地板辐射采暖地面散热量的简化计算方法

New Method of the Floor Surface Total Heat Flux Calculation

对加装了地板辐射采暖设施的空间采用三维稳态湍流模型,进行空气流动和传热特性的数值研究,并在与实验数据相比较的基础上,提出了一个便于实施计算的地板表面散热量的简化计算方法。提出的简化计算方法的思路即是对原计算公式中难以确定的房间内非加热表面的面积权重平均温度值Tp,用室温的修正量来代替。研究结果表明,数值结果和实验数据吻合良好,经计算,修正量C可取平均值2.18。

Velocity fields and temperature fields are numerically computed using a steady turbulent mathematical model for the radiant floor heating system, and the new method of the simplified calculation for the floor surface total heat flux is presented by comparing the numerical results with the experimental results. The method adopted here is that the average temperature of all non -heated walls in the original equation is replaced by the modified air temperature. The results show that the numerical results well agree with the experimental data, and the correction quantity of the air temperature is 2.18.