隨著近年永續性發展的趨勢，增加了建築聲學性能的設計需求。對於熱濕氣候區的建築室內空間而言，有效應用複合式通風手法能降低空調設備耗能，卻必須檢討藉由通風口侵入室內空間的外部噪音。本文以位於海南島之1000席大型表演廳為研究案例，同步分析浮力通風塔應用於空調使用時之排熱效果，與其衍生之隔音問題，進一步探討兩者之互動關係。利用scSTREAM分析軟體，以CFD方法，進行廳堂室內空間的流場數值模擬，並利用BEM方法計算外部噪音侵入廳堂內部的音壓大小，針對排風口開口部面積大小的變因，探討自然通風與浮力通風塔，應用於對背景噪音環境要求較高的建築室內空間之可行性。

As the trend of building sustainability in recent years, the design requirements of architectural acoustics performance increased. Effective natural or hybrid ventilation system is helpful to reduce air-conditioning energy consumption. On the other hand, natural ventilation strategies challenged the common practice in acoustic design. Case studies on building acoustic solutions associated with natural ventilation were reviewed with a large auditorium that induces heat evacuation. Carry out the hall interior space flow field simulation by analysis using CFD method. And calculate the external noise sound pressure by BEM method. Discuss the feasibility of applying natural ventilation strategies and buoyancy ventilation tower in an auditorium space, with the variation of the size of the exhaust opening.

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