Elementary Principles 181

# Elementary Principles 181 - 6.26 a. To increase profits and...

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6- 15 6.26 a. To increase profits and reduce pollution. b. Assume condensation occurs. A=acetone 1 mol @ 90 o C, 1 atm 0.20 mol A( v )/mol 0.80 mol N 2 /mol n 1 mol @ T o C, 1 atm y 1 mol A( v )/mol (sat’d) (1- y 1 ) mol N 2 n 2 l ) For cooling water at 20 o C () *o 10 1210.595 log 20 C 7.11714 2.26824 20 C 184.6 mmHg 20 229.664 AA pp =− =⇒ = + Saturation : yPp y A 11 20 184 6 760 0243 02 ⋅= ⇒ = = > * . .. o C di , so no saturation occurs. For refrigerant at –35 o C 10 1210.595 log 35 C 7.11714 0.89824 35 C 7.61 mmHg 35 229.664 A A −= = + (Note : -35 o C is outside the range of validity of the Antoine equation coefficients in Table B.4. An alternative is to look up the vapor pressure of acetone at that temperature in a handbook. The final result is almost identical.)
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## This note was uploaded on 02/27/2012 for the course CHEMICAL E 312 taught by Professor Cheung during the Fall '11 term at The University of Akron.

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