摘要
当前地板辐射供冷系统的计算选型对送风系统的形式考虑不足,经常出现无法满足供冷需求或冷量浪费的现象,对人体的热舒适性影响很大。为解决此问题,建立了置换送风系统、层式送风系统和混合送风系统分别与地板辐射供冷系统组合的三维房间模型,计算室内环境的温度和空气流速,并对三种不同送风系统与地板辐射供冷系统结合的模型进行对比分析。结果表明:置换送风系统条件下,复合系统提供的冷量主要用于降低房间低层空气的温度,会产生较大的垂直温差,人员上部的热不舒适风险较大;层式送风系统和混合送风系统的下降重力流作用对热舒适有较大的影响;层式送风系统在热环境营造方面,有一定程度的供冷优势。
The calculation and selection of the current floor radiation cooling system does not take into account the form of the air supply system.It often fails to meet the cooling demand or waste of cooling capacity,which has a great impact on the thermal comfort of human body.To solve this problem,In this paper,a three-dimensional room model is established for the combination of displacement air supply system,layer air supply system and mixed air supply system with floor radiant cooling system respectively and the models combining three different air supply systems with floor radiant cooling system are compared and analyzed.The results show that under the condition of displacement air supply system,the cooling capacity provided by the composite system is mainly used to reduce the temperature of the air in the lower layer of the room,which will result in a large vertical temperature difference and a greater risk of thermal discomfort in the upper part of the personnel.The drop gravity flow of the layer air supply system and the mixed air supply system has a great influence on the thermal comfort.Layer-type air supply system has a certain degree of cooling advantage in thermal environment construction.
作者
赵培文
栗浩
张林华
Zhao Peiwen;Li Hao;Zhang Linhua
出处
《洁净与空调技术》
2021年第3期16-21,共6页
Contamination Control & Air-Conditioning Technology
关键词
地板辐射供冷
模拟计算
送风系统
热舒适性分析
Floor radiant cooling
Simulation calculation
Air supply system
Thermal comfort analysis
