采暖地板对室内人体热辐射的理论计算模型

在基本假设和"人体柱"模型的基础上,建立采暖地板对室内人体热辐射的理论计算模型.利用该理论模型,对矩形等温地板的采暖辐射特性进行计算分析.结果表明,人体在室内不同位置所受到的热辐射量是不均匀的.在地板中心处,人体所受到的热辐射量最大,而在地板角点处,人体所受到的热辐射量最少.将人体工作和停留时间长的区域靠近地板中心区布置,可提高辐射采暖的能量利用效率;将热媒质从地板周边逐渐向中心盘旋引入,可使地板周边有较高的表面温度,提高室内辐射采暖的均匀性.

Theoretical Calculation Model and Method of the Thermal Radiation from the Heating Floor to Human Body

Based on the assumption that the heating floor radiation agrees with Lambert's cosine law and the outdoor human body could be equivalent to a "human cylinder", the mathematical model and formula to describe the thermal radiation from the floor to human body are established. The thermal radiation from an isothermal heating floor of 8 m×12 m to human body at different positions is calculated by this model and formula. The results show that the thermal radiation from the heating floor is not uniform, the human body receives the largest radiation at the center of the floor, and receives the lowest radiation at the corner. This result implies that main activities would be arranged at the center region of the floor and the heating medium in the floor would be circumvolved and inducted from the edges to the center.