Thermal performance enhancement of micro-grooved aluminum flat plate heat pipes applied in solar collectors

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

1 Scopus Citations
View graph of relations

Author(s)

  • Gong Chen
  • Yong Tang
  • Longhua Duan
  • Heng Tang
  • Guisheng Zhong
  • And 3 others
  • Zhenping Wan
  • Shiwei Zhang
  • Ting Fu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)2234-2242
Journal / PublicationRenewable Energy
Volume146
Online published16 Aug 2019
Publication statusPublished - Feb 2020

Abstract

Micro-grooved aluminum flat plate heat pipes (MFPHPs), fabricated by hot extrusion and subsequent inner surface treatment via chemical corrosion, were developed to improve the thermal efficiency and reduce the costs of solar collectors. Thermal performances of MFPHPs, including temperature distribution, maximum heat transfer capability, and thermal resistance, were experimentally conducted. The effects of treatment time and solution concentration on the thermal performance enhancement of MFPHPs were also investigated. The experimental results show that inner surface treatment can substantially enhance the thermal performance of MFPHPs, and different treatment morphologies of inner surfaces result in differences in thermal performance enhancement. The optimal treatment parameters were determined to be a treatment time of 10 min with a solution concentration of 1.5 moL/l. This resulted in the optimal thermal performance enhancement: an increase of approximately 80% in heat transfer capability and a decrease of more than 44% in thermal resistance, compared to the untreated MFPHP. This study provides a convenient, effective, and low-cost method to enhance the thermal performance of MFPHPs applied in solar collectors.

Research Area(s)

  • Capillary performance, Micro-grooved aluminum flat plate heat pipes, Surface treatment, Thermal performance enhancement

Citation Format(s)

Thermal performance enhancement of micro-grooved aluminum flat plate heat pipes applied in solar collectors. / Chen, Gong; Tang, Yong; Duan, Longhua; Tang, Heng; Zhong, Guisheng; Wan, Zhenping; Zhang, Shiwei; Fu, Ting.

In: Renewable Energy, Vol. 146, 02.2020, p. 2234-2242.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal