太阳能平板型吸附床强化传热的分析

通过对太阳能平板型吸附床内温度分布的计算，分析了吸附床中嵌入金属助片和吸附剂（活性炭）中掺入铜粉等提高其导热系数的强化传热 方法的效果，认为当肋片的间距在6cm左右或增大吸附剂的导热系数到0．4－0.6W/(m.℃）时，吸附床内厚度方向的温度分布近乎直线，温度梯度较小，同时，胁片的热容对吸附床的整体温度的提高有很大影响。

ANALYSIS OF HEAT TRANSFER ENHANCEMENT WITHIN SOLAR-POWERED FLAT PLATE ADSORBER

The temperature distribution within solar flat plate adsorber is calculated,the effects of different heat transfer enhancement methods,such as embedding ribs within adsorber or mixing copper foam,etc,are analyzed.It is shown that the temperature distribution in the thickness of adsorber is almost linear and the temperature gradient is smaller when the distance between two ribs is less than 6cm or the heat transfer coefficient of adsorber is in the range from 0.4W/(mK)to 0.6W/(mK).Meanwhile,the specific heat of ribs will also affect the temperature in the adsorber strongly.