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Publications
Publications (84)
This research focuses on achieving sustainable development in residential buildings with energy use. Under the influence of the energy crisis and related problems, research on residential buildings for less energy use has great potential. The literature review, according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses, and inc...
The article explores the use of virtual
technologies to revitalize Kitakyushu, Japan, by drawing on
the “Immersive Legacies” exhibition at Wellington Museum,
New Zealand, which utilized virtual technologies to great effect.
There the Reality-Virtuality Continuum was used to analyze
the digital heritage of the “Gordon Wilson Flats”. These
methods we...
Climate change has reduced the comfort of community environments, and there is an urgent need to improve the health and well-being of low-income residents through design and technical measures. Therefore, this paper conducts research in the context of an ongoing social housing renovation project in Aosta, Italy, in a cold winter and hot summer Alpi...
Indoor overheating induced by transparent roofs sharply increases the building energy consumption. Water spray offers a potential solution but requiring effective strategy to balance cooling effects and cost-effectiveness. Aiming at a spray system installed on transparent roof (63.2 × 24.6 m) of a mixed-use building in Guangzhou, China, this study...
Climate change and population aging are two of the most important global health challenges in this century. A 2020 study by the Environmental Protection Agency showed that average people, particularly older adults, spent 90% of their time at home. This is even more evident during the coronavirus disease 2019 (COVID-19) pandemic. Home-based care mod...
Under the effects of global warming and further environmental issues, sustainable development has gained worldwide relevance. The United Nations (UN) proposed Sustainable Development Goals (SDGs) for sustainable development, including carbon neutrality. This research focused on decreasing the building energy use and carbon emissions for carbon neut...
Glass buildings in coastal regions and islands exposed to the hydrothermal marine environment, in addition to salt deposition and erosion, lead to a change in the surface convective heat transfer coefficient (CHTC) and gradual degradation of the building energy and thermal performance. However, limited research has been conducted on the influence o...
Pervious pavement system (PPS) is a suitable alternative technique for mitigating urban flooding and urban heat island (UHI) simultaneously. However, existing literature has revealed that PPSs cannot achieve the expected permeability and evaporation. To overcome this gap, this study presents an elaborate review of problems associated with PPSs and...
Pervious pavement is an efficient cooling strategy to alleviate the urban heat island (UHI) effect because it can retain percolating rainwater for subsequent evaporative cooling. The cooling effect simulation of pervious pavement before implementation is necessary to understand its contribution to the thermal environment. However, it still confront...
Urban green spaces play a crucial role in regulating the micro-climates of their surrounding built-up areas, which is particularly important in high-density cities. A field-measurement method with high accuracy and convenient movement is always adopted to assess the micro-climates and regulating capacity. Compared with fixed observation, mobile mea...
Urban heat islands (UHI) have strong spatiotemporal variations. Despite surface UHIs (SUHIs) with fine spatial distribution, UHIs have many advantages, more continuous temporal patterns, more relevant to people's feelings, and better thermal interaction between adjacent areas. Furthermore, the incomplete overlap between SUHI and UHI patterns within...
Ethylene tetrafluoroethylene (ETFE) cushion roofs are used for improving indoor natural lighting. However, their poor thermal insulation compromises the indoor thermal environment. Water spraying offers promising potential in roof cooling, but its cooling and shading effects on ETFE cushion roofs have not been examined. This paper on roof-mount spr...
A hot-humid climatic wind tunnel and a multi-field coupling control system . A fan (18), a variable temperature device, a variable humidity device, a salt fog generator (8), a sky background radiation board (11), a solar radiation lamp array (12) and a rain generator (13) are mounted in a wind tunnel body (29). A wind speed sensor, a temperature se...
Under the dual background of urbanization and climate warming, the investigation of urban thermal environments has gradually become popular and gained abundant research results, involving the temporal and spatial distribution of urban heat islands, thermal environment and thermal comfort within the city, effects of the anthropogenic heat, and the e...
We conducted a climate chamber study on the thermal comfort of people in the hot and humid area of China. Sixty subjects from naturally ventilated buildings and buildings with split air conditioners participated in the study, and identical experiments were conducted in a climate chamber in both summer and winter. Psychological and physiological res...
The effects of air movement from ceiling fans on subjective thermal comfort and perceived air quality (PAQ) were examined for warm-humid environments. In a climate chamber controlled at three temperatures (26 °C, 28 °C and 30 °C) and two relative humidity (RH 60% and 80%), sixteen subjects (8 males and 8 females) dressed in summer clothing (0.5 clo...
Keywords: Airflow utilization Acceptable range Hot and humid area Indoor air quality Thermal comfort a b s t r a c t Airflow utilization is a traditional and effective way for people to improve their thermal comfort in summer in the areas of China that are hot and humid. We conducted a summer-long field study on nine naturally ventilated buildings...
Thirty female and 30 male college students, who had naturally acclimatized to hot-humid climate, were exposed to seven temperature/humidity combinations in a climate chamber, and they were surveyed all year long at their classrooms and dormitories. They dressed in 0.5 clo in the chamber tests, while their subjective and physiological responses were...
In this study we presented a new numerical method to calculate sky view factor (SVF) based on Rhino-Grasshopper platform, aiming to provide possibilities opportunity to evaluate detail distribution of SVF in scheme stage of buildings and urban. The procedure of calculation is briefly showed as follows: 1) the 3D database of scheme or site is import...
a b s t r a c t Occupants' thermal sensations, perceptions and behaviors in buildings with split air-conditioners in hot-humid area of China were systematically investigated for a whole year with longitudinal design. Thirty college students, naturally acclimatized to local climate and well experienced with the indoor envi-ronments of buildings, par...
The microclimate around a building, establishing through the interaction with other buildings or the natural environment, is a significant factor in the building energy consumption. This paper presents a method for the quantitative analysis of building energy performance under any given urban contexts by linking the microclimate model ENVI-met to t...
Ventilation cooling technology (VCT) has been widely used for the notable energy saving, low first costs and conveniences for application in China in recent years. A new control strategy of VCT was provided to guarantee the indoor air temperature and humidity environment and maximize the energy saving. A simulation evaluation method for the energy...
Presently, there have been few studies on the outdoor thermal environment and thermal comfort of campus clusters in subtropical climate urban areas. In this study, first we investigated the influence of various types of design elements on the outdoor thermal environment around campus clusters in subtropical urban areas, such as pilotis, squares, an...
In order to calculate the air temperature of the near surface layer in urban environment, the surface layer air was divided into several layers in the vertical direction, and some energy balance equations were developed for each air layer, in which the heat exchange due to vertical turbulence and horizontal air flow was taken into account. Then, th...
Simulating the outdoor thermal environment of Exhibition Center in Taizhou with the improved lumped parameter model to quantitatively analyze the contribution ratio of underlying surface materials, green and shading types for lowering the heat island intensity. The results show that tree shading improving the thermal environment is the most obvious...
A middle school in north china carries on reconstruction planning, uses of the Computational Fluid Dynamics method to simulate outdoor natural ventilation environment before and after its rebuilt, compares of simulation results. According to the result of that comparison, suggestions are advanced about human thermal comfort and energy conservation.
As a result of economic grows and human activity, environmental problems such as global warming, energy crisis, become severe. Windows, which is supposed to be the pivotal part of energy conservation, certainly gets more and more attention. In this paper, a new series of sliding window that are ideal for building energy conservation will be introdu...
Conducts experiments about different porous material veneered wall structures in hot-humid climatic wind tunnel in typical climate condition of Guangzhou .Based on the double-hest flow meter method, calculates equivalent thermal resistances of wet porous material veneered wall structures in the testing period and obtains heat insulation abilities a...
Based on field study and Site investigations, this paper obtains the relationship between thermal comfort and air temperature, air velocity, relative humidity and means radiant temperature of naturally ventilated houses in countryside of subtropical region. According to Fanger, one will feel good when the thermal comfort vote is in the interval [-1...
Room air conditioner (RAC) is widely used as a indoor thermal environment conditioning equipment in residential buildings, the characteristics of space cooling load influence RAC design and indoor environment dramatically. Space cooling load, including sensible cooling load and latent cooling load, sensible heat ratio (SHR) at different times are c...
The existing air handling units for clean room are introduced and a new energy-saving air handling unit in which air temperature and humidity is conditioned separately and two stage dehumidifiers are set is presented, the structure of the new type air handling unit is given and characteristics are provided, a project example is calculated and discu...
Polyvinylchloride (PVC) panel is one of the most favorite decorative materials that has been popularly applied as finishing
of ceiling in residential buildings. It is about five years that the people incline to redecorate the ceiling of old buildings
with PVC panel in big cities of Iran, such as Mashad. In this study, the influence of ceiling PVC p...
Human responses to thermal environments in naturally ventilated (NV) buildings in hot-humid area of China were systematically investigated in the present study. Thirty local inhabitants long-time living in NV buildings participated in the study and reported their thermal sensations and perceptions and adaptive behaviors while all physical and perso...
Climate chamber study, was performed by using 30 subjects living in the hot-humid area of China in the summer of 2009. The subjects dressed with the standard 0.6clo clothing were exposed to 6 transient conditions in the range of cool to warm and their subjective and physiological responses were collected. The results show that the subject's psychol...
Indoor natural wind environments, annual natural temperature distributions and annual energy consumptions under two different opening areas of the glass curtain wall are studied for an airport terminal building in order to investigate the potential of using natural ventilation. The numerical simulation results show that: when the opening ratio of t...
The building thermal insulation is an important technology of building energy efficiency. Taking the typical residential in the cold region-Beijing and those of South China-Guangzhou as the template, this paper has conducted simulation analysis on their respective energy consumption when adopt exterior thermal insulation walls or interior thermal i...
This paper analyzed the energy balance of extensive green roofs and presented a simple but practical energy balance model. Field experiment justified the validation and accuracy of this model. Experimental results demonstrated that within 24h of a typical summer day, when soil was rich in water content, solar radiation accounted for 99.1% of the to...
Based on the investigation to 59 residential buildings in China, this study establishes the prediction model of annual energy consumption of residential buidlings using four different modeling methods such as support vector machine (SVM), traditional back propagation neural network (BPNN), radial basis function neural network (RBFNN) and general re...
The summer outdoor thermal environments of a real residential building cluster in Guangzhou, China with different urban planning factors such as building layout, building coverage ratio, floor area ratio, first floor overhead ratio and green coverage ratio are investigated by the coupled CFD simulation of convection, radiation and conduction. The e...
In this paper, we employ support vector machine (SVM) and conventional artificial neural network to establish the prediction models of hourly cooling load in the building and the application cases in one office building and one library show that SVM method and conventional artificial neural network both can be effective for the prediction of hourly...
This paper concentrates on the thermal behavior of a Sedum lineare green roof in Guangzhou, a city located in South China with typical subtropical climate. A field experiment during summer period has been carried out. Based on experimental results thermal behavior of the Sedum lineare green roof is analyzed and some crucial conclusions are obtained...
In this work, the basic model of residential building clusers in South China is established, and computational fluid dynamics(CFD) method is used to simulate its outdoor wind environment. The relationship of some urban planning and design factors such as building layout, building coverage ratio, floor area ratio and first floor overhead ratio with...
The influence of a polyvinyl chloride (PVC)-panel on the cooling load of a residential apartment in Mashad, Iran, is analyzed by the DeST-h software. And the summer natural ventilation of the residential apartment is investigated to determine the wind speed into the apartment through the computational fluid dynamics software. The evaluation results...
This study uses the computational fluid dynamics (CFD) method to evaluate the natural wind environment of a high-rise residential building under two unit design schemes. The impacts of openings' location and size on the indoor wind environment are also investigated. After that, the optimization advices for the adverse design scheme are brought forw...
TBS buildings have large numbers, high energy consumptions and great potentials on energy conservation. Through field investigation of a typical TBS in Guangzhou, the basic information of TBS was achieved, the key factors influencing energy consumption of TBS were determined and several building energy efficiency designs were proposed. The effect o...
Especial type of mid-rise residential buildings has been built in Mashad(a big city inIran)during last two decades,which have vast eastern and western walls in contact with free air.These walls are the main factor of wasting energy in these apartments because these walls are vast(high amount of energy flux)and have conventional construction method(...
A climate chamber study was performed by using thirty subjects living in naturally ventilated buildings in hot-humid area of China with consistent experimental methods of the classic studies. The subjects dressed in standard clothing were exposed to conditions in a range from cool to warm and their subjective and physiological responses were collec...
Taking a certain housing in Guangzhou as an example, we conduct the field measurement of the microclimate at fixed points
for air temperature, relative humidity, black globe temperature and wind speed, etc. We investigate the effects of manmade
lake, shade of trees and ground surface character on outdoor thermal environment, and make a quantitative...
In this paper, support vector machine (SVM) is used to predict hourly building cooling load. The hourly building cooling load prediction model based on SVM has been established, and applied to an office building in Guangzhou, China. The simulation results demonstrate that the SVM method can achieve better accuracy and generalization than the tradit...
Located in hot and humid climate region, Guangzhou has strong solar radiation and abundant rain. Its potential of utilizing climate resource is great, and its possibility to realize passive cooling is high. The rain hours are over half of the total hours a year and the annual average rainfall can reach 1830.8 mm. Rain has been found that affect the...
This study used the computational fluid dynamics (CFD) method to evaluate the indoor thermal environment of an air-conditioned train station building under three types of air-conditioning design schemes. The impacts of air-conditioning design parameters such as supply air temperature, velocity, altitude and angle of incidence were also investigated...
Telecommunication base stations (TBSs) in Guangzhou, China are used in large numbers, and have high heat density, a long cooling season and high energy consumption. To make full use of natural outdoor cooling resources, a new ventilation cooling technology (VCT) is proposed. As the heat from the telecommunication equipment can be dissipated directl...
This paper studies the summer natural wind environments inside an airport terminal building under two cases by the method of computational fluid dynamics (CFD). The two cases have different opening areas for glass curtain wall. Case 1 has the opening ratio of 10% while Case 2 has 30%. The paper also uses DeST to simulate the annual natural temperat...
Solar penetration through the transparent envelope can severely deteriorate indoor thermal environment inside an atrium building particularly in tropical climates. This paper reports the application of two low-cost measures, namely high level internal solar blinds and water spray, to minimise overheating problems on the three levels inside the atri...
This study presents four modeling techniques for the prediction of hourly cooling load in the building. In addition to the traditional back propagation neural network (BPNN), the radial basis function neural network (RBFNN), general regression neural network (GRNN) and support vector machine (SVM) are considered. All the prediction models have been...
Landscaping design factors, like lakes and vegetations, have a large impact on microclimates and are considered an efficient mechanism for cooling communities. In order to evaluate different effects of landscaping design factors, a field measurement on outdoor environmental parameters were carried out in a residential community in Guangzhou, China....
Telecommunication base station (TBS) buildings have large numbers, high energy consumptions and great potentials on energy conservation. Through field investigation of a typical TBS in Guangzhou, the basic information of TBS was achieved, the key factors influencing energy consumption of TBS were determined and several energy efficient envelope des...
Yi Chen Ji Wu Fei Wang- [...]
Qinglin Meng
Telecommunication base stations (TBS) in Guangzhou in China have large numbers, high inner heat density, long cooling season and high energy consumption. In order to make full use of the outdoor natural cooling resource, a ventilation cooling technology (VCT) was proposed. By applying VCT the inner heat generated by the telecommunication equipments...
Natural ventilation has been used in Iran and the neighboring countries(which have hot and dry summer) for passive cooling of buildings for centuries.Normally the swamp-cooler utilize for cooling in the residential buildings of Mashad and other similar cities in Iran.In this paper,we tried to determine influence of natural ventilation on natural in...
Especial type of residential apartments has been built in Mashad(a big city in Iran) during last two decades,which have vast eastern and western walls in contact with free air.These walls are the main factor of wasting energy in these apartments because these walls are vast(high amount of energy flux) and have conventional construction method(high...
In uncomfortably warm areas and seasons of the year, passive cooling effects resulting from natural rainfall evaporation can greatly cut down on building energy consumption. To simulate the passive evaporation cooling effect and evaluate the relevant energy-saving potentials, hourly rainfall data are needed. However, in currently used building ener...
It is the goal of climate-adapting buildings to make used of the natural regularity to decrease indoor temperature and improve thermal comfort. In the aviation building in Sanya airport, the control mode of thermal environment—combination of natural ventilation, air modulation by mechanical fans and air-conditioning is promoted. The CFD software PH...
Rainfall simulation is a key problem for the evaluation of the energy saving potential of passive cooling by natural rainfall evaporation in humid and hot areas. Using a set of data in Guangzhou Area from weather bureau as the training sample, and the data generated by Medpha (Meteorological Data Producer for HVAC Analysis) as the testing sample, d...
Rainfall simulation is key problem for the evaluation of the energy saving potential of passive cooling by natural rainfall evaporation in humid and hot areas. This paper used a set of monthly, daily and hourly rainfall data in Guangzhou Area to identify the statistic feathers and distribution of the monthly, daily and hourly rainfall. A one-order...
Rooftop shading is an effective green building design strategy in subtropical areas; it can create an ecological rooftop space and produce energy savings for rooms on the top floor. This article describes the rooftop shading system of the Humanities Building at SCUT (South China University of Technology). A shading calculation software developed by...
A method of laying a layer of humid porous medium on roof to gain free cooling effect by passive water evaporation is proposed. Numeric model for simulating cooling effect is built with the help of experimental results of physical properties for humid porous medium, which shows advantage over analytical solutions because of the supposition of const...
The summer natural wind environments inside an airport terminal building under two cases are simulated by the method of computational fluid dynamics (CFD) in this paper. The two cases have different opening areas for glass curtain wall. Case 1 has the opening ratio of 10% while Case 2 has 30%. The paper also uses DeST to simulate the annual natural...
The summer outdoor thermal environment of a real residential building cluster in Guangzhou, China is investigated by the coupled simulation of convection, radiation and conduction. The effects of gross building coverage ratio, floor area ratio and first floor overhead ratio on outdoor thermal environment are discussed. The simulation results show:...
A 33-hour field measurement was conducted in two typical campus building clusters located in Guangzhou, China. Thirty measuring points were set and local climate data, air temperature, relative humidity, wind velocity, wind direction, WBGT at the pedestrian-level, ground surface temperature and etc. were measured. The experiment results show the ty...
The present paper makes a literature review on the study of urban microclimate in hot -humid region of China, especially Guangzhou, including the theoretical and simulation studies, and experimental and testing studies. Hot-humid region in China, including the Yangtse River and its south, has 2.6 million square kilometers in land area, 21 provinces...