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diff --git a/409/CH22/EX22.3/Example22_3.sce b/409/CH22/EX22.3/Example22_3.sce new file mode 100755 index 000000000..75f37e64c --- /dev/null +++ b/409/CH22/EX22.3/Example22_3.sce @@ -0,0 +1,29 @@ +clear ; +clc; +// Example 22.3 +printf('Example 22.3\n\n'); +//page no. 662 +// Solution fig.E22.3a + +//Lets take tank to be system +// Given +T = 600 ; // Temperature of steam -[K] +P = 1000 ;// Pressure of steam -[kPa] + +// Additional data for steam obtained from CD database at T and P +U = 2837.73 ;// Specific internal energy-[kJ/kg] +H = 3109.44 ;// Specific enthalpy -[kJ/kg] +V = 0.271 ;// Specific volume -[cubic metre/kg] + +// Use eqn. 22.6 to get change in specific internal energy,by simplifing it with following assumption: +//1. Change in KE and PE of system = 0, therefore change in total energy = change in internal energy +//2. W = 0,work done by or on the system +//3. Q = 0 , system is well insulated +//4. Change in KE and PE of entering steam = 0 +//5. H_out = 0, no stream exits the system +//6. Ut1 = 0, initially no mass exists in the system + +// By the reduced equation +Ut2 = H ;// Internal energy at final temperature-[kJ/kg] + +printf('\nThe specific internal energy at final temperature is %.2f kJ/kg. \nNow use two properties of the steam (P = %i kPa and Ut2 = %.2f kJ/kg) to find final temperature (T) from steam table. \nFrom steam table we get T = 764 K.',Ut2,P,Ut2);
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