本文报道了混合通风系统在高层建筑中的应用，特别是对建筑室内环境以及该系统对热负荷变化的影响。混合通风系统在运行空调系统时执行自然通风。系统应用的数量不断增加，但运行方式对热负荷的变化估计不准确，导致节能效果的可靠性降低。 通过混合通风系统，由于自然通风引起的通风，热环境可能会变得更糟。当通风孔位于建筑物的被占用区域时，考虑室内热环境尤为重要。本文介绍了混合通风系统在日本东京某超高层建筑中的应用。对室内环境的测量评价进行了讨论，结果表明热环境问题不大。 热质量的影响对于热负荷估算非常重要，尤其是在利用自然通风的“夜间净化”时。热负荷的变化是通过模拟来估计的，模拟通过再现板坯温度的变化以及估计的室内产热量和室外条件来验证。根据评估，每年的冷负荷减少约为21%。引文:伊利诺伊州芝加哥ASHRAE Transactions第118卷第1部分

This paper reports the application of a hybrid ventilation system to a high-rise building, especially on the indoor environment in the building and the effects of the system on the variation of thermal load. The hybrid ventilation system executes natural ventilation while operating air-conditioning systems. The number of the system applications has been increasing, but the change of thermal load by the operation method is not estimated precisely, which leads to less reliability in energy conservation effect. By the hybrid ventilation system, the thermal environment may become worse with the draft caused by natural ventilation. It is especially important to consider indoor thermal environment when ventilation openings are located in occupied zone of the building. In this paper, hybrid ventilation system applied to a super high-rise building in Tokyo, Japan is presented. The evaluation on indoor environment by measurement is discussed, which shows little problem on thermal environment. The effect of thermal mass is important for thermal load estimation, especially when utilizing "night purge" of natural ventilation. The change of thermal load is estimated by the simulation validated by the reproduction of the shift in slab temperature with estimated indoor heat generation and outdoor condition. The annual cooling load reduction is evaluated to be about 21%.