落地窗对热风供暖房间室内热环境的影响
Impact of French windows on indoor thermal environment in warm air heating rooms
摘要：
热空气上浮使得供暖房间的温度梯度较大，对人体热舒适和热风能量利用率都产生了不利影响。在具有大面积落地窗的房间内，近窗处空气通过对流换热被冷却后下沉，使得温度梯度大的问题尤为严重。在人工气候室对这类房间的热风供暖效果进行了实测，分析比较了不同送风参数时，贴附和非贴附射流送风形成的室内温度、气流和热舒适指标的空间分布特征。指出混合通风供暖房间的热舒适满意度不随着送风参数单调改善，存在着最佳送风参数。
Abstract：
Warm air floating upward leads to the large temperature gradient in heating room, which is unfavorable for both the thermal comfort of occupants and energy utilization of warm air. In the rooms with large area of French windows, the air near the windows is cooled by convective heat transfer and then sinks, which causes a larger temperature gradient. Tests the warm air heating effect of this kind of room in the environmental chamber, and analyses the space distribution characteristics of indoor temperature, air flow and thermal comfort index with air supply ways of roof-attachment jet and non-roof-attachment jet under different air supply parameters. Indicates that thermal comfort satisfaction in the mixed ventilation heating room does not monotonically change with the variation of air supply parameter, and the optimal parameter can be obtained.
Keywords:warm air heating, temperature gradient, roof-attachment jet, non-roof-attachment jet, French window