Experimental studies of the pool boiling heat transfer enhancement capability and mechanisms of the micro-pillared surfaces on copper substrate. Issue 7 (10th November 2022)

• Record Type: Journal Article
• Authors: Gao, Linsong; Jizu, Lv; Li, Yubai; Li, Yang; Gao, Dongdong; Shi, Lin; Bai, Minli
• Is Part Of: Experimental heat transfer. Volume 35:Issue 7(2022)
• Page Start: 979
• Page End: 992
• Publication Date: 2022-11-10
• Subjects: Micropillared surfaces -- boiling -- bubble dynamic; Heat -- Transmission -- Measurement -- Periodicals; 621.4022
• DOI: 10.1080/08916152.2021.1996486
• Languages: English
• ISSNs: 0891-6152

Abstract

ABSTRACT: Experimental investigations on the pool boiling heat transfer enhancement and mechanisms for micropillared surfaces are performed. Two square micropillared MP 50–50 (Square) and MP 50–450 (Square)) and a circular micropillared MP 50–250 (Circular)) are fabricated on a copper substrate. Experimental results show that bubbles easily nucleate at the sharp corners of the square micropillars and MP 50–50 (Square) improves the capability of the micropillars, which leads to a higher boiling heat transfer performance. The critical heat flux is 151.41 W/cm 2 on MP 50–50 (Square), which is 32% higher than that of a smooth surface (114.78 W/cm 2 ).