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동의어 포함

초록보기

An experimental investigation based on a transient inverse heat conduction approach aiming to improve thermal performance of waste heat recovery heat exchangers was conducted. The transient heat transfer from a main tube of diameter (D) at constant heat flux condition and cross-flow of air at Reynolds number 15000 was investigated using thin tube of six different diameters (d) from 7.5 mm to 15 mm. A thin tube was placed upstream to the main tube at six different spacing from 0.75D to 2D. Results shows that the heat transfer influenced by diameter ratio d/D and spacing ratio L/D has distinct phenomenon in three regimes: quiescent, protuberance, and vortex-shedding. Combined effect of flow blockage area and available gap between the thin and main tubes has great influence on thermal enhancement factor. Low diameter ratio exhibits thermal enhancement of about 12.5±2.5 % attaining maximum for d/D=0.25, L/D=1.75.

권호기사

권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
기사명 저자명 페이지 원문 목차
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