通过建筑围护结构的热流量直接影响建筑热调节的能量使用。与墙芯相邻的传统外部覆层（如乙烯基墙板、砖饰面）后面的通风空腔会导致热流进入或离开室内空间。因此，本文研究了通风空气空间对通过壁芯的热通量变化的影响。开发了稳态条件下的数值程序，并用文献中的热箱试验进行了验证。进行了几次模拟，并讨论了气隙中的换气率（0至1000 1/h）、季节变化（夏季和冬季条件）和外部包层类型（砖和乙烯基壁板）对穿过墙芯的热流的影响。 结果表明，通风空间对整个组件的热性能有影响。引文:2021篇虚拟会议论文

The amount of heat flux passing through the building envelope directly affects the energy use for the thermal conditioning of the building. The ventilatedcavity behind the traditional external claddings (e.g., vinyl siding, brick veneer) adjacent to the wall core can contribute to the magnitude of the heat fluxentering or leaving the indoor space. Thus, the effect of the ventilated air-spaces on the variation of the heat flux passing the wall core is investigated in thisstudy. A numerical code is developed for the steady-state condition and verified with available in the literature hot box tests. Several simulations areperformed, and the effects of the air change rate in the air gap (0 to 1000 1/h), seasonal variation (summer and winter conditions), and external claddingtype (brick and vinyl siding) on the heat flux passing through the wall core are discussed. The results show that the ventilated air-spaces have an impact onthe thermal performance of the entire assembly.