半室外空间内部水体对热湿环境的影响及热舒适性评价研究

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

建立了一套研究半室外空间内部水体对热湿环境影响及舒适性评价的方法,并以某实际工程为研究对象,采用该方法对半室外空间内部河道水体对热湿环境的影响进行了模拟分析。模拟结果发现,自然通风工况下该环境在夏季通风设计条件下部分区域的适应性平均热感觉指数可达到Ⅱ级舒适性要求,但是在河岸的角落出现热舒适性较差、仅达Ⅲ级舒适性的区域。对此,建议在热舒适性较差的区域增设局部通风设施(例如风扇等)来增强该区域的气流流动,从而实现改善局部热舒适性的目标。研究认为,将河岸角落区域的气流流速增强到0.6 m/s以上时,热舒适性指标即可以达到Ⅱ级要求。

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 levelⅡcomfort requirements in some areas,but the area with poor thermal comfort only reaching levelⅢcomfort 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 levelⅡrequirements.