CAJ | 학술논문

为了优化结霜工况下翅片管式空气冷却器的结构设计，提出经济性分析计算模型。综合考虑换热性能、材料成本及运行费用，以单位制冷量的费用年值为目标函数，以费用年值最小为优化目标求解经济模型得到合理的空气冷却器的结构参数，分析了翅片间距、换热管管径、管排数变化对目标函数的影响，并通过一冷库案例进行实际测试验证。计算及试验结果表明：随着翅片间距的增大，目标函数先减小后增大，翅片间距为10时目标函数取极小值；在相同翅片间距的情况下管径越大，其目标函数值也越大；综合考虑换热管直径、翅片间距和管排数的影响，翅片间距为10，换热管外径为9．52，管排数为6时，目标函数取极小值。
위료우화결상공황하시편관식공기냉각기적결구설계，제출경제성분석계산모형。종합고필환열성능、재료성본급운행비용，이단위제랭량적비용년치위목표함수，이비용년치최소위우화목표구해경제모형득도합리적공기냉각기적결구삼수，분석료시편간거、환열관관경、관배수변화대목표함수적영향，병통과일랭고안례진행실제측시험증。계산급시험결과표명：수착시편간거적증대，목표함수선감소후증대，시편간거위10시목표함수취겁소치；재상동시편간거적정황하관경월대，기목표함수치야월대；종합고필환열관직경、시편간거화관배수적영향，시편간거위10，환열관외경위9．52，관배수위6시，목표함수취겁소치。
Inthepresentstudy,aneconomicanalysismodeloffinandtubeaircoolerunderfrostingconditionwasproposedby considering the heat transfer performance,material costs and the energy consumption.Annual cost of refrigerating capacity per W was set as the objective function;the minimum of the objective function was set as an optimization goal.To solve the model and get the reasonable structural parameters of the air cooler,and analyzes the influence of the structural parameters such as fin pitch,heat exchange tube diameter to the objective function,and verify the model by testing in a cold storage.The experimental and calculat-ed results show that:with the fin pitch increases,the objective function first decreases and then increases,and gets a minimum val-ue when fin pitch is 10mm.With the same fin pitch,the greater of tube diameter,and the greater value of the objective function. By considering the fin pitch,heat exchange tube diameter and tube row number,the objective function value is minimum when fin pitch is 10,heat exchange tube diameter is 9.52 and the tube row number is 6.