球磨滑石粉对作为相变材料的石蜡的潜热储能性能及充热-放热周期的影响

Effect of Ball-Milled Steatite Powder on the Latent Heat Energy Storage Properties and Heat Charging-Discharging Periods of Paraffin Wax as Phase Change Material.

作者信息

Kannaiyan Sathiyalingam, Huang Song-Jeng, Rathnaraj David, Srinivasan S A

机构信息

Department of Mechanical Engineering, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Rd, Da'an District, Taipei 10607, Taiwan.

Department of Aeronautical Engineering, Sri Ramakrishna Engineering College, Coimbatore 641022, India.

出版信息

Micromachines (Basel). 2022 Sep 2;13(9):1456. doi: 10.3390/mi13091456.

DOI:10.3390/mi13091456

PMID:36144078

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9502487/

Abstract

Phase change materials (PCMs) serve as an advantage in thermal energy storage systems utilizing the available sensible and latent heat. The PCMs absorb the thermal energy during the charging process and release it into the environment during the discharging process. Steatite is low cost and eco-friendly, with a thermal stability up to 1000 °C, and it is abundantly available in nature. This study investigates the steatite-paraffin wax-based PCM and the effect on the cyclic loads using a horizontal triplex-tube latent heat energy storage system. The thermal conductivity value of the milled steatite-based PCM composite was 7.7% higher than pure PCM. The PCM with the ball-milled steatite-fabricated composite exhibited better discharging characteristics, increasing the discharge time by 50% more than that of the pure paraffin wax. Moreover, the milled steatite-based PCM outperformed that incorporated with non-milled steatite with paraffin.

摘要

相变材料（PCM）在利用可用显热和潜热的热能存储系统中具有优势。PCM在充电过程中吸收热能，并在放电过程中将其释放到环境中。滑石价廉且环保，热稳定性高达1000°C，在自然界中储量丰富。本研究使用卧式三管潜热储能系统研究了滑石-石蜡基PCM及其对循环载荷的影响。研磨后的滑石基PCM复合材料的热导率值比纯PCM高7.7%。采用球磨滑石制备的复合材料的PCM表现出更好的放电特性，放电时间比纯石蜡增加了50%以上。此外，研磨后的滑石基PCM比未研磨的滑石与石蜡混合的PCM表现更优。