Research And Development Of Intelligent Design Software Of Shell-and-tube Heat Exchanger

Heat exchanger is widely applied in the process of chemical engineering, electric power, metallurgy, petroleum refinery and sewage treatment, and it occupies extremely significant position in industrial. As a result of excessively interactive variable in the design of heat exchanger, it’s challenging to choose the optimum structure style and dimension. Therefore, using CAD (Computer Aided Design) tech is feasible to get rid of complicated and experiential calculation in design of shell-and-tube heat exchanger.This dissertation is concentrating on the development of shell-and-tube heat exchanger intelligent CAD software.In accordance with operation principle, analyze heat transfer, flow condition and mechanical strength in the heat transfer. Build shell-and-tube heat exchanger system model as well as communication between every single subsystem with the help of UML (Unified Modeling Language) and incremental fountain model. Discuss the advantage and significance of intelligent algorithm applied in optimum design process of heat exchanger, and use genetic algorithm and variable in structure selection to optimize the design. Meanwhile, study the function of parameterization design and graphic export according to the theory of secondary development, which further connects the system with SolidWorks API, quotes the standard components, draws parts, assembly and drawings of above.Lastly, have the software testing by object-oriented method and run the case of fixed tube-sheet heat exchanger. Compared to the design result of tradition method relies on document and experience, the design scheme which is using genetic algorithm for optimum design of tube diameter, tube pitch, tube angle, tube pass, baffle space and baffle cut, has a significant increase of43.53%in total quantity of heat transfer, as the overdesign of pressure drop is kept from65.01%to10.13%which precisely satisfies the design demand of10%, and this makes the perfect use of bump in the heat exchanger system. In addition, the concurrent design of drawings makes the real-time vary of dimensions and structures of assembly and drawing possible as changes occur in the calculation or dimensions of parts, and updates the design results anytime as the input data changes.The shell-and-tube heat exchanger intelligent design software with CAD tech and intelligent algorithm is the tool optimize the whole life circle of heat exchanger, which takes design scheme as representative, promotes design efficiency and shorten the construction circle of heat exchanger.