Effect of Condensation on the Heat Transfer of a Shell and Tube Heat Exchanger with Use of Combined Heat and Power Generation

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HEIDARY A.; EHTERAM M.A.

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Journal: Modares Mechanical Engineering Year:2020 | Volume:20 | Issue:2 Page(s): 297-310

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Title

Effect of Condensation on the Heat Transfer of a Shell and Tube Heat Exchanger with Use of Combined Heat and Power Generation

Author(s)

HEIDARY A. | EHTERAM M.A. | Issue Writer Certificate

Keywords

Shell and Tube Heat ExchangerQ1

CondensationQ1

Heat TransferQ2

Internal Combustion EngineQ2

Combined Heat and PowerQ2

Abstract

In the present paper, the performance of a Shell and Tube Heat Exchanger in which its cold working fluid is water and its hot working fluid is flue gases from natural gas-fueled Internal Combustion Engine with working power of 15. 4 kW was investigated. At first, with changing temperature and flow rate of inlet water, the performance of heat exchanger in both Condensation and non-Condensation situations was experimentally studied in the laboratory in order to have a criterion for validation of the simulations results in future. By comparing different simulation models in Aspen B-JAC software, the least error simulation model was chosen to do the other costly and impossible analyzes numerically in the laboratory environment. The study of the effect of the tube’ s inner diameter on the heat exchanger’ s performance in Condensation situation showed 5. 4% increase in the Heat Transfer while inner diameter decreases from 7 to 6 mm. The separation of the different Heat Transfer stages showed 26. 4% of the latent Heat Transfer in the maximum discharge experiments for the inner diameter of 6 mm. Finally, the engine/heat exchanger set was assessed as micro Combined Heat and Power and assumed that the heat exchanger is used for providing hot water for a 4-person family house in Tehran and the combustion engine is used for generating electrical power. This set was able to provide hot water during 9 warm months of a year by 1-hour work per day with 29% decrease of fuel consumption in comparison with traditional burners and at the same time, this set provides almost twice the electrical power requirements.

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APA: Copy

HEIDARY, A., & EHTERAM, M.A.. (2020). Effect of Condensation on the Heat Transfer of a Shell and Tube Heat Exchanger with Use of Combined Heat and Power Generation. MODARES MECHANICAL ENGINEERING, 20(2 ), 297-310. SID. https://sid.ir/paper/178296/en

Vancouver: Copy

HEIDARY A., EHTERAM M.A.. Effect of Condensation on the Heat Transfer of a Shell and Tube Heat Exchanger with Use of Combined Heat and Power Generation. MODARES MECHANICAL ENGINEERING[Internet]. 2020;20(2 ):297-310. Available from: https://sid.ir/paper/178296/en

IEEE: Copy

A. HEIDARY, and M.A. EHTERAM, “Effect of Condensation on the Heat Transfer of a Shell and Tube Heat Exchanger with Use of Combined Heat and Power Generation,” MODARES MECHANICAL ENGINEERING, vol. 20, no. 2 , pp. 297–310, 2020, [Online]. Available: https://sid.ir/paper/178296/en

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