The effect of the heat flux of the vertically installed lower tube on the local heat transfer of the horizontally installed upper tube is experimentally investigated. For the experiment, two stainless steel tubes with a diameter of 19mm and saturated water at atmospheric pressure are used. The center of the upper tube, where the flow generated from the lower tube intensively acts, is able to observe a distinct heat transfer improvement effect compared to the nearby locations. This improvement effect is evident when the upper tube heat flux is low and the lower tube heat flux is large. However, when the heat flux of the upper tube is greater than 80kW/m², it is confirmed that there is little effect of improving heat transfer by the concentrated flow.

pool boiling, local concentration, tube array, passive heat exchanger.

Received: March 22, 2021;  Accepted: April 23, 2021; Published: June 15, 2021

How to cite this article: Myeong-Gie Kang, Influence of lower concentrated heat source on pool boiling of horizontal tube, JP Journal of Heat and Mass Transfer 23(1) (2021), 81-93. DOI: 10.17654/HM023010081

This Open Access Article is Licensed under Creative Commons Attribution 4.0 International License

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