STUDY ON SIMPLIFIED CALCULATION METHOD OF HEAT TRANSFER IN PASSIVE HOUSE WITH ATTACHED SUNSPACE

Liu Yanfeng; Tian Shiguo; Zhou Yong; Wang Dengjia

doi:10.19912/j.0254-0096.tynxb.2020-0714

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (4) : 256-263. DOI: 10.19912/j.0254-0096.tynxb.2020-0714

Topics on Key Technologies for Safety of Electrochemical Energy Storage Systems and Echelon Utilization of Decommissioned Power Batteries

STUDY ON SIMPLIFIED CALCULATION METHOD OF HEAT TRANSFER IN PASSIVE HOUSE WITH ATTACHED SUNSPACE

Liu Yanfeng^1,2, Tian Shiguo^1,2, Zhou Yong^1,3, Wang Dengjia^1,2

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Abstract

The heat transfer of the passive house with attached sunspace is affected by both ambient air temperature and solar radiation, resulting in obvious fluctuations in thermal load. The traditional steady-state calculation method is difficult to be applied, and the dynamic method is too complex for engineering design. Therefore this paper uses the periodic response coefficient method to study the quantitative correlation between the structural parameters and the heat transfer of the passive house, and combining the structural parameters, a new simplified calculation method for the heat load of the passive house with attached sunspace was proposed. The results show that the total heat transfer of sunspace is greatly affected by the structural parameters of the party wall, and the heat transfer of the inner door is positively related to the thermal resistance of the party wall, and the heat transfer of the wall is negatively related to the thermal resistance of the wall; Under the same enclosure structure, the change trend of the heat conduction of the party wall and the air temperature between the sunspace and the party wall are consistent for different parameter combinations. Thus, the thermal conductivity variation coefficient and temperature variation coefficient of the attached sunspace are proposed. Based on these parameters, the multivariate regression model between the key structural parameters and the heat transfer is established. The comparison between the simplified calculation method and the measured value showed that the simplified calculation method is more consistent and simplified, the calculation method has high accuracy and can be used in practical engineering design.

Key words

passive solar building / thermal load / regression analysis / attached sunspace / simplify calculations method

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Liu Yanfeng, Tian Shiguo, Zhou Yong, Wang Dengjia. STUDY ON SIMPLIFIED CALCULATION METHOD OF HEAT TRANSFER IN PASSIVE HOUSE WITH ATTACHED SUNSPACE[J]. Acta Energiae Solaris Sinica. 2022, 43(4): 256-263 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0714

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