Keywords
Metallic Microchannel, Two phase flow, Subcooled flow boiling, Heat transfer coefficient
Document Type
Research Paper
Abstract
Experiments in microchannel heat sink were carried that examine the deionized water two-phase boiling heat transfer. The heat sink consisted of a single microchannel having 300μm wide nominal dimensions and 300μm height (hydraulic diameter of 300μm). The heat sink formed of oxygen-free copper with 72mm length and 12mm width. Experimental operation conditions spanned the heat flux (78-800) kW/m2, mass flux (1700 and 2100) kg/m2.s at 31K subcooled inlet temperature. The boiling heat transfer coefficient is measured, and compared with existing correlations. The results show that higher mass flux leads to a higher boiling heat transfer coefficient and the dominants mechanism is convective boiling. In addition, it was found that an existing correlation provides a satisfactory prediction of the heat transfer coefficient.
Recommended Citation
mohammed, Suha and Fayyadh, Ekhlas
(2026)
"Experimental Investigation of Sub-Cooled Flow Boiling in Metallic Microchannel,"
Engineering and Technology Journal: Vol. 37:
Iss.
10, Article 5.
DOI: https://doi.org/10.30684/etj.37.10A.5
DOI
10.30684/etj.37.10A.5
First Page
408
Last Page
415
