Experimental study on heat transfer and flow resistance characteristics of rectangular block graphite heat exchanger

Bin Ren

doi:10.1117/12.3038107

7 August 2024 Experimental study on heat transfer and flow resistance characteristics of rectangular block graphite heat exchanger

Bin Ren

Author Affiliations +

Proceedings Volume 13229, Seventh International Conference on Advanced Electronic Materials, Computers, and Software Engineering (AEMCSE 2024); 1322908 (2024) https://doi.org/10.1117/12.3038107
Event: Seventh International Conference on Advanced Electronic Materials, Computers, and Software Engineering (AEMCSE 2024), 2024, Nanchang, China

Abstract

The rectangular block graphite heat exchanger is one of the three commonly used types of impervious graphite heat exchanger. The heat transfer and flow resistance characteristics of rectangular block graphite heat exchanger were studied experimentally in this work. Firstly, the overall heat transfer coefficient and heat transfer coefficient in transverse holes were obtained. Secondly, the pressure drops in both transverse and longitudinal holes were acquired. Finally, the Nusselt number was fitted as the function of Reynolds number and Prandtl number and the Euler number was fitted as the function of Reynolds number. It is found that the overall heat transfer coefficient increases with the rise of fluid velocity due to the higher heat transfer coefficient in transverse holes. The pressure drop in transverse holes is much greater than that in longitudinal holes because of the baffling flow and reinforcing bar. The Nusselt numbers in transverse and longitudinal holes are respectively about 90% and 110% of the classical value. And the Euler numbers in transverse and longitudinal holes are respectively about eight times and two times of the classical value.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Bin Ren "Experimental study on heat transfer and flow resistance characteristics of rectangular block graphite heat exchanger", Proc. SPIE 13229, Seventh International Conference on Advanced Electronic Materials, Computers, and Software Engineering (AEMCSE 2024), 1322908 (7 August 2024); https://doi.org/10.1117/12.3038107

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KEYWORDS

Graphite

Resistance

Metals

Data acquisition

Design

Baffles

Inspection

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