摘要
可再生能源的高效利用是降低建筑能耗的有效方法。将相变储能墙与太阳能热风相结合,可改善太阳能热风采暖的不稳定性,从而提高太阳能的利用效率。通过试验和ANSYS模拟软件对复合系统的分析,确定相变储能墙体的储热特性和合理用量,研究复合采暖系统的室温变化和传热规律,分析相变储能墙对采暖系统的贡献率。结果表明：与未采暖房间相比,复合采暖系统可以使室内平均温度提高7-15℃,该复合采暖系统具有一定的应用前景;当太阳能空气集热器的送风口温度在37-77℃时,相变材料能够充分利用,相变墙整体的相变比例约为40%,从线性回归比例看,复合采暖效果要比太阳能热风采暖效果好。
Using renewable energy is one of the effective methods to reduce building energy consumption. In this paper, a solar hot air heating system is combined with phase change material wall with an aim to improve the efficiency of solar heating. With such a heating system, the instability due to intermittency of solar energy and the efficiency of solar energy utilisation could be improved. Experimental testing and numerical modelling in the ANSYS environment have been carried out on the integrated heating system. The characteristics of phase change material wall and the percentage of the phase change materials in the wall are determined and the contribution of the phase change material is obtained. The results indicate that, compared with the non-heating case, the combined heating system increases the indoor temperature by 7 ℃ to 15 ℃ on average. When the air inlet temperature of the collector is between 37 ℃ and 77 ℃, the phase change material is fully utilised with approximately 40% of the wall performing phase change function. Analysis of the results suggests the combined heating system be better than solar air heating only system.
出处
《储能科学与技术》
CAS
2015年第6期632-637,共6页
Energy Storage Science and Technology
基金
国家自然科学基金(51308352)
辽宁省高校创新团队(LT2013013)
沈阳市科技局(F13-160-9-00)项目
关键词
相变储能墙
节能率
采暖系统
模拟分析
phase change wall
energy saving effect
heating system
simulation analysis
作者简介
第一作者：刘馨（1983-），女，博士，讲师，主要研究建筑热过程、室内空气保障技术、相变储能及建筑节能技术等，E—mail：girl_liuxin@163．com；
通讯联系人：冯国会，教授，博士研究生导师，主要研究方向有：建筑节能、相变储能技术及应用、室内空气品质保障技术等，E-mail：Fengguohui888@163．com。
