缝隙对体育馆室内空调供暖热环境的影响研究  

Research on the Influence of Cold Air Infiltration on Indoor Air Conditioning Heating Thermal Environment of Sports Training Hall

作　　者：李彬 张录陆 Li Bin;Zhang Lulu

机构地区：[1]山东建筑大学热能工程学院

出　　处：《洁净与空调技术》2019年第4期29-33,共5页Contamination Control & Air-Conditioning Technology

摘　　要：通过CFD的方法,模拟对比了有无冷风渗透时室内热环境情况。将每个门窗缝隙简化为门窗上部一条缝隙进行冷风渗透,渗透的风量不变;这样设置不仅有利于减少网格数使计算可以正常进行,还可以有效减少模型的误差增强网格质量。通过模拟对比发现:冷风渗透可以降低室内平均温度,尤其靠近渗透处温降明显;影响室内温度梯度,使温度梯度明显加大;影响靠窗侧空调作用区域的热环境分布,温度梯度明显小于靠右侧内墙的空调作用温度梯度;冷风渗透可以影响室内风速场分布,在靠近冷风渗透处引起了烟囱效应,加强了空气的流动;影响了靠窗侧空调作用的速度场,部分热量沿窗侧上升速度加大,导致了送入人员活动区的热量减少。增加保温、加设空气帘可以有效地减小冷风渗透的影响,降低空调的能耗。In this paper,the CFD method is used to simulate and compare the indoor thermal environment with or without cold air infiltration.Each window slit is simplified into a gap in the upper part of the window for cold air infiltration,and the amount of air permeating is constant;this setting not only helps to reduce the number of grids,so that the calculation can be performed normally,and can effectively reduce the error of the model to enhance the grid quality.Through simulation comparison,it is found that cold air infiltration can reduce the indoor average temperature,especially the temperature drop near the infiltration;affect the indoor temperature gradient,Increase the temperature gradient apparently;affect the thermal environment distribution of the window side air conditioning effect area,the temperature gradient is obvious It is smaller than the air conditioning temperature gradient on the right inner wall;cold air infiltration can affect the indoor wind speed field distribution,causing the chimney effect near the cold air infiltration,enhancing the air flow;affecting the speed field of the window side air conditioning,part of the heat The increase in speed along the window side increases the amount of heat that is sent to the active area of the person.Adding heat preservation and air curtain can effectively reduce the influence of cold air infiltration and energy consumption of air conditioning.

关 键 词：冷风渗透 Airpak软件 温度梯度 温度场 速度场 

分 类 号：G63[文化科学—教育学]