diff options
| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /1955/CH1/EX1.14/example14.sce | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '1955/CH1/EX1.14/example14.sce')
| -rwxr-xr-x | 1955/CH1/EX1.14/example14.sce | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/1955/CH1/EX1.14/example14.sce b/1955/CH1/EX1.14/example14.sce new file mode 100755 index 000000000..7cf99a477 --- /dev/null +++ b/1955/CH1/EX1.14/example14.sce @@ -0,0 +1,23 @@ +
+clc
+clear
+//input data
+N=3//Number of stages in turbine
+P=2//Pressure ratio of each stage
+ns=0.75//Stage efficiency of each stage
+T1=873//Initial temperature of air in K
+m=25//Flow rate of air in kg/s
+r=1.4//ratio of specific heats for air
+Cp=1.005//specific at heat at constant pressure in J/kg.K
+
+//calculations
+np=(r/(r-1))*((log(1-(ns*(1-(1/P)^((r-1)/r)))))/(log(1/P)))//Polytropic efficiency of the process
+nt=((1-(1/P)^(N*np*((r-1)/r)))/(1-(1/P)^(N*((r-1)/r))))//Overall efficiency of the turbine
+W=m*Cp*T1*(1-(1/P)^(N*np*((r-1)/r)))//Power developed by the turbine in kW
+RF=nt/ns//Reheat factor of the process
+
+//output
+printf('(a)The overall efficiency of the turbine is %3.4f\n(b)The power developed by the turbine is %i kW\n(c)The reheat factor of the process is %3.2f',nt,W,RF)
+
+//comments
+// the answer which i have got in scilab is correct it is showing error because the intermediate values have been approximated in textbook where as in the software it is not. if the answer is calculated in the calculator then it is same as that of obtained from the software.
|