Computer-aided Design Of Home Central Air-Conditioning System

The rapid development of computer technology and information technology has brought revolution in building design technology, also supplied a useful tool for the design of air-conditioning system at the same time. In this paper, three-dimensional modeling and the new ideas of building information model being combined, carried out on the research of home central air-conditioning system design software development.The main line of the research is design process of Home central air-conditioning, combined with the features of powerful three-dimensional parametric model in SketchUp, and with the software platform of SketchUp,use Ruby and network programming language, a secondary development is applied to SketchUp software. Initial realized three functions: home central air-conditioning system load calculations, equipment selection and modeling three-dimensional parametric design capabilities. The main conclusions are as follows:(1) Based on the research of the application environment with SketchUp and network-based data. Established the basic theory of three-dimensional parametric design software of home central air-conditioning system. Covered the initial parameter input, building cooling load calculation, equipment automatic selection and plug-in interface. The early stage of the software programming design considering the three-dimensional parametric modeling, building information modeling technology and network technology.(2) Implemented parameters input and equipment selection functions in a network environment, by application the concept of the building information model. Unified data structure, built a network model database and a parameter database and programmed a transfer function of network database and local software.(3) Complete software development of Home central air-conditioning system design with Web-based environment, and proved the functions through application. The result show that using the software can improve the air conditioning system load calculations work efficiency and reduce the selection time of air-conditioning system equipment design.(4) The design plug-in of Home central air-conditioning make intuitive design rapid change three-dimensional model, thus breaking the traditional designs on the designer's ideological restraints. Building information model based software design, has some reference value to HVAC, structure, drainage and other architectural design software development.