辐射供冷+贴附射流空调系统房间热湿环境影响因素分析OA

Against the backdrop of the global energy crisis and the pressing demand for building energy efficiency,radiant air-conditioning technology has drawn widespread attention for its advantages in energy savings and thermal comfort.To figure out how three panel positions affect room heat transfer under varying water-supply parameters,an experimental platform integrating a radiant chilled-water loop and an attached-jet ventilation system was established.Temperature,humidity and air velocity were measured,and the indoor environmental fields were further analyzed with CFD simulations.The results show that the ceiling-mounted layout delivers the best temperature uniformity:the vertical temperature difference is reduced by about 46%compared with the single-side wall layout,and the non-uniformity coefficient of air velocity in the occupied zone is only 0.12,markedly enhancing thermal comfort.Raising the supply-water temperature by 2℃increases the average temperature on every measured plane by approximately 1.4℃,whereas increasing the flow rate from 0.33 m3/h to 0.75 m3/h lowers the average temperature by merely 1℃;therefore,supply-water temperature should be prioritized in actual operation.All these three layouts can maintain indoor humidity within the range of 40%-60%comfort band,with the ceiling layout providing the most uniform moisture distribution.