送风与辐射组合末端供冷舒适性与均匀性研究

发布时间：2019-05-23 02:44

【摘要】：利用CFD仿真技术,对卧式明装风机盘管与辐射地板的空调末端组合进行了供冷模拟研究,分析了风机盘管送风状态、辐射末端表面温度等参数对室内温湿度环境、均匀度及舒适性的影响规律。模拟结果表明:送风与地板辐射末端组合在保证室内符合国家标准的舒适度要求时,能维持较好的热环境均匀度;送风风速不宜过大,否则会造成吹风感强烈;为防止结露和保证舒适性,送风相对湿度要低于70%;送风温度增加导致室内温度增加幅度较大,地板表面温度增加导致室内温度增加幅度较小,即室内温度对送风温度变化更加敏感;当地板表面温度增加时,室内温度和相对湿度的均匀性得到改善,舒适性提高,且结露风险大大降低,因此在满足舒适性要求的情况下,建议适当增加地板表面温度。
[Abstract]:By using CFD simulation technology, the cooling simulation of the air conditioning end combination of horizontal open installed fan coil and radiation floor is carried out, and the indoor temperature and humidity environment are analyzed by analyzing the air supply state of fan coil and the surface temperature of radiation end. The influence law of uniformity and comfort. The simulation results show that the combination of air supply and floor radiation can maintain a good uniformity of thermal environment when the air supply and floor radiation end combination ensure that the indoor comfort requirements meet the requirements of national standards, and the wind speed of air supply should not be too large, otherwise it will cause a strong sense of blowing. In order to prevent condensation and ensure comfort, the relative humidity of air supply should be less than 70%. The increase of air supply temperature leads to a large increase in indoor temperature, and the increase of floor surface temperature leads to a small increase in indoor temperature, that is to say, indoor temperature is more sensitive to the change of air supply temperature. When the surface temperature of the floor increases, the uniformity of indoor temperature and relative humidity is improved, the comfort is improved, and the risk of condensation is greatly reduced. Therefore, under the condition of meeting the requirements of comfort, it is suggested that the surface temperature of the floor should be increased appropriately.
【作者单位】：合肥通用机械研究院;合肥通用环境控制技术有限责任公司;
【基金】：合肥通用机械研究院青年科技基金项目(2016010476)资助
【分类号】：TU831

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