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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /2735/CH15 | |
| 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 '2735/CH15')
| -rwxr-xr-x | 2735/CH15/EX15.1/Ex15_1.sce | 38 | ||||
| -rwxr-xr-x | 2735/CH15/EX15.2/Ex15_2.sce | 22 | ||||
| -rwxr-xr-x | 2735/CH15/EX15.3/Ex15_3.sce | 27 | ||||
| -rwxr-xr-x | 2735/CH15/EX15.4/Ex15_4.sce | 22 | ||||
| -rwxr-xr-x | 2735/CH15/EX15.5/Ex15_5.sce | 30 | ||||
| -rwxr-xr-x | 2735/CH15/EX15.6/Ex15_6.sce | 25 |
6 files changed, 164 insertions, 0 deletions
diff --git a/2735/CH15/EX15.1/Ex15_1.sce b/2735/CH15/EX15.1/Ex15_1.sce new file mode 100755 index 000000000..76c44f5fd --- /dev/null +++ b/2735/CH15/EX15.1/Ex15_1.sce @@ -0,0 +1,38 @@ +clc
+clear
+//Initialization of variables
+p1=600 //psia
+p2=0.2563 //psia
+t1=486.21 //F
+t2=60 //F
+fur=0.75
+//calculations
+disp("from steam tables,")
+h1=1203.2
+hf1=471.6
+hfg1=731.6
+h2=1088
+hf2=28.06
+hfg2=1059.9
+s1=1.4454
+sf1=0.6720
+sfg1=0.7734
+s2=2.0948
+sf2=0.0555
+sfg2=2.0393
+xd=(s1-sf2)/sfg2
+hd=hf2+xd*hfg2
+xa=0.3023
+ha=hf2+xa*hfg2
+wbc=0
+wda=0
+wcd=h1-hd
+wab=ha-hf1
+W=wab+wcd+wbc+wda
+Wrev=hfg1- (t2+459.7)*sfg1
+etat=(t1-t2)/(t1+459.7)
+eta=fur*etat
+//results
+printf("Thermal efficiency = %d percent",etat*100)
+printf("\n Furnace efficiency = %.1f percent",eta*100)
+
diff --git a/2735/CH15/EX15.2/Ex15_2.sce b/2735/CH15/EX15.2/Ex15_2.sce new file mode 100755 index 000000000..89d1fdd82 --- /dev/null +++ b/2735/CH15/EX15.2/Ex15_2.sce @@ -0,0 +1,22 @@ +clc
+clear
+//Initialization of variables
+dhab=-123.1
+etac=0.5
+ha=348.5
+etaf=0.75
+eta=0.85
+hf=471.6
+hfg=731.6
+hc=1203.2
+dhcd=452.7
+//calculations
+dwabs=dhab/etac
+hbd=ha-dwabs
+dwcds=dhcd*eta
+dqa=hc-hbd
+etat=(dwcds+dwabs)/dqa
+eta=etat*etaf
+//results
+printf("Thermal efficiency = %.1f percent",etat*100)
+printf("\n Overall efficiency = %.1f percent",eta*100)
diff --git a/2735/CH15/EX15.3/Ex15_3.sce b/2735/CH15/EX15.3/Ex15_3.sce new file mode 100755 index 000000000..409e0ddbb --- /dev/null +++ b/2735/CH15/EX15.3/Ex15_3.sce @@ -0,0 +1,27 @@ +clc
+clear
+//Initialization of variables
+t=60 //F
+J=778.16
+p1=600 //psia
+p2=0.2563 //psia
+etaf=0.85
+//calculations
+disp("From steam tables,")
+vf=0.01604 //ft^3/lbm
+dw=-vf*(p1-p2)*144/J
+ha=28.06 //Btu/lbm
+hb=29.84 //Btu/lbm
+hd=1203.2 //Btu/lbm
+he=750.5 //Btu/lbm
+dqa=hd-hb
+dqr=ha-he
+dw=dqa+dqr
+dwturb=hd-he
+dwpump=ha-hb
+etat=dw/dqa
+eta=etat*etaf
+//results
+printf("Thermal efficiency = %.1f percent",etat*100)
+printf("\n Overall efficiency = %.1f percent",eta*100)
+
diff --git a/2735/CH15/EX15.4/Ex15_4.sce b/2735/CH15/EX15.4/Ex15_4.sce new file mode 100755 index 000000000..df3412d96 --- /dev/null +++ b/2735/CH15/EX15.4/Ex15_4.sce @@ -0,0 +1,22 @@ +clc
+clear
+//Initialization of variables
+dhab=-1.78
+etac=0.5
+ha=28.06
+eta=0.85
+hf=471.6
+hfg=731.6
+hd=1203.2
+dhcd=452.7
+//calculations
+dwabs=dhab/etac
+hbd=ha-dwabs
+dwcds=dhcd*eta
+dqa=hd-hbd
+etat=(dwcds+dwabs)/dqa
+eta=etat*eta
+//results
+printf("Thermal efficiency = %.1f percent",etat*100)
+printf("\n Overall efficiency = %.1f percent",eta*100)
+
diff --git a/2735/CH15/EX15.5/Ex15_5.sce b/2735/CH15/EX15.5/Ex15_5.sce new file mode 100755 index 000000000..b4a53857e --- /dev/null +++ b/2735/CH15/EX15.5/Ex15_5.sce @@ -0,0 +1,30 @@ +clc
+clear
+//Initialization of variables
+sh=1.6070
+ph=94.8 //psia
+th=324 //F
+tr=60 //F
+hh=1186.2
+pi=94.8 //psia
+hi=1399.5
+si=1.8265
+//calculations
+Q=hi-hh
+Hr=-(tr+459.7)*(si-sh)
+work= Q+Hr
+eff=work/Q
+Qa1=1557.5
+W1=637.1
+etat=W1/Qa1
+he=1374
+hj=948
+Whp=he-hh
+Wlp=hi-hj
+Wnet=Whp+Wlp
+//results
+printf("Thermal efficiency in case 1= %.1f percent",eff*100)
+printf("\n Thermal efficiency in case 1= %.1f percent",etat*100)
+printf("\n High pressure work = %.1f Btu/lbm",Whp)
+printf("\n Low pressure work = %.1f Btu/lbm",Wlp)
+printf("\n Net work = %.1f Btu/lbm",Wnet)
diff --git a/2735/CH15/EX15.6/Ex15_6.sce b/2735/CH15/EX15.6/Ex15_6.sce new file mode 100755 index 000000000..40d90881c --- /dev/null +++ b/2735/CH15/EX15.6/Ex15_6.sce @@ -0,0 +1,25 @@ +clc
+clear
+//Initialization of variables
+p2=600 //psia
+p1=44 //psia
+te=486.21 //F
+tb=273.1 //F
+J=778.16
+p3=0.25 //psia
+//calculations
+hc=241.9
+hj=834.6
+y=1-0.805
+v1=0.0172
+v2=0.016
+ha=28.06
+hd=hc+v1*(p2-p1)*144/J
+hb=ha+v2*(p1-p3)*144/J
+hh=1374
+Qa=hh-hd
+Qr=(ha-hj)*(1-y)
+etat=(Qa+Qr)/Qa
+//results
+printf("thermal efficiency = %.1f percent",etat*100)
+
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