化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2012年
11期
2390-2394
,共5页
层流%有效传热温差%插入物%粗糙肋面%复合强化传热
層流%有效傳熱溫差%插入物%粗糙肋麵%複閤彊化傳熱
층류%유효전열온차%삽입물%조조륵면%복합강화전열
laminar flow%effective heat-transfer temperature difference%inserts%rough rib surface%compound heat transfer enhancement
从层流流体有效传热温差的新视角出发,分析与探讨了换热器层流传热的强化理论。首先对层流流体有效传热温差的现象、细节及其变化规律进行了分析,揭示了采用插入物强化层流传热的内在强化机理,探讨了有效传热温差缓变特性的合理利用方法,提出了改善层流有效传热温差的寻优途径;其次,分析研究了缩放管粗糙传热肋面与插入物相配合的协同传热强化机理,揭示了粗糙肋面协助改善层流有效传热温差的作用与规律。
從層流流體有效傳熱溫差的新視角齣髮,分析與探討瞭換熱器層流傳熱的彊化理論。首先對層流流體有效傳熱溫差的現象、細節及其變化規律進行瞭分析,揭示瞭採用插入物彊化層流傳熱的內在彊化機理,探討瞭有效傳熱溫差緩變特性的閤理利用方法,提齣瞭改善層流有效傳熱溫差的尋優途徑;其次,分析研究瞭縮放管粗糙傳熱肋麵與插入物相配閤的協同傳熱彊化機理,揭示瞭粗糙肋麵協助改善層流有效傳熱溫差的作用與規律。
종층류류체유효전열온차적신시각출발,분석여탐토료환열기층류전열적강화이론。수선대층류류체유효전열온차적현상、세절급기변화규률진행료분석,게시료채용삽입물강화층류전열적내재강화궤리,탐토료유효전열온차완변특성적합리이용방법,제출료개선층류유효전열온차적심우도경;기차,분석연구료축방관조조전열륵면여삽입물상배합적협동전열강화궤리,게시료조조륵면협조개선층류유효전열온차적작용여규률。
Effective heat-transfer temperature difference(EHTD) was applied in the investigation of the heat-transfer enhancement theory with laminar flow in heat exchanger.Investigation was performed on the phenomenon,details and the law of EHTD,which reveals the intrinsic mechanism of laminar heat transfer enhancement with inserts.The suitable utilization method of the slowly varying characteristic of EHTD was discussed,and the optimization approach to improve EHTD was put forward.Collaborative heat-transfer enhancement mechanism for rough rib surface with inserts in heat-transfer channels was analyzed,which reveals the effect and law of EHTD improved by the rough rib surface in laminar flow.
