Transcription of Heat Exchanger Effectiveness
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1 heat Exchanger Effectiveness ()lmTmTFUATUAQ = =()()()()22112211lnTTTTTTTTTlm = To calculate Q, we need both inlet and outlet temperatures:1T 2T 2T1 TWhat if the outlet temperatures are unknown? calculate the performance of a given heat Exchanger . Faith A. Morrison, Michigan Tech :1. guess outlet temperatures2. calculate Tlm, FT3. calculate Q4. calculate Qfrom energy balance5. compare, adjust, calculate unknown outlet temperatures:This tedious procedure can be simplified by the definition of heat - Exchanger Effectiveness , . Faith A.
Double-pipe or 1-1 Shell-and-Tube Heat Exchangers ©Faith A. Morrison, Michigan Tech U. 8 Final Exam CM 310 November 16, 1998 3. (25 points) Water flowing at a rate of 0.723 kg/s enters the inside of a countercurrent, double-pipe heat exchanger at 300K and
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