With the increasing requirement of a higher living quality and the growing awareness of energy saving, how to improve the indoor comfort level and to reduce the expenditure of energy and slow down the rate of natural ...With the increasing requirement of a higher living quality and the growing awareness of energy saving, how to improve the indoor comfort level and to reduce the expenditure of energy and slow down the rate of natural resource consumption is becoming increasingly important. The theory of open-plan housing is able to provide a more flexible and adaptive space for the users and bring sustainable and economic benefit in the way of making full use of construction materials. Sustainable architecture design, as a method to respond the phenomenon, is able to low down the building＇ s energy consumption and has enormous potentials in creation of sustainable living environment and a high-quality dwelling condition. The primary aim of this research is to create a new sustainable architecture design method for occupancy by integrating openplan housing theory and application of sustainable technologies. Numerical simulation by computer program is applied in order to investigate and evaluate the possibility of this method in teruas of improving indoor comfort level and energy-saving capacity.展开更多
Research on the window operating behavior of offices is of great significance for reducing building energy con-sumption and improving indoor comfort.The open-plan office is a common office form that involves a large n...Research on the window operating behavior of offices is of great significance for reducing building energy con-sumption and improving indoor comfort.The open-plan office is a common office form that involves a large number of people and a complex staffcomposition.The window operating behaviors in open-plan offices are also random and various.This study took three open-plan offices with different situations(area,office type,staffcomposition,etc.)as an example,which provides a new perspective on how people behave differently when opening or closing windows.The window operating behaviors in two typical seasons(summer and transition seasons)were recorded and analyzed.The occupants’schedules and influencing factors of window operating behavior were investigated by questionnaire surveys.In addition,the indoor environmental parameters,occu-pancy situation,and on-offstatuses of windows and air conditioning were acquired through field measurements.Furthermore,the differences in window operating behaviors in the three open-plan offices were compared from the perspectives of influencing factors,duration of the window on-offstatuses,and cause of window control ac-tions,among others.In addition,Spearman Correlation Coefficient was used to analyze the ranks of the candidate motivations for window operating behaviors.The preliminary results show that influenced by the personnel com-position,type of air conditioner and adjustable degree of windows,the window operating behaviors of different office buildings have larger discrepancies than that in the same building.However,there were some common characteristics in the window regulation behaviors of the three open-plan offices:they were generally influenced by the coupling of environmental factors,schedule factors,and equipment factors.This study reveals that when expand the research object from a single building to multiple buildings,more difficulties and challenges would be involved into behavior research.展开更多
This study aims to examine the effect of building plan form on internal thermal comfort conditions in naturally ventilated open-plan buildings located in hot climates.The study examined the square and the rectangular ...This study aims to examine the effect of building plan form on internal thermal comfort conditions in naturally ventilated open-plan buildings located in hot climates.The study examined the square and the rectangular plan forms in relation to several values of wind direction,building plan depth,and climatic conditions.The study utilised CFD for ventilation prediction,DesignBuilder for thermal modelling,and the Tropical Summer Index(TSI)for thermal comfort assessment.These three tools were integrated in a quantitative approach to fulfil the study aim.The study concluded that the use of area-weighted average velocity magnitude is more accurate in the assessment of natural ventilation performance,as it accounts for both internal velocity magnitude and distribution.The study confirmed the common observation that the use of shallow building plans is more effective to increase internal air velocity and improve internal thermal comfort.At some point of increased plan depth,the internal air velocity magnitude dramatically decreases.In the three examined wind directions,this occurred when the plan depth exceeded 3H in the square cases and 2.5H in the rectangular ones,where H is the building height.This value is much less than the commonly recommended maximum value of 5H.The study also concluded that reducing building depth in the square cases has generally more potential to improve thermal comfort conditions when compared with the rectangular cases.The gross increase in Percentage of People Comfortable,PPC,in all the examined cases was 23%in the square cases,compared to 11%in the rectangular cases.展开更多
针对特高压接入的输电网网架错综复杂、远景适应性差,甚至出现网架规划与开环分区决策相互独立导致资源浪费等问题,该文引入奇异值分解(singular value decomposition,SVD)和特征索引技术,提出了一种考虑电磁环网开环分区和500/220kV典...针对特高压接入的输电网网架错综复杂、远景适应性差,甚至出现网架规划与开环分区决策相互独立导致资源浪费等问题,该文引入奇异值分解(singular value decomposition,SVD)和特征索引技术,提出了一种考虑电磁环网开环分区和500/220kV典型供电结构的输电网多阶段规划方法。首先,提取典型供电结构的路径特征,制定了一种基于标签路径特征的典型供电结构索引策略;然后,构建了一种基于SVD的典型供电结构相似度指标,基于此,以全局典型供电结构相似程度最大为目标,建立了相似度识别规划模型;最后,提出了一种反馈调节机制及求解方法,统筹协调各阶段网架规划和开环分区之间的决策信息。与传统规划方法相比,该文方法不仅能够避免不同阶段开环分区决策导致的资源浪费,还可以减少复杂的规划评估指标计算,构建供电可靠性高、运行方式灵活、远景适应性强的网架结构。基于湖南某地区实际电网算例验证了该文方法的准确性和有效性。展开更多
文摘With the increasing requirement of a higher living quality and the growing awareness of energy saving, how to improve the indoor comfort level and to reduce the expenditure of energy and slow down the rate of natural resource consumption is becoming increasingly important. The theory of open-plan housing is able to provide a more flexible and adaptive space for the users and bring sustainable and economic benefit in the way of making full use of construction materials. Sustainable architecture design, as a method to respond the phenomenon, is able to low down the building＇ s energy consumption and has enormous potentials in creation of sustainable living environment and a high-quality dwelling condition. The primary aim of this research is to create a new sustainable architecture design method for occupancy by integrating openplan housing theory and application of sustainable technologies. Numerical simulation by computer program is applied in order to investigate and evaluate the possibility of this method in teruas of improving indoor comfort level and energy-saving capacity.
基金supported by the National Natural Science Foundation(51708105).
文摘Research on the window operating behavior of offices is of great significance for reducing building energy con-sumption and improving indoor comfort.The open-plan office is a common office form that involves a large number of people and a complex staffcomposition.The window operating behaviors in open-plan offices are also random and various.This study took three open-plan offices with different situations(area,office type,staffcomposition,etc.)as an example,which provides a new perspective on how people behave differently when opening or closing windows.The window operating behaviors in two typical seasons(summer and transition seasons)were recorded and analyzed.The occupants’schedules and influencing factors of window operating behavior were investigated by questionnaire surveys.In addition,the indoor environmental parameters,occu-pancy situation,and on-offstatuses of windows and air conditioning were acquired through field measurements.Furthermore,the differences in window operating behaviors in the three open-plan offices were compared from the perspectives of influencing factors,duration of the window on-offstatuses,and cause of window control ac-tions,among others.In addition,Spearman Correlation Coefficient was used to analyze the ranks of the candidate motivations for window operating behaviors.The preliminary results show that influenced by the personnel com-position,type of air conditioner and adjustable degree of windows,the window operating behaviors of different office buildings have larger discrepancies than that in the same building.However,there were some common characteristics in the window regulation behaviors of the three open-plan offices:they were generally influenced by the coupling of environmental factors,schedule factors,and equipment factors.This study reveals that when expand the research object from a single building to multiple buildings,more difficulties and challenges would be involved into behavior research.
文摘This study aims to examine the effect of building plan form on internal thermal comfort conditions in naturally ventilated open-plan buildings located in hot climates.The study examined the square and the rectangular plan forms in relation to several values of wind direction,building plan depth,and climatic conditions.The study utilised CFD for ventilation prediction,DesignBuilder for thermal modelling,and the Tropical Summer Index(TSI)for thermal comfort assessment.These three tools were integrated in a quantitative approach to fulfil the study aim.The study concluded that the use of area-weighted average velocity magnitude is more accurate in the assessment of natural ventilation performance,as it accounts for both internal velocity magnitude and distribution.The study confirmed the common observation that the use of shallow building plans is more effective to increase internal air velocity and improve internal thermal comfort.At some point of increased plan depth,the internal air velocity magnitude dramatically decreases.In the three examined wind directions,this occurred when the plan depth exceeded 3H in the square cases and 2.5H in the rectangular ones,where H is the building height.This value is much less than the commonly recommended maximum value of 5H.The study also concluded that reducing building depth in the square cases has generally more potential to improve thermal comfort conditions when compared with the rectangular cases.The gross increase in Percentage of People Comfortable,PPC,in all the examined cases was 23%in the square cases,compared to 11%in the rectangular cases.
文摘针对特高压接入的输电网网架错综复杂、远景适应性差,甚至出现网架规划与开环分区决策相互独立导致资源浪费等问题,该文引入奇异值分解(singular value decomposition,SVD)和特征索引技术,提出了一种考虑电磁环网开环分区和500/220kV典型供电结构的输电网多阶段规划方法。首先,提取典型供电结构的路径特征,制定了一种基于标签路径特征的典型供电结构索引策略;然后,构建了一种基于SVD的典型供电结构相似度指标,基于此,以全局典型供电结构相似程度最大为目标,建立了相似度识别规划模型;最后,提出了一种反馈调节机制及求解方法,统筹协调各阶段网架规划和开环分区之间的决策信息。与传统规划方法相比,该文方法不仅能够避免不同阶段开环分区决策导致的资源浪费,还可以减少复杂的规划评估指标计算,构建供电可靠性高、运行方式灵活、远景适应性强的网架结构。基于湖南某地区实际电网算例验证了该文方法的准确性和有效性。
