Application of latent heat thermal energy storage in buildings: State-of-the-art and outlook
Application of latent heat thermal energy storage in buildings: State-of-the-art and outlook
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DOI：
10.1016/j.buildenv.2006.07.023
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发表时间：
2007-06
影响因子：
7.4
通讯作者：
Yin-ping Zhang;Guobing Zhou;Kunping Lin;Qunli Zhang;Hongfa Di
中科院分区：
文献类型：
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作者：
Yin-ping Zhang;Guobing Zhou;Kunping Lin;Qunli Zhang;Hongfa Di
潜热储能技术在建筑采暖和制冷领域的应用越来越受到人们的关注。LHTES在建筑物中的应用具有以下优点：（1）能够缩小用电高峰与非高峰负荷之间的差距：（2）由于夜间用电成本是白天的1/3-1/5，因此能够将用电高峰转移到非高峰时段，从而节省运行费用;（3）连续利用太阳能的能力，在白天储存太阳能，并在晚上释放太阳能，特别是通过减少昼夜温度波动从而改善热舒适度而用于冬季的空间加热;（4）能够在夏季通过夜间通风将自然冷量储存起来，并在白天将其释放以降低室温，从而降低空调的冷负荷。本文研究了以前的工作，通过将相变材料（PCM）的建筑围护结构中的热能储存。介绍了相变材料的基本原理、候选相变材料及其热物理性能、相变材料的掺入方法、相变材料在墙体、地板、天花板和窗户等方面的热分析以及相变材料的强化传热。我们表明，适当的PCM和适当的掺入方法与建筑材料，LHTES可以经济有效的加热和冷却建筑物。然而，在LHTES能够可靠地和实际地应用之前，需要解决几个问题。最后，我们对今后的工作提出了一些建议。
Latent heat thermal energy storage (LHTES) is becoming more and more attractive for space heating and cooling of buildings. The application of LHTES in buildings has the following advantages: (1) the ability to narrow the gap between the peak and off-peak loads of electricity demand; (2) the ability to save operative fees by shifting the electrical consumption from peak periods to off-peak periods since the cost of electricity at night is 1/3–1/5 of that during the day; (3) the ability to utilize solar energy continuously, storing solar energy during the day, and releasing it at night, particularly for space heating in winter by reducing diurnal temperature fluctuation thus improving the degree of thermal comfort; (4) the ability to store the natural cooling by ventilation at night in summer and to release it to decrease the room temperature during the day, thus reducing the cooling load of air conditioning. This paper investigates previous work on thermal energy storage by incorporating phase change materials (PCMs) in the building envelope. The basic principle, candidate PCMs and their thermophysical properties, incorporation methods, thermal analyses of the use of PCMs in walls, floor, ceiling and window etc. and heat transfer enhancement are discussed. We show that with suitable PCMs and a suitable incorporation method with building material, LHTES can be economically efficient for heating and cooling buildings. However, several problems need to be tackled before LHTES can reliably and practically be applied. We conclude with some suggestions for future work.