Parametric Optimization Study On Thermal Buffer Zone Of High-rise Office Building In Hot-humid Regions

Thermal buffering zone,which is common in hot and humid areas,has been widely recognized and applied in architectural design because of its advantages including comfort,rich architectural form,effective improvement on building thermal environment and energy saving ability.Nevertheless,attributing to the lack of optimization design methods for thermal buffer space,it is difficult to meet the requirements of green optimization design and achieve high space design quality.In order to realize efficient and reasonable performance evaluation and optimization,it is urgent to carry out the research on optimization design method and develop optimization design platform for thermal buffering zone.This research employed the thermal buffer zone in typical high-rise office buildings in Guangzhou as the research object.Targeted at the common inlaid and wrapped space shapes,the performance evaluation method and calculation model were defined,the performance influencing factors were extracted,the optimization design platform was developed,and the influence rules of each factor on the performance are discussed for improving the comfort of space and richness of sight lines,reducing the energy consumption of the building,and clarifying the performance evaluation.Based on the the theory of human-computer interaction,the parametric optimization platform was developed by using the parametric platform Grasshopper,the performance simulation tool Ladybug Tools and the python language.The platform includes three modules:building environment information,program performance evaluation calculation,and program optimization and output.The designer could interact with the platform through the information input terminal and the program output terminal to achieve flexible adjustment of performance indicators and optimization parameters.Through multi-objective optimization,a variety of optional morphological solutions for designers are generated.The performance of solutions could be improved by 1.37%-3600%,which effectively promoted the design effect of the thermal buffer space.The optimization strategy is presented as the result of ranking and valuing selection of the influence degree of design parameters on single or multiple performances.The key parameters should be given particular attention in the design process,for example,in order to optimize the inlaid thermal buffer zone for space comfort,focus should be placed on the opening ratio,area constraint factor,form and facade position.The design priority order and value recommendations are: Smaller opening ratio>area constraint factor>smaller aspect ratio>smaller aspect ratio,Inner concave type>Bottom layout of the facade>less number>Southfacing layout>Plane middle layout.For another example,in order to achieve the trade-off optimization of the wrapped thermal buffer space with space comfort and richness of sight,the depth,form and facade position should be noticed.The design priority order and value suggestion are: larger depth,single\double corridor Style>The position of the middle and lower part of the elevation>South-facing layout>more number.In the case verification,the developed optimization platform and the proposed design strategy effectively guided the design of thermal buffer zone,improved design efficiency and accuracy,strengthened the consideration of composite performance,and provided ideas for the shape design of high-rise office buildings.In general,this research has laid a solid scientific foundation for thermal buffer zone in hot and humid areas optimize design.