作者机构：
[朱辉; 刘志强; 王汉青] School of Energy Science and Engineering, Central South University, Changsha, 410083, China;[王汉青] School of Civil Engineering, University of South China, Hengyang, 421001, China
通讯机构：
School of Energy Science and Engineering, Central South University, Changsha, China
作者机构：
[Xie, Dong; Wang, Yun; Mo, Shunquan; Liao, Maili] Univ South China, Sch Urban Construct, Hengyang 421001, Peoples R China.;[Xie, Dong; Wang, Hanqing] Cent S Univ, Sch Energy Sci & Engn, Changsha 410083, Hunan, Peoples R China.;[Wang, Hanqing] Hunan Univ Commerce, Changsha 410205, Hunan, Peoples R China.
通讯机构：
[Xie, Dong] U;Univ South China, Sch Urban Construct, Hengyang 421001, Peoples R China.
关键词：
CFD;Capillary ceiling radiant cooling panel;Cooling capacity;Distribution of temperature non-uniformity;Numerical analysis
摘要：
Capillary ceiling radiant cooling panel is a high temperature cooling system, which could pose low energy consumption to meet thermal comfort requirements. A computational fluid dynamics (CFD) simulation study on heat transfer of chilled water flow in the capillary of ceiling radiant cooling panel was performed to attain surface temperature distributions and cooling capacities. Six influencing factors included chilled water inlet parameters, conditions of gypsum plaster and capillary mats structural parameters were considered to obtain the complicated relationships between capillary radiant panel conditions and heat transfer performance. The index of temperature non-uniformity coefficient was proposed to evaluate temperature profiles of ceiling panel surface. The results of the simulation were compared with the values depicted in ASHRAE Handbook and good agreement had been achieved. The average difference between simulation results and the values reported by ASHRAE handbook was within the region of 15%. The research results showed that temperature non-uniformity coefficient was negatively correlated with temperature of chilled inlet water (linear correlation), water velocity (correlation coefficient R = -0.85), and pipe diameter (correlation coefficient R = -0.93), but positively and linearly correlated with tube spacing. Cooling capacity was found to have negative linear correlation with temperature of chilled inlet water, covering thickness and tube spacing. (C) 2015 Elsevier Ltd. All rights reserved.
作者：
Gu, Wei Li*;Wang, Han Qing;Kou, Guang Xiao;Cao, Qiao Ying
期刊：
Computer Modelling and New Technologies,2014年18(9):438-444 ISSN：1407-5806
通讯作者：
Gu, Wei Li
作者机构：
[Gu, Wei Li] School of Energy and Power Engineering, Central South University, Changsha, China;[Wang, Han Qing; Kou, Guang Xiao] Hunan University of Technology, Zhuzhou, China;[Gu, Wei Li; Cao, Qiao Ying] Department of Urban Construction, University of South China, Hengyang, China
摘要：
According to the problems as low efficiency, aging of organic heat transfer material and frequent accidents in the operation of the coil organic heat transfer material heater, with the finite time thermodynamics, this paper studies the actual processes including combustion process, flow and heat transfer process, considers the irreversible factors as combustion condition, the fuel characteristics, flow resistance and heat transfer temperature difference, derives the calculation formula of energy loss for three processes and to determine the minimum energy loss. Based on this, this paper proposes energy-saving optimization strategy and gives examples, the results accord with the analysis. In design and operation, the outlet flue gas temperature of furnace, flue gas temperature and flow velocity of hot oil are important.
作者机构：
[谢东; 叶勇军; 刘泽华; 熊军] School of Urban Construction, University of South China, Hengyang 421001, China;[王汉青] School of Civil Engineering, University of Hunan Technology, Zhuzhou 412007, China;[谢东; 王汉青] School of Energy Science and Engineering, Central South University, Changsha 410083, China
通讯机构：
School of Urban Construction, University of South China, China
期刊：
ICEET: 2009 INTERNATIONAL CONFERENCE ON ENERGY AND ENVIRONMENT TECHNOLOGY, VOL 1, PROCEEDINGS,2009年:415-+
通讯作者：
Gu, Weili
作者机构：
[Luo, Qinghai; Gu, Weili] Univ South China, Dept Urban Construct, Hunan Hengyang, Peoples R China.;[Luo, Qinghai; Gu, Weili] Cent S Univ, Sch Energy & Power Engn, Hunan Changsha, Peoples R China.;[Wang, Hanqing; Kou, Guangxiao] Hunan Univ Technol, Hunan Zhuzhou, Peoples R China.
通讯机构：
[Gu, Weili] U;Univ South China, Dept Urban Construct, Hunan Hengyang, Peoples R China.
关键词：
the organic heat transfer material heater;finite time thermodynamics;exergy analysis;energy-saving optimization
摘要：
According to the low efficiency of the organic heat transfer material heater, this paper studies the heat transfer process under temperature difference in the organic heat transfer material heater with the finite time thermodynamics, derives the calculation formula and characteristic parameter x to determine the minimum temperature difference with the minimum exergy loss. Based on this, this paper proposes that the characteristic parameter x can be used as the optimization criterion of energy-saving and to judge the energy utilization efficiency of the organic heat transfer material heater, furthermore, proposes the concrete energy-saving optimization strategy by controlling the mean heat absorption temperature, and gives an actual calculation, the result accords with the analysis.
作者机构：
School of Energy and Power Engineering, Central South University, Hunan, China;Department of Urban Construction, University of South China, Hunan, China;Zhuzhou Institute of Technology, Hunan, China
通讯机构：
School of Energy and Power Engineering, Central South University, China
关键词：
Clients' and operators';Effects;Indoor environment;Satisfaction;Supermarket
摘要：
Supermarket is common in China because of its convenience and abundant merchandise. People in supermarket can be classified into two categories: clients and operators. This research measures the temperature and relative humidity of four supermarkets to describe the indoor thermal environment, investigates the satisfactory degree of clients and operators on the indoor environment, and analyses the reasons of dissatisfaction.
作者机构：
Department of Civil Engineering, Hunan University of Technology, Zhuzhou Hunan, China;School of Energy Science and Engineering, Central South University, Changsha, China;School of Urban Construction, Nanhua University, Hengyang Hunan, China
通讯机构：
Department of Civil Engineering, Hunan University of Technology, China
关键词：
Exhaust hood;Kitchen fume pollution;Optimization control
摘要：
All over the world, Chinese restaurants can be found everywhere and the Chinese foods are famous. The Chinese food preparation procedure includes: frying, stir-frying, stew, etc. In the process of cooking, It releases large amounts of aerosol which is the mixture of vapor, PAHs (Polycyclic Aromatic Hydrocarbon), VOCs (Volatile Organic Compounds), etc. When the aerosol mixes with combustion exhaust-gas, the mixture becomes main air contaminant in kitchen. The contaminant deteriorates kitchen air quality, has drastic "Mutagenesis", "Teratogenesis" and " Carcinogenesis" effects and influences the human body health. Taking a typical Chinese residential kitchen as an example, it is analyzed in the paper the fume pollution status and also the different kinds of kitchen fume control methods. It points out that the kitchen exhaust hood is an efficient way. With the computational fluid dynamics (CFD) numerical simulation and field experiment verification, fume control performances of different exhaust hood are compared. By the changing of hood configurations and airflow modes, it is put forward a new energy-conservation kitchen exhaust hood in this paper.
作者机构：
School of Energy Science and Engineering, Central South University, ChangSha, Hunan410083, China;School of Urban Construction, University of South China, HengYang, Hunan421001, China;Department of Civil Engineering, Hunan University of Technology, ZhuZhou, Hunan412008, China
通讯机构：
School of Energy Science and Engineering, Central South University, China
关键词：
Experimental investigation;Indoor air environment;Numerical simulation;Ventilation patterns
摘要：
The ventilation efficiency of different ventilation patterns inside a room containing one person and office furniture arranged by different inlet/outlet configurations was investigated. The numerical simulation (CFD) was first adopted to predict air flow pattern and ventilation performance. Then, a laboratory experimental measurement at room air distribution in a full-scale test chamber was conducted using the hot wire velocimetry (IFA300) to validate the simulation results. In addition, questionnaire surveys were conducted from the different gender groups in order to assess indoor air quality and human comfort in workplace micro-environments. The distribution of supply/exhaust air in the study was investigated in isothermal conditions using different supply air velocities. The results indicated that the ventilation efficiency and human comfort might be dominantly influenced by location of diffuser rather than air change rate.
作者：
Xie Dong*;Wang Han-qing;Deng Qi-hong;Xiong Jun
期刊：
中南大学学报(英文版),2007年14:66-70 ISSN：2095-2899
通讯作者：
Xie Dong
作者机构：
[Xie Dong; Deng Qi-hong] Cent S Univ, Sch Energy Sci & Engn, Changsha 410083, Peoples R China.;[Xie Dong; Xiong Jun] Univ S China, Sch Urban Construct, Hengyang 421001, Peoples R China.;[Wang Han-qing] Hunan Univ Technol, Dept Civil Engn, Zhuzhou 412008, Peoples R China.
通讯机构：
[Xie Dong] C;Cent S Univ, Sch Energy Sci & Engn, Changsha 410083, Peoples R China.
关键词：
indoor air environment;ventilation patterns;numerical simulation;human comfort
摘要：
The different ventilation patterns inside a room containing one person and office furniture arranged by different inlet/outlet configurations was investigated. The numerical simulation was first adopted to predict air flow pattern and ventilation performance. Then, a laboratory experimental measurement at room air distribution in a fall-scale test chamber was conducted using the hot wire velocimetry to validate the simulation results. In addition, questionnaire surveys were conducted from the different gender groups in order to assess indoor air quality and human comfort in workplace micro-environments. The distribution of supply/exhaust air in the study was investigated in isothermal conditions using different supply air velocities. The results indicate that the ventilation efficiency and human comfort might be dominantly influenced by location of diffuser rather than air change rate.,
