BIM-based analysis of energy efficiency design of building thermal system and HVAC system based on GB50189-2015 in China

Abstract

Recently, the application of building information modeling (BIM) in building energy efficiency design programs has been emphasized in research. In China, faced with requirements in building energy efficiency design standards and specifications, researchers have been using BIM as a platform for breaking up bottlenecks in energy simulation and design software, and BIM is considered the key to improve the efficiency of building energy efficiency design. Firstly, based on the trade-off energy consumption judgment method proposed in the ‘Public Building Energy Efficiency Design Standard (GB50189-2015)’, this study combines the BIM platform with an orthogonal simulation design adopting an experimental building construction project in a cold region of China, to thereby study the influences of different envelope structural parameters on cooling and heating loads. Then, this study analyzes the continuity and consistency of data exchange between different BIM-related software, through the modeling software Revit and the sustainable analysis software Ecotect. Finally, through the experiment, the critical factors of the optimized design of the building envelope are investigated and applied for the optimized design of the building thermal system. In addition, this study uses BIM to complete an energy efficiency design for a laboratory heating, ventilation and air conditioning (HVAC) system. According to the experimental results, the following conclusions can be drawn: this study proposes a BIM-based optimized design method of building thermal system, which complies with various Chinese building energy efficiency standards and polices and can be used as a reference for Chinese designers. Also, the issues and challenges in building consumption simulation based on BIM technology and the application of BIM technology in the design of building thermal HVAC systems are discussed, and the development trends of BIM technology in China are analyzed. Building thermal system and HVAC system design are the key points of building efficiency design. The optimized design method proposed in this paper is of great significance to this system design. The optimized design method can improve the design efficiency of designers while complying with China’s standards and policies. Therefore, it can save costs, improve the economic benefits of the projects and, at the same time, obtain an ideal building efficiency design.

An Evaluation Model of Urban-Rural Exchange Teachers in Elementary School Based on Optimal Control Neural Network

“…erefore, strengthening this aspect of analysis can provide a good theoretical reference for the optimization of the teaching methods of urban and rural elementary school mathematics classrooms. In addition, studying the differences between urban and rural elementary school mathematics classroom teaching styles is conducive to the general strategies and approaches to improve the efficiency of rural elementary school mathematics classroom teaching to promote the common development of teachers and students, to provide a basis for education departments or schools to develop more reasonable solution strategies in the future and to provide some practical suggestions or ideas to narrow the gap between urban and rural education, and eventually narrow the gap between urban and rural education [4]. In addition, through classroom field observation and recording the real teaching situation in classrooms, we can compare the advantages and disadvantages of urban and rural education in terms of classroom introduction, teaching process, and teaching summary and learn the strengths of teaching in urban schools, to provide theoretical support and realistic basis for abandoning the old teaching concepts and updating teaching behaviors in rural areas, which are conducive to the realization of equitable educational development [5].…”

Building Information Modeling/Building Energy Simulation Integration Based on Quantitative and Interpretative Interoperability Analysis

“…Zhao et al [12] performed a BIM/BES interoperability test between Revit and Ecotec based on the modeling of a laboratory in China and concluded that the BIM/BES interoperability is not resolved and that Revit is limited in the insertion of a system input data HVAC. Porsani et al [13] performed a BIM/BES interoperability test comparing two models, one simple and the other complex, and exported from Revit 2020 to the BES software with the Energyplus engine (DesignBuilder, OpenStudio, and CYPETHERM HE), with the gbxml format for DesignBuilder and OpenStudio and the IFC format for CYPETHERM HE.…”

“…Several authors have pointed out that data transfer between BIM/BES has not been resolved since there is data loss between them, requiring tests to identify the BES programs with better performance in this aspect [12,13,15,18,40]. Other authors analyzed the BES program with better integration with BIM also in an interpretative way, analyzing criteria such as usability and information management [14].…”

Performance diagnosis and optimization of building system based on building information model

“…At the present stage, the economic expenditure and safety performance of building construction are all analyzed by artificial methods, which are greatly influenced by the subjective factors of analysts, have strong limitations by analysts themselves, and have relatively low analysis efficiency. More and more business leaders have begun to pay more attention to the information management model, constantly optimize the information management model in the process of building construction, and call it an important method of enterprise engineering management [5].…”