储能科学与技术 ›› 2017, Vol. 6 ›› Issue (2): 302-306.doi: 10.12028/j.issn.2095-4239.2017.0002

• 研究开发 • 上一篇    下一篇

相变材料热性能及其在室内被动式储能系统的简易计算

崔  艳  琦   

  1. 仲恺农业工程学院城市建设学院,广东 广州 510225
  • 收稿日期:2017-01-04 修回日期:2017-01-17 出版日期:2017-03-01 发布日期:2017-03-01
  • 通讯作者: 崔艳琦(1979—),女,副教授,研究方向为绿色建筑节能技术,E-mail:1328313514@qq.com。

Thermal properties of phase change materials (PCM) and their concise calculations for passive storage applications in buildings#br#

CUI Yanqi   

  1. College of Urban Construction, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, China
  • Received:2017-01-04 Revised:2017-01-17 Online:2017-03-01 Published:2017-03-01

摘要: 相变材料具有固定的相变温度,当环境温度高于或低于相变温度时,自动发生熔化或凝固,同时吸收或释出潜热,在熔化和凝固过程中,保持温度恒定。相变材料这种独特的性能,得到了全世界各国政府和研究机构的高度重视。本文综述了相变材料的相变潜热、相变温度及传热系数等主要热性能,介绍了相变材料在室内应用的被动式基本结构模型,并参照前人研究结果,简易计算出相变材料在室内被动式控温需要相变材料的数量,为相变材料在室内等领域的推广应用和效益评估提供参考。

关键词: 相变材料, 潜热, 相变温度, 建筑节能

Abstract: A phase-change material (PCM) is a substance that melts and solidifies at a certain temperature range with little change of temperature, whilst releasing/absorbing a certain amount of heat called latent heat. Because of some unique properties, PCMs have become a research focus in recent years. This paper provides a brief review on some important thermal properties and behavior of PCM including latent heat, phase transition temperature and heat transfer coefficient associated with the use of PCMs. A basic model of PCM is then introduced for assessing the use of PCM in buildings. Energy saving due to the use of PCM in indoor applications is then analyzed and a concise method for the calculation of the amount of PCM for interior temperature control is presented.

Key words: phase change material, latent heat, phase-transition temperature, building energy efficiency