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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 /527/CH2/EX2.9/2_9eaxm.sce | |
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initial commit / add all books
Diffstat (limited to '527/CH2/EX2.9/2_9eaxm.sce')
| -rwxr-xr-x | 527/CH2/EX2.9/2_9eaxm.sce | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/527/CH2/EX2.9/2_9eaxm.sce b/527/CH2/EX2.9/2_9eaxm.sce new file mode 100755 index 000000000..0b245e1a1 --- /dev/null +++ b/527/CH2/EX2.9/2_9eaxm.sce @@ -0,0 +1,45 @@ +//Engineering and Chemical Thermodynamics
+//Example 2.9
+//Page no :65
+
+clear ; clc
+//solution(a)
+
+// Given data:
+P1 = 100000 ; // [N/m^2]
+T1 = 298 ; //[K]
+V1 = 0.1 * 0.1 ; // [m^3]
+T2 = 373 ; // [N]
+P_ext = 100000 ; //[N/m^2]
+k = 50000 ; //[N/m]
+A = 0.1 ; //[m^2]
+
+// Applying ideal gas law we getan quadritic eqn of the form :
+// a * V2^2 + b * V2 + c = 0 where
+a = k / (T2 * A^2) ;
+b = (P_ext / T2) - k * V1 / (A^2 * T2) ;
+c = -P1 * V1 / T1 ;
+V2 = (-b + sqrt ( b^2 - (4*a*c))) / (2 * a) ;
+W = -P_ext * (V2 - V1) - ( k * (V2 - V1)^2)/(2 * A**2);//From eqn E2.9C
+disp(" Example: 2.9 Page no : 65") ;
+printf('\n (a) Work required = %g J \n\n',W);
+
+
+//Solution(b):
+
+//Given data:
+A = 3.355 ;
+B = 0.575 * 10^-3 ;
+D = -0.016 * 10^5 ;
+P1 = 10^5 ; //[N/m^2]
+V1 = 0.01 ; //[m^3]
+R = 8.314 ;
+T1 = 298 ;
+
+n = (P1 * V1) / (R * T1) ;
+function y=f(T),y=R*((A - 1) * T + B/2 * T^2 -D/T)
+endfunction
+del_u = f(373) - f(298) ;
+del_U = n * del_u ;
+Q = del_U - W;
+printf('\n (b).Heat transfered = %.4f J',Q);
\ No newline at end of file |