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Diffstat (limited to '167/CH5/EX5.5/ex5.sce')
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1 files changed, 19 insertions, 0 deletions
diff --git a/167/CH5/EX5.5/ex5.sce b/167/CH5/EX5.5/ex5.sce new file mode 100755 index 000000000..f9cfa2056 --- /dev/null +++ b/167/CH5/EX5.5/ex5.sce @@ -0,0 +1,19 @@ +//example 5
+//acceleration of steam in nozzle
+clear
+clc
+P1=250 //initial pressure of steam in psia
+T1=700 //initial temperature of steam in °F
+disp('The specific volume and enthalpy of steam at the nozzle inlet are ')
+v1=2.6883 //specific volume of steam at the nozzle inlet in ft3/lbm
+h1=1371.4 // specific enthalpy of steam at the nozzle inletin Btu/lbm
+A1=0.2 //inlet area in ft^2
+M=10 // mass flow rate of steam through nozzle in lbm/s
+V1=M*v1/A1 // inlet velocity in ft/s
+qout=1.2 // heat loss in Btu/lbm
+v2=900 //exit velocity in ft/s
+h2=h1-qout-(v2^2-v1^2)/(2*25037) // enthalpy after exit
+disp('from steam table, the temp. corresponding to this pressure and specifi enthalpy is ')
+T2=662.0 ///in °F
+printf("\n Hence,the inlet velocity is = %.1f ft/s. \n",V1);
+printf("\n The exit temp. of the seam is = %.0f F. \n",T2);
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