百叶风口的对开张角对室内热舒适性及能耗影响分析  

Analysis of Impact of Opening Angle of Register on Indoor Thermal Comfort and Energy Consumption

作　　者：刘鹏飞 陈焕新[1] 王江宇[1] 雷艳杰 张军 孙策 LIU Pengfei;CHEN Huanxin＊;WANG Jiangyu;LEI Yanjie;ZHANG Jun;SUN Ce(School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Beijing Huayu Energy Technology Co.,Ltd.,Beijing 100083,China)

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074 [2]北京华誉能源技术股份有限公司,北京100083

出　　处：《制冷技术》2018年第2期38-44,共7页Chinese Journal of Refrigeration Technology

基　　金：基于动态识别和聚类分析的制冷系统故障诊断训练数据优化分析(No.51576074)

摘　　要：百叶风口作为现代中央空调常用的末端装置,分析其送风角度对室内热舒适性及能耗的影响是十分必要的。在详细分析前人的风口模型之后,通过对前人模型的改进,本文结合其中两种风口模型的优点,用FLUENT软件模拟出百叶风口在不同的对开张角下,室内的温度分布与速度分布。通过目前最全面评价热环境的指标——预测平均冷热感投票(Predicted Mean Vote,PMV)来分析室内的热舒适性,由流经各个壁面的热流量来定性分析其能耗。模拟结果表明:4种对开张角下的室内气流分布基本符合我国标准,室内只有少部分位置的吹风感较强,且在外墙附近的温度均偏高;而当百叶风口的对开张角为20°时,室内温度分布的波动是最小的,PMV值最优,具有较高的热舒适性,与此同时,能耗也达到最低水平。Register is a terminal device commonly used in modern central air conditioner, and it is of great significance to analyze the influence of its air supply angle on indoor thermal comfort and energy consumption. Based on the detailed analysis and improvements of the predecessor＇s supply opening model, a model that combines the advantages of the two supply opening models is proposed, which can be used to simulate the indoor temperature distribution and velocity distribution corresponding to different opening angles with FLUENT simulation software. Then predicted mean vote（PMV）, the most comprehensive evaluation indicator for thermal environment, is introduced to analyze the indoor thermal comfort. Energy consumption is qualitatively analyzed by means of heat flow of each wall. The simulation results show that the distribution of indoor air flow under four different opening angles basically complies with national standards. Only a small part of the room has a strong feeling of blowing and the temperature near the exterior wall is higher than other parts of the room. The fluctuation of indoor temperature distribution reaches minimum value and it has the optimal PVM and high thermal comfort when the opening angle is 20°. At the same time, the energy consumption reaches the lowest level.

关 键 词：百叶风口 对开张角 预测平均冷热感投票值 能耗 

分 类 号：TU111[建筑科学—建筑理论] TU831