HW3 Solutions

HW3 Solutions - 6.5 Based on the process measurements,...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
6.5 Based on the process measurements, there are 5,000 Ib/h more flow for the process leaving the heat exchanger than the feed rate to the heat exchanger; therefore, the material balance for the process fluid does not close. The reason for this discrepancy could be faulty flow sensor readings or possibly a leak of the condensate or steam into the process stream. 6.12 a)Closed b)open c )open Id)closed I 7.3 (a) lliQJ The equations have no solution - theyareparallellines. The rank of the coefficient matrix is only I because the f1 21 detll 2J=0 The rank ofthe augmented matrix is 2 P 2 11 Largestnon zerodet. of II 2 3J isof order2 Thus. although the 2 equations are independent and the number of variables is 2 (the necessary conditions), the sufficient conditions are not met. Xl+2X2~1 X2~ xl+ 2 2 x ~3 ~2 X I (b) X, ~ XI-I)' + (x, -I)' = 0 No; 2 solutions . The equations are independent XI XI +X, = I I I , I \ r I Two solutions exist as can.be seen fTomthe plot hence no unique solution exists.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
7.8 Examine the row of C3Hs. None ofthe concentrations are greater than the desired 50% so 50% is not achieveable by any combination of A, B, or C. Or look at the CH4 row. 7.12
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

HW3 Solutions - 6.5 Based on the process measurements,...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online