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Optimizing the solar energy capture of residential roof design in the southern hemisphere through Evolutionary Algorithm

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能源与人工环境(英文) 2021年第4期2卷 406-424页

作者： saleh kaji esfahani Ali Karrech Robert Cameron Mohamed Elchalakani Rosangela Tenorio Fernando Jerez The Faculty of Arts BusinessLaw and EducationSchool of DesignUniversity of Western Australia6009 PerthWestern AustraliaAustralia Faculty of Engineering and Mathematical Sciences School of EngineeringUniversity of Western Australia6009 PerthWestern AustraliaAustralia The Australian Urban Design Research Centre University of Western Australia6000 PerthWestern AustraliaAustralia

Australia’s national energy system is heavily reliant on coal-fired power plants and requires quick action to de-crease CO_(2)emissions in order to meet the Paris climate change agreement by *** a good alternative to coal power,renewable resources can produce the required energy for Australia while keeping the environment *** annual amount of falling solar irradiation in Australia is a few thousand times higher than its energy consumption,but the amount of the collected solar energy is *** Perth,the sunniest city in Aus-tralia,one-third of the residential dwellings have roof-mounted solar collector ***,there have been limited studies into the integration of these systems in building design and it is still unknown which roof design can deliver maximum efficiency based on the local environmental ***,the aims of this study are to determine the optimum residential roof design in Perth,Western Australia and to maximise extracted solar power throughout a *** reach this aim,a combination of analytical modelling,numerical simulation,and evolutionary algorithm methods have been *** first,a series of detailed mathematical calculations were performed in Excel to find the optimum solar collector mounting *** the numerical simulation,the exam-ination was repeated in the Rhino-Grasshopper interface to verify the earlier findings and calibrate the chosen simulation package with the help of parametric *** the last step,a wide range of housing roof shapes has been tested by evolutionary algorithm plugin-Galapagos,to find the optimum roof shape design in the given *** results show that,unlike the traditional approach and common belief,a roof shape with a 25-degree tilt angle,170-175 azimuth angle,and aspect ratio of 1:1.2 is optimum to gain maximum solar gaining ***,this study advances the knowledge of solar capturing by suggesting a new parameter-oblique angle-in finding the op

关键词： Parametric architecture Solar gaining Roof form optimization Evolutionary algorithm

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Effects of different land-use systems (grazing and understory cultivation) on growth and yield of semi-arid oak coppices

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Journal of Forestry Research 2020年第6期31卷 2235-2244页

作者： Ali Soltani Hamdollah Sadeghi kaji saleh Kahyani Department of Forest Science Faculty of Natural Resources and Earth SciencesShahrekord UniversityP.O.Box 115ShahrekordIran

The present study examines the extent of negative eff ects of traditional multiple land-use systems on oak coppices,from a forest management point of *** study area was located in approximately 10,000 ha of hilly Brant’s oak(Quercus brantii Lindl.)woodlands in the central Zagros *** the same site-quality class,three land-use systems were compared:simple coppice(Co),coppice in conjunction with small ruminant grazing(CoG),and coppice with understory rain-fed wheat cultivation plus grazing(CoCG).Data on total wood volume of trunk and major branches,and annual ring growth,were collected and analyzed from 74 stands in 15 coppiced woodland *** results showed the advantage of Co over CoG and CoCG land-uses by 43 and 60 m 3 of mean accumulated wood volume per hectare,*** diameter growth analysis also revealed an annual increase in wood production of trees in Co land-uses over 43 years,with an exception of the recent decade,when growth coincided with a severe *** a back-extrapolation method,the minimum rotation age of woodlands in Co land-use was found to be 23.6 years,5 and 7 years shorter than those of CoG and CoCG land-uses,*** CoCG,woodlands located in Co and CoG land-use systems demonstrated a high level of agreement with self-thinning rule of−3/*** for the stand density index for coppiced oak woodlands were between more than 1000 for the least disturbed(Co)and less than 400 for the most disturbed woodlands(CoCG).The structure and growth rate of the coppiced oak woodlands were irreversibly disrupted by understory tillage plus grazing and in less extent by grazing *** was concluded that ending undergrowth cultivation in semi-arid oak coppices should be addressed as a priority by adopting minimum regulations.

关键词： Coppicing Land-use impact assessment Diameter growth Multi-purpose land-use Self-thinning rule Stand density index

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