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Spatio-temporal distribution of gaseous pollutants from multiple sources in industrial buildings with different flow patterns

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building Simulation 2022年第9期15卷 1629-1644页

作者： Yingxue Cao Yi Wang Zhuolei Yu Caiwu Lu Songheng Wu Yang Yang Xiaojing Meng School of Resources Engineering Xi'an University of Architecture and TechnologyNo.13 Yanta RDXi'anShaanxi 710055China State Key Laboratory of Green building in Western China Xi'an University of Architecture and TechnologyChina School of building Services Science and Engineering Xi'an University of Architecture and TechnologyNo.13 Yanta RDXi'anShaanxi 710055China

Energy consumption of industrial buildings has remained continuously high,and the environmental quality requirements are also constantly *** by improving industrial environmental control technology based on the transport mechanism of the pollution,can the energy consumption of industrial building environmental control be further reduced,and the environmental quality of industrial buildings can be improved as ***,after verifying the numerical simulation by experiments,this study uses a self-label method to investigate the spatio-temporal distribution of gaseous pollutants from multiple time-series sources in industrial plants with different length-span *** results show that,the polluted flow in plants with different aspect ratios have different flow patterns:(i)the,,Back-mixingw flow pattern occurs when the ratio of ventilation rate 6 and polluted flow rate at the exhaust height b is less than 1,i.e.,G/L_(p)*** plants with the"Back-mixing"pattern,the following source pollutants enter a density stratified environment induced by the retained pre-source *** flow of following source pollutants released at the same intensity as the precursor source can reach the roof,while those with low velocity and density difference may be blocked during the ascending *** maximum height zm of the flow of the following source is related to both the initial Froude number Fr_(o)of the following source and the unsteady vertical density gradient of the fluid in the indoor environment dpa/*** plants with the,,One-way,/pattern,the flow from the following source enters into an environment with approximately uniform *** the condition of positive buoyancy,design parameters of ventilation corresponding to the vicinity of G/L_(p)=1 may be the optimal solution for safety and energy conservation.

关键词： multiple time-series sources flow pattern long and narrow industrial building industrial ventilation gaseous pollutants

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Main points for “lightscape”: A new discipline

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Science China(Technological Sciences) 2019年第4期62卷 702-706页

作者： WU ShuoXian State Key Laboratory of Subtropical building Sciences School of Architecture South China University of Technology

Soundscape [2] refers to a landscape which is constructed through sound and hearing as a counterpart of an ordinary visual *** concept of soundscape has attracted much attention and has become a hot topic for research... 详细信息

关键词： Soundscape sound circle

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Xianfeng？ Houfeng？ Youfeng？-An analysis of selected contemporary Chinese architects, Yung Ho Chang, Liu Jiakun, and Wang Shu （1990s-2000s）

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Frontiers of Architectural research 2015年第2期4卷 146-158页

作者： Hing-wah Chau Faculty of architecture Building and Planning The University of Melbourne Victoria 3000 Australia

The three contemporary Chinese architects, namely Yung Ho Chang, Liu Jiakun, and Wang Shu, have often been labeled as the ＇avant-garde＇ or xianfeng architects in China. In response to the xionfeng architect labet, Wang claims that he is a houfeng （rear-guard） architect because of his obsession with traditions. This paper aims to discuss the appropriateness of labeling these architects as ＇avant-garde,＇ xianfeng, or houfeng. Through the theoreticat anatysis of western discourse, notable attributes of the western architectural avant-garde are identified, and a tentative framework is developed to test its validity and usefulness in a non-western context. The term youleng is arguably a better phrase to describe these three Chinese architects considering the heterogeneous trajectory of modernity in China.

关键词： ContemporaryChinese architecture Architectural avant-garde Experimentation Social response Serf-consciousness Design strategies

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The Pathways toward Carbon Peak and Carbon Neutrality in China's building Sector

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Chinese Journal of Urban and Environmental Studies 2022年第2期10卷 57-69页

作者： GUO Siyue JIANG Yi HU Shan Institute of Energy Environment and Economy Tsinghua University building Energy research Center School of Architecture Tsinghua University

Achieving carbon peaking and carbon neutrality in the building sector is an important component of China’s "dual carbon" *** recent years,the country’s direct carbon emissions in the building sector have hit a plateau while the total emissions still grow ***,the building materials for construction and refrigerants leaked during buildings’ operation also result in greenhouse gas *** achieve the targets set for future low-carbon development,the building sector should feature sufficient demand,decarbonized structure and flexible load." According to the analysis of the emission reduction approaches adopted by different sectors,China’s building sector should make a ceaseless effort to promote building energy conservation,improve electrification,and load flexibility,reform the energy system in rural areas,optimize the heating structure in northern China’s urban areas,as well as reduce the emissions during construction and the non-CO2gas *** the 14th Five-Year period,it is suggested to clarify the total energy consumption and carbon emission targets,adjust the energy structure more vigorously,and draw up more measures to reduce the emissions related to construction and refrigerant leakage.

关键词： Carbon peaking carbon neutrality the building sector

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research on optimization and design methods for air distribution system based on target values

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building Simulation 2021年第3期14卷 721-735页

作者： Ran Gao Hengchun Zhang Angui Li Shihao Wen Wuyi Du Baoshun Deng School of building Services Science and Engineering Xi'an University of Architecture and TechnologyXi'an 710055China School of Thermal Engineering Shandong Jianzhu UniversityJinan 250101ShandongChina China Railway First Survey&Design Institute Group Xi'an 710043China

To achieve sufficient air conditioning of large buildings,reasonable air distribution in indoor spaces is an effective method for creating stratified air ***,optimizing the air distribution in large buildings is extremely *** this paper,we expound on a new method for air distribution design and optimization based on target value evaluation and summarize the relevant design processes based on an orthogonal test and by decoupling the effects of the size of the tuyere,airflow temperature,air-supply angle and velocity on air ***,we present a design *** optimize the distribution of a lateral air supply in winter,the deflection angle,velocity and temperature of the air supply can be determined in *** the large and tall building types addressed in this paper,the optimal air-supply angle is 2°,the optimal air-supply velocity is 8 m/s,and the optimal air-supply temperature is 19℃.

关键词： air distribution target value indicator optimization

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Comparison of the hygrothermal performance of two light-framed timber structure buildings under different operation modes

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2024年第1期25卷 18-35页

作者： Wanqing XU Yucong XUE Jiang LU Yifan FAN Xiaoyu LUO College of Civil Engineering and architecture Zhejiang UniversityHangzhou310058China International research Center for Green building and Low-Carbon City International CampusZhejiang UniversityJiaxing314400China School of Civil Engineering and architecture Zhejiang University of Science and TechnologyHangzhou310023China

Light-framed timber structure(LTS)buildings have been highly valued in recent years due to their low-carbon ***,the applicability of the building envelope is closely related to indoor and outdoor *** hot summer and cold winter(HSCW)climate zone in China has high humidity and great temperature variation throughout the year,resulting in distinct outdoor environments in different *** indoor environment is greatly affected by energy-consumption patterns and window-opening habits,which largely depend upon the regulation operations of *** these interrelated factors lead to extremely complex boundary conditions on each side of the building *** the structures of LTS buildings are applicable in this climate zone,therefore,needs to be carefully *** this study,two LTS buildings with different envelopes were established in Haining,China,situated in the HSCW climate zone,and selected as the study *** operation modes were adopted to create a variety of indoor *** each condition,the processes of heat and moisture transfer within the building envelopes and the indoor environment were monitored and *** comparison indicated that the building envelope with high moisture storage and insulation ability maintained a relatively stable indoor environment,especially when the environment changed ***,if the outdoor environment was equable(e.g.,relative humidity within the range of 30%–60%)or intermittent energy consumption modes were adopted,the building envelope with a low thermal inertia index and weak moisture-buffering ability performed better because it enabled a faster response of the indoor environment to air ***,a high risk of moisture accumulation between the thermal insulation layer and other materials with a large water vapour transfer resistance factor was also identified,suggesting a higher requirement for the vapour insulation of the env

关键词： Light-framed timber structure(LTS)buildings In-situ experiment Typical operation mode Indoor environment Heatand moisture transfer

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Co-production of hydrogen, oxygen, and electricity via an integrated solar-driven system with decoupled water electrolyzer and Na-Zn ion battery

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Journal of Energy Chemistry 2025年第1期100卷 621-627页

作者： Fei Lv Longjie Liu Jiazhe Wu Pengfei Wang Lixia Pan Dengwei Jing Yubin Chen International research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University

Combining water electrolysis and rechargeable battery technologies into a single system holds great promise for the co-production of hydrogen （H2） and ***,the design and development of such systems is still in its ***,an integrated hydrogen-oxygen （O2）-electricity co-production system featuring a bipolar membrane-assisted decoupled electrolyzer and a Na-Zn ion battery was established with sodium nickelhexacyanoferrate （NaNiHCF） and Zn2+/Zn as dual redox *** decoupled electrolyzer enables to produce H2and O2in different time and space with almost 100%Faradaic efficiency at 100 mA ***,the charged NaNiHCF and Zn electrodes after the electrolysis processes formed a Na-Zn ion battery,which can generate electricity with an average cell voltage of 1.75 V at 10 m A *** connecting Si photovoltaics with the modular electrochemical device,a well-matched solar driven system was built to convert the intermittent solar energy into hydrogen and electric energy with a solar to hydrogen-electricity efficiency of 16.7%,demonstrating the flexible storage and conversion of renewables.

关键词： Hydrogen Electricity Decoupled water electrolyzer Na-Zn ion battery Solar energy

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The Influence of Two Natural Reinforcement Fibers on the Hygrothermal Properties of Earthen Plasters in Mogao Grottoes of China

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Journal of Renewable Materials 2020年第12期8卷 1691-1710页

作者： Wenbei Bi Zengfeng Yan Huan Zhao Lixin Sun Xudong Wang Zhengmo Zhang School of architecture Xi’an University of Architecture and TechnologyXi’an710055China China Academy of building research Beijing100044China Conservation Institute Dunhuang AcademyDunhuang736200China School of Engineering and Mechanics Lanzhou UniversityLanzhou730000China

Murals in Mogao Grottoes consist of three parts:support layer,earthen plasters and paint *** earthen plasters play a key role in the preservation of *** is a mixture of Dengban soil,sand,and plant *** different natural fibers,hemp fiber and cotton fiber,were reinforced to earthen plasters in the same percentage to evaluate the influence on hygrothermal *** two types of earthen plasters were studied:one containing hemp fiber in the fine plaster(HFP)and the other containing cotton fiber in the fine plaster(CFP).Specific heat capacity,dry thermal conductivity,water vapor permeability,and sorption isotherms were *** results showed that the difference between two natural fibers has much more impact on the hygric properties(water vapor permeability and sorption isotherms)of earthen plasters than on their thermal performance(specific heat capacity and dry thermal conductivity).The CFP with higher density has higher thermal conductivity than the HFP with lower *** no significant differences of specific heat capacity were *** with HFP,CFP used in murals can reduce the rate of water transfer and prevent salt from transferring water to the mural *** overall findings highlight that all these features of CFP are beneficial to the long-term preservation of mur*** study of the earthen plasters in Mogao Grottoes is of general significance,and the measured properties can be used to obtain coupled heat and moisture analysis of the earthen plasters and to dissect the degradation mechanism of murals.

关键词： Earthen plasters natural reinforced fibers hygrothermal properties dry thermal conductivity water vapor permeability sorption isotherms

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Tackling the microlensing wave effects of strong lensing gravitational waves with TAAH

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 257-258页

作者： Zuhui Fan South-Western Institute for Astronomy research Yunnan University

The rapid development of gravitational wave（GW） observations since their first detection in 2015 [1] has opened a completely new window for exploring the Universe. Consequently, astronomical research has entered the multimessenger era, allowing us to use different tracers to view the cosmos from various perspectives. Among others, the appealing application of gravitational wave events from compact binary mergers is that they can act as standard sirens to determine absolute cosmic distances entirely independent of standard candles. This approach is one of the most promising means to solve the current H0tension problem.

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Comparison of seismic actions and structural design requirements in Chinese Code GB 50011 and International Standard ISO 3010

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Earthquake Engineering and Engineering Vibration 2004年第1期3卷 1-9页

作者：王亚勇 Institute of Earthquake Engineering China Academy of Building Research

This papcr presents a comparison between the Chinese Code GB50011-2001 and the International Standard ISO3010:2001(E),emphasizing the similarities and differences related to design requirements,seismic actions and analytical *** include:earthquake return period,conceptual design,site classification,structural strength and ductility requirements,deformation limits,response spectra,seismic analysis procedures,isolation and energy dissipation, and nonstructural *** exist in the following areas:seismic levels,earthquake loading,mode damping factors and structural control.

关键词： seismic actions seismic design Chinese Code GB50011 International Standard ISO3010

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