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为了获得交错波纹板换热器表面对流换热规律,通过实验测定了典型100 kW微型燃气轮机交错波纹板换热器的传热系数,提出了采用遗传算法将表面传热系数从传热系数中分离出来的方法.该方法以换热准则关系式中4个系数变量作为待寻找最佳值的待求变量,并进行搜索和优化,由此获得关联式系数来预测传热系数,成功分离出表面传热系数.该分离方法具有通用性,可灵活方便地研究各种此类换热器的传热性能.所预测的传热系数与实验获得的传热系数接近,能准确地反映换热的真实规律.
In order to obtain the convective heat transfer law of the surface of staggered corrugated plate heat exchanger, the heat transfer coefficient of the corrugated plate heat exchanger of a typical 100 kW micro gas turbine was experimentally determined. The genetic algorithm was used to separate the surface heat transfer coefficient from the heat transfer coefficient The method takes the four coefficient variables in the heat transfer criterion as the variables to be searched for the optimal value and searches for and optimizes the correlation coefficient so as to predict the heat transfer coefficient and successfully separate the surface Heat transfer coefficient.The separation method has the versatility to flexibly and conveniently study the heat transfer performance of various heat exchangers.The predicted heat transfer coefficient is close to the experimental heat transfer coefficient and can accurately reflect the heat transfer True law.