文档介绍：天棚辐射供冷楼板及房间内换热的数值模拟研究

郭放马宏权张志鹏

(丰盛新能源科技股份有限公司,南京 210012)

摘要天棚辐射供暖/供冷技术就是一种实现了低能耗与高舒适度相结合的供暖/供冷方案,本文利用
CFD 方法对天棚辐射供冷方案中楼板内部以及房间内的传热过程进行了数值模拟研究。分析了埋管间距、
冷水温度、管内流速等系统参数对于楼板内部传热的影响。根据模拟结果,埋管排布间距以及系统内冷水
温度都对楼板内的传热有较大的影响,通过提高埋管排布间距和降低冷水供水温度可以有效地提高制冷
量,降低楼板表面温度。采用天棚辐射供冷方案,可以获得非常均匀的室内温度分布,从而很好地满足人
体舒适度要求。
关键词辐射供冷数值模拟 CFD

Numerical Study on the Heat Transfer Process in Ceiling radiant cooling

Fang Guo Hongquan Ma Zhipeng Zhang
(NANJING FULLSHARE ENERGY CO., LTD, Nanjing. JiangSu 210012)

Abstract Ceiling radiant cooling/heating system is an energy application with both low waste and fort
level. In this paper, the heat transfer process in the interior floor and radiant heat transfer inside a single room is
studied by using CFD method. Certain systematic factors, including distance between tubes, cold water
temperature and flow rate in tubes are changed to evaluate their effect on the heat transfer process in the interior
floor. According to the simulation results, cooling capacities can be effectively improved by narrowing the
distances between tubes and reducing the cold water temperature. Uniform temperature distributions, thus good
fort standard, could be achieved by using ceiling radiant cooling system.
Keywords Radiant cooling Numerical simulation CFD
该方案采用辐射的方式直接作用于人体,结合
置换通风系统,可以达到符合人体舒适标准的辐射
0 前言散热与对流散热的比例关系,因此相对于传统的对