Experimental Study of Heat Transfer in a Heat Exchanger with Diffuser Channels




Experimental studies of heat transfer in a counterflow heat exchanger with diffuser channels in a "tube-in-tube" configuration were carried out. The heat exchanger design allows for operation in two modes: a diffuser-in-diffuser (expanding channels) or a confuser-in-confuser (converging channels). Measurements of heat transfer parameters in both modes showed that, with identical average flow parameters, the heat transfer capacity in the "diffuser-diffuser" configuration at Reynolds numbers in the coolant channels up to 6000 is 30-40% higher than in the "confuser-confuser" configuration.

heat exchanger, heat transfer efficiency, expanding channel, Reynolds number, experiment


Volume 26, issue 8, 2025 year


Экспериментальное исследование теплообмена в теплообменнике с диффузорными каналами

Проведены экспериментальные исследования теплообмена в противоточном теплообменнике с диффузорными каналами в конфигурации "труба в трубе". Конструкция теплообменника позволяет работать в двух режимах: диффузор в диффузоре (расширяющие каналы) или конфузор в конфузоре (сужающие каналы). Проведенные измерения параметров теплообмена в двух режимах показали, что при одинаковых средних параметрах течения мощность теплообмена в конфигурации "диффузор-диффузор" при числах Рейнольдса в каналах теплоносителей до 6000 на 3040% выше, чем в конфигурации "конфузор-конфузор".

теплообменник, эффективность теплообмена, расширяющийся канал, число Рейнольдса, эксперимент.


Volume 26, issue 8, 2025 year



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