Secondly, the solar optimized shape was inserted into an existing district in order to calculate the solar radiation incidence on the building envelope, considering the mutual effects among neighbouring buildings. From the parametric geometric transformations a set of optimized solutions are carried out, integrating generative design methods with energy performance evaluation [10]. The advantage of generative systems [11], constituted by a genetic algorithms and parametric systems, coupled with computational tools in the design process, is that a quick exploration can be made of an almost infinite set of variations, from which the best solutions can be selected [12].
The script can work both automatically and manually: automatically, by fixing the data input (urban fixed data) and solving with an evolutionary solver tool [13], combining all the shapes until the best one has been found; and manually, by fixing the data input and imposing the transformations. In this study, the second approach was selected, in order to conduct a sensitivity analysis on the variation parameters. The approach makes it possible to identify the optimized building volume and the numerical evaluation of the solar radiation incidence on the building envelope, in order to assess if façades can be exploited for energy production in dense urban areas. The analysis of basic models makes it possible to assess energy needs and to calculate potential energy production under different design conditions (height and size of buildings, distance between blocks, cladding materials, etc.). Legislation requires planners, architects and designers to comply with limits on solar access and right to light, and to be able to assess the impact of new buildings on surrounding buildings. It is therefore necessary to provide the required solar and daylight availability information for any urban area, in a visually meaningful way, so that a quick assessment can be made for both existing buildings and un-built sites. Solar access and right to light regulations can place specific limitations to the geometry of a scheme. Particularly during the early design phases it becomes necessary to use dynamic simulation tools to assess the solar and daylight potential of a site, even before a building is designed. All analyses are conducted by means of a highly accurate radiance-based solar calculator tool (Daysim [14] and DIVA [15]) simulating an initial scenario, a current design scenario, and an optimized design scenario. The research aims to validate the new multidisciplinary design approach for optimizing the volume of a building in existing urban areas,
Secondly, the solar optimized shape was inserted into an existing district in order to calculate the solar radiation incidence on the building envelope, considering the mutual effects among neighbouring buildings. From the parametric geometric transformations a set of optimized solutions are carried out, integrating generative design methods with energy performance evaluation [10]. The advantage of generative systems [11], constituted by a genetic algorithms and parametric systems, coupled with computational tools in the design process, is that a quick exploration can be made of an almost infinite set of variations, from which the best solutions can be selected [12].
The script can work both automatically and manually: automatically, by fixing the data input (urban fixed data) and solving with an evolutionary solver tool [13], combining all the shapes until the best one has been found; and manually, by fixing the data input and imposing the transformations. In this study, the second approach was selected, in order to conduct a sensitivity analysis on the variation parameters. The approach makes it possible to identify the optimized building volume and the numerical evaluation of the solar radiation incidence on the building envelope, in order to assess if façades can be exploited for energy production in dense urban areas. The analysis of basic models makes it possible to assess energy needs and to calculate potential energy production under different design conditions (height and size of buildings, distance between blocks, cladding materials, etc.). Legislation requires planners, architects and designers to comply with limits on solar access and right to light, and to be able to assess the impact of new buildings on surrounding buildings. It is therefore necessary to provide the required solar and daylight availability information for any urban area, in a visually meaningful way, so that a quick assessment can be made for both existing buildings and un-built sites. Solar access and right to light regulations can place specific limitations to the geometry of a scheme. Particularly during the early design phases it becomes necessary to use dynamic simulation tools to assess the solar and daylight potential of a site, even before a building is designed. All analyses are conducted by means of a highly accurate radiance-based solar calculator tool (Daysim [14] and DIVA [15]) simulating an initial scenario, a current design scenario, and an optimized design scenario. The research aims to validate the new multidisciplinary design approach for optimizing the volume of a building in existing urban areas,
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