贴附射流辐射冷顶板复合空调系统的性能研究

通过实验小室进行对比实验,研究采用贴附射流与辐射冷顶板空调系统复合后对室内热环境的影响,以及该复合系统防止辐射冷顶板结露的效果.结果表明,贴附射流与辐射冷顶板复合空调系统相对单纯的辐射冷顶板空调系统而言,复合空调系统的辐射冷顶板降温速度更快,降温幅度更大,在室内热环境方面,其壁面温度及室内空气温湿度更低.可以认为采用贴附射流与辐射冷顶板空调系统复合运行时,能有效降低辐射冷顶板附近空气的露点温度,防止辐射冷顶板结露,且此时辐射冷顶板空调系统的制冷性能更佳.

Investigation on Performance of Radiant Cooling Combined with Wall-attached-jet System

By conducting indoor comparative trial, we studied the impact of the radiant cooling combined with wall-attached-jet system on indoor thermal environment, along with the effect of this combined system on preventing condensation on the ceiling of radiant cooling panel. The result shows that, compared with pure radiant cooling system, those integrated with wall-attached-jet system possess the advantages of a faster cooling speed and a wider cooling magnitude. Meanwhile, considering indoor thermal environment, the composite system has a lower wall temperature, indoor air temperature and humidity. It is concluded that the method of adopting both radiant cooling and wall-attached-jet system simultaneously is more effective in decreasing the dew-point temperature around the radiant cooling panel and protecting the panel from condensation. Moreover, at this time, the refrigeration performance of the radiant cooling panel is greatly enhanced.