办公建筑天棚辐射+新风系统舒适度的模拟初探

天棚辐射+新风系统是办公建筑中常用的一种温湿度独立系统。对地处北京地区的采用了天棚辐射+新风的办公建筑中某一大开间区域的夏季设计工况进行CFD建模,模拟天棚、新风系统承担不同冷负荷比例时室内工作区域的温湿度场、舒适度等情况。模拟结果显示,在该大开间的设计工况下,并不是辐射系统承担的比例越大越好,而是当辐射系统承担冷负荷比例为50%时,系统的供冷效果最好。此结论仅为模拟结果,实际情况还有待验证。

Initial Simulation of Office Building' s Comfort Using Ceiling Radiant and New-air System

In office building, ceiling radiant and new -air system is always applied as a sort of independent control system for temperature and humidity. By modeling the open office using ceiling radiant and new-air system in Beijing, this paper provides some simulation results of indoor working area ' s temperature-humidity fields and PMV fields, which show that in the design condition, the best cooling effort can be attained not when the radiant system' s load is biggest, but when the radiant system' s load percentage is 50%. This result is only attained by simulating, and should be tested in reality.