教師資料查詢 | 類別: 期刊論文 | 教師: 康尚文 KANG SHUNG-WEN (瀏覽個人網頁)

標題:Visualization and thermal resistance of a sintered wicks structure evaporator in a two phase loop thermosyphon
學年102
學期2
出版(發表)日期2014/07/01
作品名稱Visualization and thermal resistance of a sintered wicks structure evaporator in a two phase loop thermosyphon
作品名稱(其他語言)
著者KANG, Shung-Wen; HUANG, Chun-Hsien; CHEN, Yu-Tang
單位淡江大學機械與機電工程學系
出版者Tokyo: Japan Society of Mechanical Engineers
著錄名稱、卷期、頁數Journal of Thermal Science and Technology 9(2), 14-00078(10pages)
摘要A prototype two-phase loop thermosyphon (TPLT) was built and tested for thermal performance. This experimental study simultaneously investigated the evaporator resistance and flow visualization in operating the TPLT under sub-atmospheric pressure. To facilitate the visualization of flow regime in the evaporator, a transparent glass window was attached to the evaporator. Evaporators with 1-mm-thick sintered copper powder wicks (average diameter, 100 μm) were used. Temperature distribution and evaporator resistance were measured while increasing the input power in a series of 11 steps (20, 60, 100, 120, 140, 160, 180, 200, 220, 240, and 260 W) until the sintered wicks reached completely dried out. Temperature fluctuations and instabilities in the vapour and liquid lines were observed. Heat leakage from the evaporator and intermittent motion in the flow regime were significant factors in generating the implicit boiling instability. As the input power was increased, onset of pool boiling, nucleate boiling, as well as slug and bubbles were observed successively when the liquid level was above the surface of the wicks. When the net input power reached 236 W, the water film suddenly receded toward the wick surface. The process of the meniscus receding during the film evaporation, and the dynamics from the initial condition until dryout on the sintered copper wicks were observed and documented.
關鍵字Visualization; Two phase loop thermosyphon; Evaporator resistance; Sintered powder wick; Meniscus receding
語言英文(美國)
ISSN1880-5566
期刊性質
收錄於SCI
產學合作
通訊作者KANG, Shung-Wen
審稿制度
國別日本
公開徵稿
出版型式電子版
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