Effects of Wall Properties on Temperature-Control Effectiveness of Heating Section in a Thermosiphon Containing PCM Suspensions

Applied Sciences

Chi-Ming Lai¹  Shih-Ming Lin²  Ching-Jenq Ho²  Rong-Horng Chen³ 

[1] Department of Civil Engineering, National Cheng-Kung University, Taiwan, 1, University Road, Tainan City 701, Taiwan;Department of Mechanical Engineering, National Cheng-Kung University, Taiwan, 1, University Road, Tainan City 701, Taiwan;Department of Mechanical and Energy Engineering, National Chiayi University, Taiwan, 300 Syuefu Rd., Chiayi City 600, Taiwan;

关键词: phase-change material;    heat-transfer enhancement;    latent heat;    thermosiphon;   

DOI  :  10.3390/app10186211

来源: DOAJ

【 摘 要 】

This article considers the problem of natural heat transfer in a rectangular thermosiphon to investigate the effects of wall properties (thickness and thermal conductivity) on the heat-transfer characteristics of phase-change-material (PCM) suspension flow. The following parameter ranges were investigated: dimensionless loop-wall thickness, 0–0.5; wall-to-fluid thermal-conductivity ratio, 0.1–100; modified Rayleigh number, 10¹⁰–10¹¹; and volumetric fraction of PCM particles, 0–10%. From numerical simulations via the finite-volume approach, it was found that using a pipe with appropriate wall thickness and thermal conductivity containing PCM suspensions for the heating section of a rectangular thermosiphon can effectively control the maximal temperature.

【 授权许可】

Unknown