Unformatted text preview: Fall 2004 ICE Topics: Process Control by Design 10.492 Problem Set 5: Designing some heat exchangers For this problem set, each student should submit individual work. 50,000 lb m h-1 of a refinery alkane stream that can be represented as hexadecane is to be cooled from 455 to 290°F. Rather than pay for cooling utilities, you decide to recover this energy into other streams that need to be heated. You find that fuel oil of “relative density” 0.95 is available at 305°F and 70,000 lb m h-1 , and a large supply of tridecane is available at 210°F, although this must not be heated above 300°F. Perform preliminary sizing of suitable heat exchange equipment. Your response should • be worked in SI units • include a flow diagram sketch with stream flows and temperatures shown • include a table of physical properties and other design information that you used • document and justify the simplifying assumptions you made • list the process variables and classify each as “controlled”, “manipulated”, “disturbance”,...
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- Spring '03
- Heat Transfer, lbm h-1, refinery alkane stream, Dr. Barry S. Johnston