OPTIMUM DESIGN OF HEAT-EXCHANGER NETWORK BASED ONOBJECT ORIENTED TECHNOLOGY

摘要

Heat Exchanger Network (HEN) Optimum Designrnhas become a special field of the process systemrnengineering. It has been made a remarkable progress inrntheory and application by far. The artificial intelligencern(AI) graphical method was used in optimum design ofrnHEN analytically. It is very simple and efficient. In thisrnpaper, an optimum design system of HEN, whichrnintroduces object-oriented technique (OOT) and accordsrnwith the standard of CAPE-OPEN, is developed on thernbasis of AI graph method. According to the characteristicsrnof OOT, three hierarchy classes are designed, which arernthe graph class of user hierarchy, the synthesis class ofrnsolving hierarchy as well as the component class andrnstream class of basic hierarchy. The model and solver inrnthe system are designed separately, so it is open, and canrndraw the sketch map automatically after the optimumrndesign of HEN is completed. Two examples are illustratedrnat the last in the paper, and the results show the system isrnstable, credible and efficient.