The solar protection systems avoid direct sunlight shafts incidence contributing to the luminous, thermal and energetic performance of edifications. In some regions, like the south of Brazil, where the variation of te...The solar protection systems avoid direct sunlight shafts incidence contributing to the luminous, thermal and energetic performance of edifications. In some regions, like the south of Brazil, where the variation of temperature is wide, the control of solar radiation incidence is even more required. Besides, the use of the vertical and mobile brise-soleil in facades which radiations affect with larger angles, as east and west facades, is more appropriate. The possibility to make this automatic movement would make its utilization and manipulations easier, adjusting the opening angulation according to the user desire and the environmental criterion of the period as well. In this way, the main goal of this work is the development of a parametrical and automatized brise-soleil prototype, aiming its application in architecture and construction. The relation between elements of solar protection and automation can contribute to a greater environmental efficiency and user convenience.展开更多
Although gradual, the changes in the weather patterns are also noticeable and impactful to architectural design. If the local microclimate is taken into account early in the conceptual stage of design, the longevity o...Although gradual, the changes in the weather patterns are also noticeable and impactful to architectural design. If the local microclimate is taken into account early in the conceptual stage of design, the longevity of the ultimate structure can be greatly enhanced, despite challenging environmental factors. Parametric designing enables to discover the optimal architectural shape based on specific weather data. The paper intends to investigate how this design approach, coupled with Computational Fluid Dynamics simulations, can be used to create a wind-induced architecture. Both the benefits and the limitations of this approach are explored in detail. The interaction between an architectural shape and wind flow is tested in a study called ‘FlowBrane’. The process of （1） designing a parametrically changeable geometry, （2） testing its behavior in the wind, and （3） evaluating the results allows looping back to the initial geometric design, continuing to improve the design and ultimately the performance of the architecture in the specific wind conditions of the chosen site. However, the need to test multiple geometries separately and to adjust the wind simulation for each test （and for every wind direction） remains a disadvantage that should be addressed in further research.展开更多
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 2030.As a good alternativ...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 2030.As a good alternative to coal power,renewable resources can produce the required energy for Australia while keeping the environment clean.The 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 unsatisfactory.In Perth,the sunniest city in Aus-tralia,one-third of the residential dwellings have roof-mounted solar collector systems.However,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 conditions.Therefore,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 year.To reach this aim,a combination of analytical modelling,numerical simulation,and evolutionary algorithm methods have been selected.At first,a series of detailed mathematical calculations were performed in Excel to find the optimum solar collector mounting settings.In 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 architecture.In 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 context.Our 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 annually.Moreover,this study advances the knowledge of solar capturing by suggesting a new parameter-oblique angle-in finding the optimum roof shape design.After evaluating the importance of the mentioned factors,it is found that,after tilt angle,the oblique angle is the most effective parameter in rooftop solar gaining,higher than roof aspect ratio and azimuth angle.In conclusion,our results demonstrate that an‘oblique shed roof design’can generate 15.7%higher solar radiation compared to the base case.The findings of this study can be applied by architects,construction companies,and householders to optimize the solar gaining in the future of the residential building in Perth.展开更多
文摘The solar protection systems avoid direct sunlight shafts incidence contributing to the luminous, thermal and energetic performance of edifications. In some regions, like the south of Brazil, where the variation of temperature is wide, the control of solar radiation incidence is even more required. Besides, the use of the vertical and mobile brise-soleil in facades which radiations affect with larger angles, as east and west facades, is more appropriate. The possibility to make this automatic movement would make its utilization and manipulations easier, adjusting the opening angulation according to the user desire and the environmental criterion of the period as well. In this way, the main goal of this work is the development of a parametrical and automatized brise-soleil prototype, aiming its application in architecture and construction. The relation between elements of solar protection and automation can contribute to a greater environmental efficiency and user convenience.
文摘Although gradual, the changes in the weather patterns are also noticeable and impactful to architectural design. If the local microclimate is taken into account early in the conceptual stage of design, the longevity of the ultimate structure can be greatly enhanced, despite challenging environmental factors. Parametric designing enables to discover the optimal architectural shape based on specific weather data. The paper intends to investigate how this design approach, coupled with Computational Fluid Dynamics simulations, can be used to create a wind-induced architecture. Both the benefits and the limitations of this approach are explored in detail. The interaction between an architectural shape and wind flow is tested in a study called ‘FlowBrane’. The process of （1） designing a parametrically changeable geometry, （2） testing its behavior in the wind, and （3） evaluating the results allows looping back to the initial geometric design, continuing to improve the design and ultimately the performance of the architecture in the specific wind conditions of the chosen site. However, the need to test multiple geometries separately and to adjust the wind simulation for each test （and for every wind direction） remains a disadvantage that should be addressed in further research.
基金This work was supported by the University of Western Australia and the Government of Western AustralianThe first author also gratefully acknowledges the Science-Industry Fellowship form the Western Aus-tralia Department of Jobs,Tourism,Science and Innovation(Awarded to S.K.E).
文摘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 2030.As a good alternative to coal power,renewable resources can produce the required energy for Australia while keeping the environment clean.The 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 unsatisfactory.In Perth,the sunniest city in Aus-tralia,one-third of the residential dwellings have roof-mounted solar collector systems.However,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 conditions.Therefore,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 year.To reach this aim,a combination of analytical modelling,numerical simulation,and evolutionary algorithm methods have been selected.At first,a series of detailed mathematical calculations were performed in Excel to find the optimum solar collector mounting settings.In 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 architecture.In 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 context.Our 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 annually.Moreover,this study advances the knowledge of solar capturing by suggesting a new parameter-oblique angle-in finding the optimum roof shape design.After evaluating the importance of the mentioned factors,it is found that,after tilt angle,the oblique angle is the most effective parameter in rooftop solar gaining,higher than roof aspect ratio and azimuth angle.In conclusion,our results demonstrate that an‘oblique shed roof design’can generate 15.7%higher solar radiation compared to the base case.The findings of this study can be applied by architects,construction companies,and householders to optimize the solar gaining in the future of the residential building in Perth.
