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Numerical Analysis Of Effect Of Shape-stabilized Phase Change Material Plates In A Building Combined With Night Ventilation

机译：夜间通风结合对建筑物中形状稳定相变材料板影响的数值分析

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摘要

Effect of shape-stabilized phase change material (SSPCM) plates combined with night ventilation in summer is investigated numerically. A building in Beijing without active air-conditioning is considered for analysis, which includes SSPCM plates as inner linings of walls and the ceiling. Unsteady simulation is performed using a verified enthalpy model, with time period covering the summer season. Effects of the following factors on room air temperature are investigated: the thermophysical properties of the SSPCM, the thickness of SSPCM plate and air change per hour (ACH) at both nighttime and daytime. The results show that the SSPCM plates could decrease the daily maximum temperature by up to 2 ℃ due to the cool storage at night. The appropriate values for melting temperature, heat of fusion, thermal conductivity and thickness of SSPCM plates need to be considered and calculated according to the climate conditions and building structure. The ACH at night needs to be as high as possible but the ACH at daytime should be controlled.
机译：数值研究了形状稳定的相变材料（SSPCM）板与夏季夜间通风相结合的效果。可以考虑对北京没有主动空调的建筑物进行分析，其中包括SSPCM板作为墙壁和天花板的内衬。使用验证的焓模型执行不稳定的模拟，其时间范围涵盖夏季。研究了以下因素对室内空气温度的影响：SSPCM的热物理性质，SSPCM板的厚度以及白天和黑夜的每小时换气量（ACH）。结果表明，由于夜间冷藏，SSPCM板可将每日最高温度降低2℃。需要根据气候条件和建筑结构来考虑和计算熔融温度，熔化热，导热系数和SSPCM板厚度的适当值。夜间的ACH应尽可能高，但白天应控制。

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