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张泉, Quan Zhang *, Guoqiang Zhang
Building and Environment 42(2007)1110-1118,-0001,():
-1年11月30日
Chemical contaminants emitted by dried building material influence the indoor air quality in the long term. Re-circulated ventilation is widely used in the actual ventilation systems and it is one of the important factors affecting the indoor contaminant concentration distribution. The objectives of this paper are to simulate the indoor total volatile organic compounds (TVOCs) distribution emitted from a new floor and the total TVOCs quantity inhaled by an occupant with the different fresh air ratios under a re-circulated ventilation system. Furthermore, contribution ratio of pollution source (CRP) index is utilized to calculate the TVOCs contribution ratio to the inhaled contaminant generated from different locations. Finally, the mean TVOCs emission rate and the residual TVOCs percentage within the building material, average concentration and average ventilation effectiveness at the different locations of the room with respect to time are also investigated. The simulation result and analysis are helpful for designing the indoor healthy occupant environment and improving some features of the re-circulated ventilation system.
Re-circulated ventilation system, Contribution ratio of pollution source (, CRP), , Dried building material, Total volatile organic compounds (, TVOCs),
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张泉, Tianfu Deng Quan Zhang Guoqiang Zhang Hao Yuan
Maximize Comfort: Temperature, Humidity and IAQVol.I-9-1 ICEBO2006, Shenzhen, China,-0001,():
-1年11月30日
The Hunan International Exhibition Center (HIEC) is a large space building. A stratified air-conditioning system on the second floor of the building has been adopted. Due to some problems with the air supply jet diffuser, CFD simulations were carried out to predict air distribution. Meanwhile, field measurement results were used to validate the CFD simulation results. A good agreement of simulated and test results was obtained. Based on simulation results, some analyses and suggestions are put forward to improve air distribution.
Large space building, Stratified air-condition, Air distribution, CFD
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张泉, 林尧林☆, 张国强, 彭建国
暖通空调,2002,32(5):93~95,-0001,():
-1年11月30日
分析了采用单机的计算机辅助决策系统存在的不足,运用层次分析法在因特网平台上建立了开放的决策系统。算例明,该方法的决策过程中的基础数据来自web服务器,因而大大减少了单机上需要录入的数据,决策结果是可以接受的。
因特网, 层次分析, 法冷热源
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张泉, Jie Hana, Guoqiang Zhanga, *, Quan Zhanga, Jinwen Zhanga, Jianlong Liua, Liwei Tiana, Cong Zhenga, Junhong Haob, Jianping Linb, Yanhui Liub, Demetrios. J. Moschandreasa, c
Building and Environment 42(2007)4043-4050,-0001,():
-1年11月30日
This paper discusses thermal comfort inside residences of three cities in the hot-humid climate of central southern China. Only a few thermal comfort studies have been performed in hot-humid climates and none in Central Southern China. Field sampling took place in the summers of 2003 and 2004 by obtaining 110 responses to a survey questionnaire and measuring environmental comfort variables in three rooms in each of 26 residences. The objectives are to measure and characterize occupant thermal perceptions in residences, compare observed and predicted percent of dissatisfied and discern differences between this study and similar studies performed in different climate zones. Average clothing insulation for seated subjects was 0.54 clo with 0.15 clo of chairs. Only 48.2% of the measured variables are within the ASHRAE Standard 55-1992 summer comfort zone, but approximately 87.3% of the occupants perceived their thermal conditions acceptable, for subjects adapt to prevailing conditions. The operative temperature denoting the thermal environment accepted by 90% of occupants is 22.0–25.91. In the ASHRAE seven-point sensation scale, thermal neutral temperature occurs at 28.61. Preferred temperature, mean temperature requested by respondents, is 22.81. Results of this study can be used to design low energy consumption systems for occupant thermal comfort in central southern China.
Field study, Residential thermal environment, Occupant comfort, Hot-humid climates
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张泉, 张泉+, 袁昊, 张国强, 邓天福
湖南大学学报(自然学报),2007,34(8):1~5,-0001,():
-1年11月30日
使用计算流体力学(CFD)技术,结合动网格技术和刚体运动学理论,对室内人体移动进行了动态模拟,得到了人体移动过程中不同时刻室内流场分布.分析了移动过程中的平均温度、平均速度、温度和速度不均匀性指标,并预测了有效吹风温度(TEDT)、空气分布特性指标(ADPI)和吹风感的不满意率指标(PD),比较了不同人体移动速度对以上指标的影响.模拟结果表明,人体移动对室内气流分布和热舒适有短期影响,能提高室内风速的扰动,造成吹风感.
空气质量, 动网格模型, 气流分布, 热舒适, 热环境
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