期刊论文

Simulation Study on Radiant Convection Air Conditioner Using Air Film Cooling Fixed Wall

中文

科学技术与工程

1671-1815

2020

20

4

1613-1618

10.3969/j.issn.1671-1815.2020.04.048

12CY011:湖南省高等学校产业化培育项目 193YXC018:南华大学研究生科研创新项目

本校为第一机构

以基于科恩达曲面诱导送风在固壁辐射板上形成低温气膜的空调末端装置为研究对象,利用数值模拟方法,分析了气膜的形成机理,气膜与固壁辐射板热交换效果,辐射与对流结合的传热方式对室内热环境的影响.模拟结果表明,经降温除湿处理以290 K送出的空气自出风口至固壁辐射板末端形成了一层良好贴附于辐射板的冷气膜.冷气膜使固壁辐射板降温冷却(平均温度为296.32 K),并通过辐射与室内热源进行热交换;气膜卷吸室内空气,同时吸收辐射板部分热量后温度上升,室内人员区域内平均温度维持在299 K左右,且形成了速度为0.2 m/s以内的空气环流.根据有关设计参数标准,该空调装置能够营造一个较为舒适的热环境.

The air conditioning terminal device based on Coanda surface induced air attached to the solid-walled radiant panel was used as the research object.The formation mechanism of the air film,the heat exchange effect between the air film and the solid-walled radiation plate,and the influence of the heat uansfer mode of the combination of radiation and convection on the indoor thermal environment were analyzed by computational fluid dynamics(CFD)numerical simulation.The simulation results show that,with cooling and dehumidification treatment,the air sent out at 290 K formed a cold film from the out...