摘要
基于层式通风房间室内空气流动特性建立了室内垂直温度分布预测模型.该模型将室内空气流动特性与热质平衡方程有机结合,并反映了室内热源强度、墙体辐射及送风参数等边界条件对室内垂直温度分布的影响.通过将模型计算结果与实验数据进行对比分析,发现室内垂直温度预测值与实验数据吻合较好,并在趋势上反映出层式通风房间室内垂直温度的变化特征.因此,本文提出的模型具有较好的预测精度,能够很好地用来指导层式通风系统的实际应用及能耗分析.
As a new energy-saving air supply mode,stratum ventilation system has not been widely applied due to inadequate theoretical support.A mathematical model based on the characteristics of the indoor air flow was established to predict the vertical temperature profile in a stratum ventilated room.By combining the characteristics of indoor air flow with mass and energy equilibrium equations,this model gave the quantitative relationship between indoor vertical temperatures and boundary conditions such as heat source,enclosure radiation and supply air parameters.A comparative study shows that the predictions of this model fit the experiment values well.The model can represent the practical vertical temperature profiles in a stratum ventilated room.The analyses indicate that this proposed model has acceptable accuracy and can be used for practical engineering designs and energy consumption analysis.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2015年第5期134-140,共7页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金资助项目(51178407)~~
关键词
层式通风
垂直温度分布
节点模型
能量平衡
stratum ventilation
vertical temperature distribution
nodal model
energy balance
