逆熱虹吸迴路之熱傳與壓降研究

Heat transfer and Pressure drop in a Reverse Thermosyphon Loop

林碩彥(Shuo-Yen Lin)

指導教授 ： 康尚文

淡江大學/工學院/機械與機電工程學系碩士班/碩士(2015年)

https://doi.org/10.6846/TKU.2015.01117

摘要

逆流熱虹吸迴路發展的目的，是為了解決目前工業用熱虹吸式熱管礙於流體受熱膨脹向上流動，被迫只能配合傳統虹吸傳熱模式開發或外加機械泵迴路解決只能大量向上熱傳的瓶頸。透過蒸汽壓與重力的特殊設計，可達成自主向下循環並大量傳熱的目的，有著不須外部供電，簡單的結構和限制單方向熱流的特點。
本實驗工作流體為酒精，充填率60%，輸入功率由10W至50W，、傾斜角度及改變向下傳熱管長度1850mm、350mm。實驗在改變蒸發端容積後，於輸入功率46W、充填率60%、向下傳熱管長度350mm時，藉由觀察T6的溫度上升，證明迴路開始作動，且蓄壓槽和熱交換器僅有10度的溫度差。

關鍵字

逆流熱虹吸迴路 ； 自主向下熱傳 ； 熱傳迴路 ； 壓力降

並列摘要

The conventional thermosyphon in a closed system, also referred as a “bottom-heat-type” thermosyphon, depends on the natural upward movement of vapor steam, hot fluid and the downward movement of cold liquids. Nevertheless, the reverse thermosyphon loop (RTL) could not only transfer heat from a heat source near the top to a heat sink at the bottom but also transfer heat from bottom to top as a conventional thermosyphon. The self-acting downward heat transfer devices are very useful for solar heating system, ground source heat pump (GSHP), and waste heat recovery.
The experiment is expected to explore the issue of different input power, tilt angle and change the downward heat transfer pipe diameters. Discussion the heat transfer and pressure drop of the reverse thermosyphon loop.

並列關鍵字

Reverse thermosyphon loop ； Autonomous downward heat transfer ； Heat transfer ； Pressure drop

參考文獻

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