强化对流式架空地板辐射供暖房间热环境特征研究
Thermal environment characteristics of an enhanced-convection overhead radiant floor heating room
摘要：
针对提出的强化对流式架空地板辐射供暖末端系统，采用数值模拟方法研究了地板表面温度与热流分布，以及供暖房间热环境特征，通过实验研究分析、验证了数值计算模型的可靠性。结果表明：强化对流式架空地板表面温度与热流分布规律主要受地板开孔数量、形状、位置等因素影响；盘管运行水温升高10 ℃时，地板表面温度升高2 ℃左右，室内平均温度升高2.8 ℃左右，架空地板表面热流密度增大约15 W/m2；盘管间距每减小100 mm，室内平均温度升高1.8 ℃左右；房间中间热源区域风速较小，在0.11~0.18 m/s之间，满足工作区人员舒适性要求。
Abstract：
For the proposed enhanced-convection overhead radiant floor heating system, studies the surface temperature and heat flux distribution of the floor and the thermal environment characteristics of the heating room by numerical simulation, and verifies the reliability of the model by the experimental study. The results show that the surface temperature and heat flux distribution law of the enhanced-convection overhead floor are mainly affected by the number, shape and position of floor holes. When the water temperature of the coil is increased by 10 ℃, the surface temperature of the floor is increased by about 2 ℃, the average indoor temperature is increased by about 2.8 ℃, and the surface heat flux density of the overhead floor is increased by about 15 W/m2. When the coil spacing is reduced by 100 mm, the average indoor temperature is increased by about 1.8 ℃. The wind speed of the heat source activity area in the middle of the room is 0.11 to 0.18 m/s, which can meet the comfort demand of the workplace occupants.
Keywords:enhanced-convection, overhead radiant floor heating, heat dissipation characteristic, indoor thermal environment, temperature distribution, heat flux distribution