上海交通大学学报(自然版) ›› 2013, Vol. 47 ›› Issue (08): 1275-1281.

• 一般工业技术 • 上一篇    下一篇

高温供冷相变蓄冷材料的制备及蓄冷性能

王晓霖,翟晓强,王恬,席丽霞   

  1. (上海交通大学 机械与动力工程学院, 上海 200240)
     
  • 收稿日期:2012-07-05 出版日期:2013-08-29 发布日期:2013-08-29
  • 基金资助:

    国家自然科学基金资助项目(51276114)

Preparation and Performance of Cold Storage Phase Change Material for High Temperature Cooling Application

WANG Xiaolin,ZHAI Xiaoqiang,WANG Tian,XI Lixia
  

  1. (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2012-07-05 Online:2013-08-29 Published:2013-08-29

摘要:

对高温供冷用相变蓄冷材料进行配制,并对其热物性及蓄\释冷性能进行分析.分析测试了癸酸月桂酸二元体系的低共熔点,以及不同种类添加剂的摩尔分数对体系相变特性的影响.建立蓄冷球模型,对蓄\释冷过程中材料温度、蓄\释冷量、蓄\释冷速率的变化规律进行分析;使用自制相变材料灌装蓄冷球,进行蓄冷、释冷性能实验.结果表明:以摩尔比例70∶30的癸酸、月桂酸混合物为基液,摩尔分数0.08的油酸为添加剂,制备出蓄冷材料的相变温度约15 ℃,相变潜热为114.1 kJ/kg,蓄冷球蓄冷、释冷过程稳定,单球蓄冷总量为17.67 kJ,能够满足高温供冷空调系统的蓄冷需求.

 
 

关键词: 高温供冷, 癸酸月桂酸, 相变蓄冷, 蓄冷球模型

Abstract:

A cold storage phase change material was prepared for high temperature cooling application. Its thermophysical properties and charging/discharging performance were investigated. The eutectic point and the influence of mole fraction of different additives on phase change characteristics of the capriclauric system were tested. The mathematical model of a package ball was built, through which the variation of temperature, storage capacity and storage rate were analyzed. Experiments were conducted  to study the charging/discharging performance of the package ball. The results show that the capric-lauric acid combination (mole proportion is 70∶30) adding oleic (mole fraction is 0.08) is considered to be well suited to high temperature cooling application with a phase change temperature of 15 ℃ and a latent heat of 114.1 kJ/kg. The charging and discharging processes are stable with a storage capacity of 17.67 kJ for each ball.
 

Key words:  high temperature cooling application, capriclauric acid, phase change cold storage, model of cold storage ball

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