Effectiveness of the thermal mass of external walls on residential buildings for part-time part-space heating and cooling using the state-space method
Effectiveness of the thermal mass of external walls on residential buildings for part-time part-space heating and cooling using the state-space method
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DOI：
10.1016/j.enbuild.2019.02.029
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发表时间：
2019-05
影响因子：
6.7
通讯作者：
Jie Deng;R. Yao;Wei Yu;Qiulei Zhang;Baizhan Li
中科院分区：
文献类型：
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作者：
Jie Deng;R. Yao;Wei Yu;Qiulei Zhang;Baizhan Li
高分辨率的时间间隔数值模型能够更准确地分析间歇性使用中的建筑动态热物理过程，而相关专业软件，如EnergyPlus，不兼容不同的时间间隔。本研究旨在研究外墙对典型住宅的部分时间部分空间供暖和制冷操作的热质量有效性。使用状态空间方法开发了典型 3 人住宅公寓的高分辨率模型，并通过 EnergyPlus 的模拟结果进行了验证。然后对模型进行修正，从系统控制的角度计算固定供热和供冷功率下的建筑能源需求，以解释HSCW（夏热冬冷）区域相同推荐U值的热质量在房间工作温度方面的有效性。研究发现，高热质量无助于降低HSCW区域住宅建筑的理想建筑荷载，但与低热质量相比，在实际工程中将改善室内热舒适控制。对于相同热质量下的重质外墙的隔热布置，事实证明，与外保温相比，采用内保温减弱了重质墙体组合物的热质量影响。据推测，外墙成分中的高热质量应暴露在室内空气中，以避免在冷却条件下过热。
A high-resolution time interval numerical model is more accurate to analyze the building dynamic thermophysical processes in the intermittent occupancy, while relevant professional software, such as EnergyPlus, is not compatible with different time intervals. The present study aims to investigate the thermal mass effectiveness of external walls on the part-time part-space operation of heating and cooling of a typical residence. A high-resolution model of a typical 3-occupant residential apartment has been developed using the state-space method and validated by the simulation results from EnergyPlus. The model is then amended to calculate building energy demands with fixed heat and cold supply powers from the perspective of system control, in order to interpret the effectiveness of thermal mass with identical recommendedU-value in theHSCW(Hot Summer and Cold Winter)zone in terms of room operative temperatures. It is found that high thermal mass does not help to reduce ideal building loads in the residential buildings in the HSCW zone, but it will improve indoor thermal comfort control in real engineering compared to low thermal mass. Regarding thermal insulation placements of heavy weight external walls under the same thermal mass, it is evidenced that the adoption of internal insulation weakens the thermal mass impact of the heavy weight wall composition compared to that of external insulation. It is inferred that the high thermal mass in the composition of external walls should be exposed to the indoor air to avoid overheating in the cooling conditions.