储能科学与技术 ›› 2016, Vol. 5 ›› Issue (4): 539-544.doi: 10.3969/j.issn.2095-4239.2016.04.020

• 研究及进展 • 上一篇    下一篇

低温辐射供暖复合相变墙体热性能分析

郭茶秀1，蔡宏伟2   

  1. 1郑州大学化工与能源学院，河南 郑州 450001；2南昌大学资源环境与化工学院，江西 南昌330029
  • 收稿日期:2015-10-23 修回日期:2015-12-24 出版日期:2016-07-01 发布日期:2016-07-01
  • 通讯作者: 郭茶秀，女（1968—），博士，教授，主要从事太阳能研究与利用，E-mail：guochaxiu@163.com。
  • 作者简介:郭茶秀，女（1968—），博士，教授，主要从事太阳能研究与利用，E-mail：guochaxiu@163.com。
  • 基金资助:
    国家自然科学基金（No.51176173）、河南省科技攻关计划项目（No.162102210001）、河南省教育厅科学技术研究重点项目科技攻关（No.14A480002）。

Thermal properties of composite PCM wallboard in low-temperature hot Water radiant system

GUO Chaxiu 1, CAI Hongwei 2   

  1. 1School of Chemical and Energy Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China; 2School of Resouces, Environment & Chemical Engineering, Nanchang University, Nanchang 330029, Nanchang, China
  • Received:2015-10-23 Revised:2015-12-24 Online:2016-07-01 Published:2016-07-01

PDF

425

被引次数

1

摘要：

低温热水墙体辐射供暖技术因其节能、舒适及对供暖温度（热源品位）要求低等优势而越来越得到广泛应用。在研究相变墙体辐射供暖系统的基础上，针对相变墙体层蓄热效率低的问题，提出采用一种新的复合相变墙体板。并建立相应复合相变墙体的传热模型，利用数值模拟软件对复合相变墙体的蓄放热过程进行分析，对比分析了有复合相变层和没有相变层时室内供暖系统的区别，同时研究了相变温度、相变层厚度等参数对复合相变墙体表面平均温度、表面热流密度的影响，得到了它们对复合相变墙体的传热过程的影响规律。研究结果可为提高供暖系统的舒适度提供理论依据，并为发展低品位能源利用提供技术支持。

关键词: 低温辐射供暖, 复合相变墙体, 模拟分析

Abstract:

Low-temperature hot water radiant system is widely applied due to its energy saving, providing comfortable environment and low heating temperature requirement. Here, based on the research on the phase change material (PCM) wallboard radiant system, a new kind of composite PCM wallboard is put forward, in order to improve the efficiency of energy storage. Heat transfer model of composite PCM wallboard is set up, and then the storage and release energy processes are conducted with the CFD software. The influence of composite PCM on the room environment is compared with that of the wallboard without PCM layer. Moreover, the influences of phase change temperature, the thickness of composite PCM layer on the wallboard surface temperature and heat flux are studied to account for the heat transfer process in the composite PCM wallboard. The results presented here can provide a theoretical fundamental for improving a comfortable heating system, and give a technology support to develop the application of low-grade energy.

Key words: low-temperature hot water radiant system, composite PCM wallboard, simulation