固-固相变蓄热材料在太阳能高温空气集热系统中的应用研究  

Research of solid-solid phase change heat storage material applied in solar collector to produce high temperature air

作　　者：胡仁林[1] 刘振华[1] 赵峰[2] 肖红升[2] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]江苏桑夏太阳能产业有限公司,江苏南通226301

出　　处：《热科学与技术》2012年第3期266-271,共6页Journal of Thermal Science and Technology

摘　　要：为利用太阳能获得稳定持续的高温空气工质,除了有效集热外,还需要解决因太阳辐射强度变化导致输出工质温度波动的问题。在性能优良的太阳能集热系统中采用蓄热技术是解决此问题的有效途径。根据给定的设计目标,研究将固-固相变蓄热材料季戊四醇应用到太阳能集热蓄热一体化的实验装置中。实验结果表明:按集热蓄热一体化思路设计的实验装置,集热单元能够输出最高温度超过220℃的高温空气,蓄热单元能够将高温空气的温度稳定在蓄热材料的相变温度附近。并且随着蓄热管级数的增加,空气出口温度稳定的时间就越长,为利用太阳能获得稳定持续的高温热媒工质奠定了基础。In order to get high temperature air constantly through the utilization of solar energy,the fluctuation of the air outlet temperature caused by the changing solar radiation must also be taken into consideration besides the effective collection of solar energy.Therefore,the adoption of heat storage technology in a solar energy collector of high efficiency is a feasible approach to diminish the temperature fluctuation.The solid-solid phase change material-Pentaerythritol was used as heat storage material in the solar energy collector/storage designed by an integrated method.The experimental results indicate that the maximum air outlet temperature of heating units exceeds 220 ℃ and the heat storage units can stabilize the air temperature around the phase-transition temperature of Pentaerythritol for a short time,which tends to be longer with the increase of the number of heat storage units.The results provide a foundation for the utilization of solar energy collector to get stable and high temperature air constantly through the application of phase change material.

关 键 词：太阳能 高温空气 相变蓄热 

分 类 号：TB34[一般工业技术—材料科学与工程] TK512[动力工程及工程热物理—热能工程]