摘要
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 cross-wavy surface recuperator, the heat transfer coefficients of a cross-wavy surface recuperator for typical 100 kW microturbine were measured though experiments, and the method of separating convective heat transfer coefficients from overall heat transfer coefficient was proposed by using genetic algorithm. The method used four coefficient variables in heat transfer correlation as the optimization variables to be searched and optimized so as to acquire the coefficients of the correlation for predicting heat transfer coefficient and separate the convective heat transfer coefficient successfully from the overall heat transfer coefficient. This separating method is common and can be conveniently and flexibly used to study the heat transfer law of such kind of reeuperator. The heat transfer coefficients predicted agree well with the experimental data, and can exactly reflect the actual heat transfer law.
出处
《动力工程》
CAS
CSCD
北大核心
2009年第11期1027-1030,1035,共5页
Power Engineering
关键词
遗传算法
交错波纹板换热器
表面传热系数
分离
genetic algorithm
cross-wavy surface recuperator
convective heat transfer coefficient
separation
