3) A single-pass tubular type heat exchanger heats air from 35 C to 80 C. Exhaust gas from DIESEL engine at 350 C is used as heating medium. If the final temperature of exhaust gas leaving the heat exchanger is 140 C, what is the LMTD?

3) A single-pass tubular type heat exchanger heats air from 35 C to 80 C. Exhaust gas from DIESEL engine at 350 C is used as heating medium. If the final temperature of exhaust gas leaving the heat exchanger is 140 C, what is the LMTD?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.

Question

Draw the temperature and compute LMTD for CO-CURRENT and COUNTER-CURRENT flow heat exchanger for number 3 and 4.

3) A single-pass tubular type heat exchanger heats air from 35 C to 80 C. Exhaust gas from
DIESEL engine at 350 C is used as heating medium. If the final temperature of exhaust gas
leaving the heat exchanger is 140 C, what is the LMTD?
4) A single effect water evaporator operating at 125 kPa abs vapor pressure. Motive steam is
available for evaporation at 1.0 MPa with 90 % vapor content, what is the mean
temperature difference?

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