鰭片長度對熱傳性能之影響研究

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姓名

杜宗翰(Tsung-Han Tu) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

鰭片長度對熱傳性能之影響研究

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摘要(中)

本研究設計了用於光轉換模組連接器冷卻的平板?片，並對這些
熱交換器進行了性能測試。製造四種不同?片長度（L = 15、30、45、
60 mm），並進行風洞測試，以比較其熱傳性能和壓降。
實驗結果顯示，在不同風速下，當加熱功率從 5 W 增加到 20 W
時，各?片長度的加熱中心溫度均低於所需的 80℃。最佳的?片長度
取決於風速，介於 30 mm 和 45 mm 之間。當加熱功率增加到 30 W
時，在風速高於 2 m/s 的情況下，45 mm 長度的?片提供了最低的加

熱中心溫度。隨著空氣流速和?片長度的增加，空氣流過?片陣列的阻

力也增加。較長的?片提供了更大的熱傳遞面積，但也造成更高的流動
阻力。這導致對於固定風扇功率的?片-風扇組合而言，氣流速度較低，
從而降低整體熱傳遞性能。綜合這兩種效應，30 mm 至 45 mm 長的
?片在熱傳性能上優於較短或較長的?片。

摘要(英)

This study designed plane fin arrays for the cooling of optical module
connectors and provided a performance test of those heat exchangers. Four
fin lengths (L = 15, 30, 45, 60 mm) were fabricated for wind tunnel testing
and their heat transfer and pressure drop performance was compared.
The test results show that the heating center temperature of each fin
length is lower than the required 80 oC under different air velocities for
heating rate from 5 W to 20 W. The optimal fin length varies depending on
the wind speed, which is between 30 mm and 45 mm. While the heating rate
is increased to 30 W, the 45 mm length fins provided the lowest heating
center temperature at air velocities higher than 2 m/s. The resistance for air
flows through a fin array increased with increasing air velocity and length of
fins. Longer fins provide larger heat transfer area but also caused a higher
flow resistance. This resulted in a lower air flow velocity for a fixed fan
power fin array-fan assembly and degraded the overall heat transfer
performance. The combination of these two effects caused the 30 mm to 45
mm long fins provided better heat transfer performance than shorter or
longer fins.

關鍵字(中)

★ 平板鰭片、光轉換模組、氣冷
★ 平板鰭片
★ 光轉換模組
★ 氣

關鍵字(英)

★ plane fin, optical module connector, air cooling
★ plane fin
★ optical module connector
★ air cooling

論文目次

目錄
摘要 ................................................................................................................ i
Abstract ......................................................................................................... ii
目錄 .............................................................................................................. iii
表目錄 ........................................................................................................... v
圖目錄 .......................................................................................................... vi
符號說明 .................................................................................................... viii
第一章、前言 ............................................................................................... 1
1.1. 研究背景與動機 ................................................................... 1
1.2. 研究目的 ............................................................................... 7
第二章、文獻回顧 ....................................................................................... 8
2.1. 鰭片間距 ............................................................................... 8
2.2. 鰭片長度 ............................................................................. 10
2.3. 不同風扇之影響 ................................................................. 10
2.4. 結論 ..................................................................................... 12
第三章、研究方法 ..................................................................................... 13
3.1. 散熱鰭片的設計 ................................................................. 13
3.2. 實驗系統 ............................................................................. 14
3.2.1. 銅棒加熱系統 ......................................................... 14

iv

3.2.2. 風洞測試系統 ......................................................... 17
3.3. 實驗量測儀器與設備......................................................... 19
3.3.1. 溫度量測.................................................................. 19
3.3.2. 差壓量測.................................................................. 19
3.3.3. 風速量測.................................................................. 20
3.3.4. 資料擷取系統 ......................................................... 21
3.4. 實驗步驟 ............................................................................. 21
3.5. 數據換算 ............................................................................. 22
3.5.1. 加熱瓦數.................................................................. 22
第四章、實驗結果與討論 ......................................................................... 25
4.1. 固定風量 ............................................................................. 26
4.2. 固定壓降 ............................................................................. 27
第五章、結論 ............................................................................................. 40
參考文獻 ..................................................................................................... 41
附錄、實驗誤差分析 ................................................................................. 43

參考文獻

[1] 簡單說說光模組(https://vitomag.com/tech/rpzktt.html)。
[2] 帶大家認識一下400G 光模組-VITO 雜誌，
(https://vitomag.com/tech/ncveye.html)。
[3] Kays, W. M., and London, A. L., 1984, “Compact Heat Exchangers”,
Third Edition, McGraw-Hill, Inc.
[4] 黃兆雄，2013，低風速狀態下鰭片之熱傳性能增強研究，國立中央
大學機械工程研究所碩士論文，中壢。
[5] 林立揚，2018，不同性能風扇對熱傳增強鰭片之性能研究，國立中
央大學能源工程研究所碩士論文，中壢。
[6] Dong, J. Q., Chen, J. P., Chen, Z. J., Zhang, W. F., and Zhou, Y. M., 2006,
“Heat Transfer and Pressure Drop Correlations for the Multi-Louvered
Fin Compact Heat Exchangers,” Energy Conversion and Management,
Vol. 48, pp. 1506-1515.
[7] Liu, Y. C., Wongwises, S., Chang, W. J., and Wang, C. C., 2010, “Airside
Performance of Fin-and-Tube Heat Exchangers in Dehumidifying
Conditions–Data with Larger Diameter,” International Journal of Heat
and Mass Transfer, Vol. 53, pp. 1603–1608
[8] Yang, K. S., Chiang, C. M., Lin, Y. T., Chien, K. H., and Wang, C. C.,
2006, “On the Heat Transfer Characteristics of Heat Sinks: Influence of
Fin Spacing at Low Reynolds Number Region,” International Journal
of Heat and Mass Transfer, Vol. 50, pp. 2667-2674.
[9] Webb, R. L. and Trauger, P., 1991, "Flow Structure in the Louvered Fin
Heat Exchanger Geometry," Experimental Thermal and Fluid Science,
Vol. 4, pp. 205-217.
[10] Wang, C. C., Tao, W. H., and Chang, C. J., 1999, “An Investigation of
the Airside Performance of the Slit Fin-and-Tube Heat Exchangers,”
International Journal of Refrigeration, Vol. 22, pp. 595-603.

指導教授

楊建裕(Chien-Yuh Yang)

審核日期

2025-1-23

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