Augmentation of water pool boiling heat transfer using heating surfaces fabricated by multi passive techniques

Presenting the findings of an experimental examination of heat transmission during pool boiling on micro-structure copper heating surfaces modified in various ways, this paper. The microstructured surfaces are fabri-cated using the wire-cutting machine, laser-processed surface technique, and sandpaper. Using pure water as the pool boiling liquid, microstructured surfaces' heat transfer coefficients (HTC) are estimated experimentally. The tests are conducted at atmospheric pressure in a saturated pool boiling state with a heat flux ranging from 50 to 580 kW/m2. The results showed that a maximum improvement of 51-92 % was obtained using composite surface modification technology by forming a microscopic structure on the surface of the heat source.

Automated summary

This paper presents the experimental findings of heat transmission during pool boiling on micro-structured copper heating surfaces modified in different ways. The micro-structured surfaces were created using a wire-cutting machine, laser processing, and sandpaper. Using pure water as the liquid, the heat transfer coefficients of the micro-structured surfaces were estimated through experiments. The results showed that the composite surface modification technology of forming a microscopic structure on the heat source surface achieved a maximum improvement of 51-92%.