6-h5);//enthalpy at point 1
+h4=h5+x2*(h6-h5);//enthalpy at point 4
+Wc=h2-h1;//work of compression
+We=h3-h4;//work of expansion
+Qa=h1-h4;//Heat absorbed in kJ/kg
+Qr=h2-h3;//Heat rejected in kJ/kg
+Wn=Wc-We;//net workdone in kJ/kg
+COP=(Qa/Wn);//COP
+COPc=(Tmin+273)/(Tmax-Tmin);//COP Carnot
+COPa=0.75*COPc;//Actual COP
+P=Re/(COPa*60);//Power consumption per ton
+Hr=(210/60)+P;//Heat rejected per ton
+
+//OUTPUT
+printf('(a)work of compression is %3.2f kJ/kg \n work of expansion %3.1f kJ/kg \n Heat rejected is %3.i kJ/kg \n COP is %3.2f \n (b)Power consumption per ton is %3.2f kW \n heat rejected per ton is %3.2f kW',Wc,We,Qr,COP,P,Hr)
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