Environmental Parameters Distribution and Energy Saving Analysis with Personalized Ventilation System
The distribution of environment parameters both at working and ambient area was studied with personalized ventilation (PV) using objective measurement.We performed this experiment in an environment controlled chamber.Subjects were exposed to local airflow towards the face at three air supply volume (25,15,10L/s),at ambient temperature of 28℃ with PV air temperature of 18,20,23℃ and at ambient temperature of 20℃ with PV temperature of 26,30℃.Air temperature and velocity at the workplace were collected at five heights (0.11,0.50,0.68,1.01,1.21m) corresponding to the altitude of ankle,lap,abdomen,neck and head.The results revealed that air velocity distribution at the workplace closely lay on PV but the temperature distribution was obviously influenced not only by PV but also by mixing ventilation.High velocity airflow was gained in front of face and chest region.Face and chest air velocity values increased clearly when PV supplied more air,however air velocity behind of human body changed little as PV air supply increasing.It was found that transient duration both of air velocity and temperature at the workstation would last more than 10min after turning on PV.The potential of energy saving was also estimated by comparing with traditional mixing ventilation system for a typical office building in Dalian,China.
Personalized ventilation system Environment parameters Energy saving
Yuming Sun Lin Duanmu Xingli Li Haiwei Shu Zongshan Wang
School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian,China
国际会议
The First International Conference on Building Energy and Environment(第一届建筑能源与环境国际会议)
大连
英文
39-45
2008-07-01（万方平台首次上网日期，不代表论文的发表时间）