1种管壳式冷凝器优化设计新方法

A New Method for Optimal Design of Shell and Tube Condenser

针对现有管壳式冷凝器设计方法不能保证设计解的全局优化性的问题,提出了1种管壳式冷凝器详细设计的新方法,通过枚举获取所有可能的组合方案,筛选出符合设计要求的全局优化解。以最小化换热面积为目标函数的优化结果显示,选择不同头型的冷凝器对换热面积优化的影响并不明显,与文献相比仅减少了1.29%,但头型的选择会影响冷凝器中管束的排布方式。还给出了不同换热面积条件下的最小冷凝器功耗,做出了功耗与换热面积之间的权衡,权衡方案条件比最小换热面积方案下的功耗降低了78.80%,而换热面积仅增加了3.73%。该方法无需设定初值,不依赖商业求解器,且能保证设计解的质量。

Aiming at the problem that the existing design method of shell-and-tube condenser cannot guarantee the global optimization of design solution, a new method for detailed design of shell-and-tube condenser is proposed. All possible combination schemes are obtained by enumeration, and the global optimization solution that meets the design requirements is selected. The optimization results with the objective function of minimizing the heat transfer area show that the influence of condenser with different head shapes on the optimization of heat transfer area is not obvious, which is only reduced by 1.29% compared with the literature, but the selection of head shape will affect the arrangement of tube bundles in the condenser. The minimum condenser power consumption under different heat exchange area conditions is also given, and the trade-off between power consumption and heat exchange area is made. The power consumption of the trade-off scheme is 78.80% lower than that of the minimum heat exchange area scheme, while the heat exchange area is only increased by 3.73%. This method does not need to set initial value, does not depend on commercial solver, and can guarantee the quality of design solution.