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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 /3685/CH14/EX14.5 | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '3685/CH14/EX14.5')
| -rw-r--r-- | 3685/CH14/EX14.5/Ex14_5.sce | 31 | ||||
| -rw-r--r-- | 3685/CH14/EX14.5/Ex14_5.txt | 5 |
2 files changed, 36 insertions, 0 deletions
diff --git a/3685/CH14/EX14.5/Ex14_5.sce b/3685/CH14/EX14.5/Ex14_5.sce new file mode 100644 index 000000000..ec4e64f47 --- /dev/null +++ b/3685/CH14/EX14.5/Ex14_5.sce @@ -0,0 +1,31 @@ +clc
+P2 = 1554.3 // Pressure at state 2 in kPa
+P1 = 119.5// Pressure at state 1 in kPa
+Pi = sqrt(P1*P2)
+h1 = 1404.6 // Enthalpy at state1 in kJ/kg
+h2 = 1574.3 // Enthalpy at state2 in kJ/kg
+h3 = 1443.5 // Enthalpy at state3 in kJ/kg
+h4 = 1628.1// Enthalpy at state4 in kJ/kg
+h5 = 371.7 // Enthalpy at state5 in kJ/kg
+h6 = h5 // Isenthalpic process
+h7 = 181.5// Enthalpy at state7 in kJ/kg
+w = 30 // capacity of plant in tonnes of refrigeration
+m2_dot = (3.89*w)/(h1-h7) // mass flow rate in upper cycle
+m1_dot = m2_dot*((h2-h7)/(h3-h6))// mass flow rate in lower cycle
+Wc_dot = m2_dot*(h2-h1)+m1_dot*(h4-h3) // Compressor work
+COP = w*3.89/Wc_dot // Coefficient of performance of cycle
+// single stage
+h1_ = 1404.6 //Enthalpy at state1 in kJ/kg
+h2_ = 1805.1 // Enthalpy at state2 in kJ/kg
+h3_ = 371.1 // Enthalpy at state3 in kJ/kg
+h4_ = h3_ // Isenthalpic process
+m_dot = (3.89*30)/(h1_-h4_) // mass flow rate in cycle
+Wc = m_dot*(h2_-h1_) // Compressor work
+COP_ = w*3.89/Wc // Coefficient of performance of cycle
+IW = (Wc-Wc_dot)/Wc_dot // Increase in compressor work
+ICOP = (COP-COP_)/COP_ // Increase in COP for 2 stage compression
+printf("\n Example 14.5\n")
+printf("\n Increase in work of compression for single stage is %f percent",IW*100)
+printf("\n Increase in COP for 2 stage compression is %f percent",ICOP*100)
+//The answers vary due to round off error
+
diff --git a/3685/CH14/EX14.5/Ex14_5.txt b/3685/CH14/EX14.5/Ex14_5.txt new file mode 100644 index 000000000..c2210127e --- /dev/null +++ b/3685/CH14/EX14.5/Ex14_5.txt @@ -0,0 +1,5 @@ +
+ Example 14.5
+
+ Increase in work of compression for single stage is 15.719846 percent
+ Increase in COP for 2 stage compression is 15.719846 percent
\ No newline at end of file |