Re-exploitation Of AutoCAD And Optimization Analysis On Water-Lithium Bromide Absorption Refrigerator

A Water-Lithium Bromide Absorption Refrigerator (WLBAR) is driven by several thermal energy with Lithium Bromide solution as the working fluid. As the great harm to ozonosphere by CFCs and today's poor power supplies, WLBAR becomes more and more popular because of its advantages, refrigerator less power needing and excluding CFCs.In the traditional design and calculation of WLBAR, physical properties of Water-Lithium Bromide solution must be gotten by lots of charts and empirical formulas, so they need complex calculation and large workload. But with computer aided design (CAD) to research and develop absorption refrigerator, we can save energy and reduce loss, decrease equipment investment, increase design quality and efficiency and shorten the development cycle of products.Optimization design with determination of kinds of parameters make the refrigerator system get a design program with the best technical and economical index. In recent years, because optimization analysis receives constantly the successful experience of application on mechanical design process, we put optimization analysis and software in CAD.This paper presents the practical technology of the second development of AutoCAD and optimization design on design of a steam heated lithium bromide absorption refrigerator with ObjectARX2002 and VC++6.0. The paper explains the binocular structural of the steam heated lithium bromide absorption refrigerator through a case and shows the structure drawings of the upper cylinder, the lower cylinder and solution heat exchanger. The optimization design model for a lithium-bromide absorption in which steam is a heat reservoir is solved by using the complex optimization algorithm. Practical cases with different objective functions are calculated and analyzed. Compared optimal results with ones without optimization, proposed model and optimization method are effective.