CAJ | 학술논문

翅片排列方式影响换热器的换热系数．以翅片排列顺序不同的错列式和直列式翅片换热器作为研究对象，采用数值分析手段，分析并比较不同翅片排列方式的套管换热器与光管换热器的换热系数．研究结果表明，翅片换热器换热系数比光管套管换热器换热系数分别提高了87.8％与98.2％，同时压降分别增加了35.1％和37.6％．错列式翅片换热器比直列式翅片换热器换热系数提高了5.2％．
시편배렬방식영향환열기적환열계수．이시편배렬순서불동적착렬식화직렬식시편환열기작위연구대상，채용수치분석수단，분석병비교불동시편배렬방식적투관환열기여광관환열기적환열계수．연구결과표명，시편환열기환열계수비광관투관환열기환열계수분별제고료87.8％여98.2％，동시압강분별증가료35.1％화37.6％．착렬식시편환열기비직렬식시편환열기환열계수제고료5.2％．
The pattern of finned array affects the heat transfer performance of a heat exchanger.The heat transfer coefficient of tube and shell heat exchanger with and without a finned array is investigated by computational fluid dynamics.The results reveal that the heat transfer coefficient of shell and tube heat exchanger with in-line-fin and staggered-fin increases by 87.8% and 98.2% of that without finned array,respectively,and with 35.1%and 37.6% increments of pressure drop correspondingly.The heat transfer coefficient of heat exchanger with staggered-fin is increased to 5.2% compared with that with in-line-fin array.