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本文提出用有限元法计算较复杂型式的传递函数的数值解法,将有限元法和传递函数法结合起来用于较复杂结构的传热过程的分析和计算。下面,以某校太阳房供暖系统的辐射地板传热为例,说明本方法的基本原理。一、问题简述某太阳房供热系统,采用地板辐射供暖形式。其预制混凝土辐射板断面如图1所示。板厚10厘米,内埋1/2″水管,管间距18厘米。辐射板直接铺在室内地面上,板下为一般粘土。供暖时,供水温度在20℃和50℃之间变化(供水温度T_0的变化规律已知),室温
This paper proposes a numerical method to calculate the transfer function of a more complex type using the finite element method, and combines finite element method and transfer function method for the analysis and calculation of the heat transfer process of more complex structures. In the following, the basic principle of this method is described by taking the heat radiation of a radiant floor in a school solar heating system as an example. I. Brief description of the problem A solar house heating system uses floor heating. The section of its precast concrete radiator plate is shown in Figure 1. Plate thickness 10 cm, 1/2" water pipe buried, pipe spacing 18 cm. Radiant plate is laid directly on the floor of the room, under the board is general clay. When heating, the water supply temperature changes between 20 °C and 50 °C (water supply temperature The change law of T_0 is known), room temperature