蒸發管

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

101109833

專利證號

I 458925

專利獲證名稱

蒸發管

專利所屬機關 (申請機關)

正修學校財團法人正修科技大學

獲證日期

2014/11/01

技術說明

有鑑於台灣目前對於不同直徑管段及長-徑比之組合型態之蒸發管排，既有的相關技術很少，相關專利部分多以單一管徑之大管徑、小管徑、微管徑…等之蒸發管為主，本次以實驗研究的方式與創新設計的概念去探討，由不同直徑管段所組成之小直徑蒸發管排內之流動沸騰熱傳與壓降特性，主要是由於考慮到兩相熱交換器之流體蒸發過程體積愈來愈大，若在蒸發過程漸漸增加管段直徑容納液態蒸發之蒸氣，必能減少壓降損失，又由於這種設計也會使散熱面積增大，因此整體之熱傳性能必能增強。本技術之熱傳增強管之熱傳性能均優於平滑管。 The experimental results show that the evaporation heat transfer coefficient were increased in the vapor quality, mass flux and heat flux In addition, the two - phase pressure drop of R134a increased as vapor quality and mass flux increased. The heat transfer coefficients for the present test tubes with different diameters are about 8.55~18.53% larger as compared with that for the smooth tube at the same conditions. The two-phase pressure drop for the present test tubes with different diameters are about 6.2 ~ 12.07% larger as compared with that for the smooth tube. It was also found that for the test tube 4 has the best heat transfer coefficient, followed by test tube 4, test tube 5, test tube 2, test tube 3 and test tube 1, respectively. Finally, the enhancement performance ratis, θa/s for the augmented tubes relative to the smooth tube are higher than 1 (about 1.01~1.10). It weans that the augmented tubes show the better overall performance than the smooth tube under study.

備註

連絡單位 (專責單位/部門名稱)

新創及技轉中心

連絡電話

(07)7358800#1197

網址