CHEMICAL ENERGY BALANCE - EXAMPLE 11.2 : Calculate the cooling duty, H required to condense and cool acetone from 100 degree Celsius to 25 degree Celsius at atmospheric pressure. The heat of vaporization for acetone at its normal boiling point is 30.2 kJ / mol. The boiling point of acetone at atmospheric pressure is 56 degree Celsius. The flowrate of acetone through the condenser is 100 mol / s = N. Value of sensible heat needed to increase the temperature of acetone in liquid form from 25 to 56 degree Celsius is 4.06 kJ / mol. Value of sensible heat needed to increase the temperature of acetone in vapor form from 56 to 100 degree Celsius is 3.82 kJ / mol. Unit of H is kJ / s.
Answer Posted / kangchuentat
CHEMICAL ENERGY BALANCE - ANSWER 11.2 : In the same state, total heat changes in heating = total heat changes in cooling for acetone. H = N ( total heat of sensible + heat of vaporization) = 100 (mol / s) [ (30.2) + (4.06 + 3.82) ] (kJ / mol) = 3808 kJ / s. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is % of piping & equipment cost for a chemical plant having batch process?
Hi, Please give me chemical engineering paper for IOCL exam for entire written exam, GD and personel interview model questions to my email id. (chemistnathan@rediffmail.com) Rgds, Ragu
Please describe tar, asphalt and bitumine
What are the different characteristics that can affect the flow of bulk solids and how?
What chemical is used to expand air bags in such a short amount of time?
What is the ignition temp. of Alluminium,Coper&Iron.
What is the method involved in analyzing powders for composition?
For a heat exchanger, will the overall heat transfer coefficient increase along with an increase in lmtd (log mean temperature difference) around the unit?
Oil and fat containing food items are flushed with nitrogen. Why?
What does the catalytic converter on an automobile really do?
What is a good method of steam tracing large vessels?
What is the symbol of sodium?
Why is respiration considered as an exothermic reaction? Explain?
Explain how can you estimate the efficiency of a pump?
What is a good method of analyzing powders for composition?