开放式辐射吊顶开口型式对制冷量的影响研究

Study on the Influence of Opening Patterns on Cooling Capacity of Open-type Radiant Ceiling Systems

由于制冷量的不足,辐射吊顶系统的应用受到限制,开放式安装有助于提高辐射吊顶系统的制冷量。为此,研究中确定了影响开放式辐射吊顶系统制冷量的2个影响因子:辐射板面积比τ1、辐射板湿外周比τ2。使用仿真模型研究了开放式辐射吊顶的制冷量在辐射板不同开口型式下的变化情况。结果表明:当τ1为0.65时,辐射板单位面积制冷量达到最大,其相较于τ1为0.2和0.8时分别增大了13.6%~19.6%和4.3%~7.1%;当τ2为2.5时制冷量达到最大,τ2为2.5时相较于τ2为1时制冷量增大了14.1%~16.5%。

The application of radiant ceiling systems is limited due to the shortage of cooling capacity.Open-type installation is proven to help improve the cooling capacity of radiant ceiling systems.This paper identifies two influencing factors that affect the cooling capacity of open-type radiant ceiling systems:the radiant panel area ratioτ1 and the radiant panel wet-outer perimeter ratioτ2.Using the simulation model,the cooling capacity of the open-type radiant ceiling is investigated under different opening patterns of the radiant panels.The results show that the cooling capacity per unit area of the radiant plate reaches the maximum whenτ1 is 0.65,which increases by 13.6%~19.6%and 4.3%~7.1%compared toτ1 of 0.2 and 0.8 respectively;The maximum cooling capacity is reached whenτ2 is 2.5 and the cooling capacity increases by 14.1%~16.5%atτ2 of 2.5 compared toτ2 of 1.