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            暖通空調雜志社>期刊目次>2021年>第5期

            半室外空間內部水體對熱濕環境的影響及熱舒適性評價研究

            Influence of internal water in semi-outdoor space on thermal and humid environment and thermal comfort evaluation

            劉沛 楊彩青 王慷 張杰
            北京市建筑設計研究院有限公司

            摘要:

            建立了一套研究半室外空間內部水體對熱濕環境影響及舒適性評價的方法,并以某實際工程為研究對象,采用該方法對半室外空間內部河道水體對熱濕環境的影響進行了模擬分析。模擬結果發現,自然通風工況下該環境在夏季通風設計條件下部分區域的適應性平均熱感覺指數可達到Ⅱ級舒適性要求,但是在河岸的角落出現熱舒適性較差、僅達Ⅲ級舒適性的區域。對此,建議在熱舒適性較差的區域增設局部通風設施(例如風扇等)來增強該區域的氣流流動,從而實現改善局部熱舒適性的目標。研究認為,將河岸角落區域的氣流流速增強到0.6 m/s以上時,熱舒適性指標即可以達到Ⅱ級要求。

            關鍵詞:半室外空間,計算流體力學(CFD),熱濕環境,舒適性指標,適應性平均熱感覺指數

            Abstract:

            Establishes a set of methods to study the influence of internal water in semi-outdoor space on the thermal and humid environment and the thermal comfort evaluation. Taking an actual project as the research object, adopts the method to simulate the influence of river water in semi-outdoor space on the thermal and humid environment. The simulation results show that under the natural ventilation condition, the adaptive predicted mean vote of the environment under the summer ventilation design condition can meet the level Ⅱ comfort requirements in some areas, but the area with poor thermal comfort only reaching level Ⅲ comfort appears in the corner of the river bank. Suggests that local ventilation facilities (such as fans, etc.) should be added in the area with poor thermal comfort to enhance the airflow in this area, so as to achieve the goal of improving local thermal comfort. Considers that when the airflow velocity in the corner area of the river bank is increased to more than 0.6 m/s, the thermal comfort index can reach the level Ⅱ requirements.

            Keywords:semi-outdoorspace,computationalfluiddynamics(CFD),thermalandhumidenvironment,comfortindex,adaptivepredictedmeanvote(aPMV)

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