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研究生:黃鴻棠
研究生(外文):Huang,Hung-Tang
論文名稱:板式與殼管式熱交換器之實驗研究
論文名稱(外文):Experimental studies on plate and shell-and-tube heat exchangers
指導教授:葉榮華(Rong-Hua Yeh)
指導教授(外文):Yeh,Rong-Hua
口試委員:黃正弘楊敏雄陳寒壽葉榮華
口試委員(外文):HUANG,ZHENG-HONGYANG,MIN-XIONGCHEN,HAN-SHOUYEH,JUNG-HUA
口試日期:2014-07-14
學位類別:碩士
校院名稱:國立高雄海洋科技大學
系所名稱:輪機工程研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:中文
論文頁數:76
中文關鍵詞:熱傳特性
外文關鍵詞:heat transfer characteristic
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本研究旨在探討熱交換器之熱傳特性,實驗上建立一套量測系統,具有冷、熱恆溫槽,經由循環泵引流經過板式或殼管式熱交換器,藉由溫度量測並計算出總熱傳係數。針對實驗所使用之殼管式熱交換器之尺寸及結構,以現有之理論模式計算,並與實驗結果相對照,初步結果顯示,U 值隨流率之增加而變大,尤其是在小流率區域更為顯著。
根據實驗中的觀察,在實驗過程中可以得知板式熱交換器地實驗與理論之U 值均隨流率增加,在低流率區域其斜率比較大,而當流量變大之後,斜率減小而漸進水平,整體數據與理論模式結果相當,最大誤差在15%內。而在殼管式熱交換器實驗中,在殼側與管側皆為低流率的時候,所得到總熱傳係數與利用Kern Method 之計算結果較接近,隨著流率慢慢增加,當在高流率的時候,其實驗數據與理論模擬所得到的總熱傳係數非常接近,在平均後所得到數據較高。最後,由實驗數據所得到總熱傳係數可知:板式熱交換器的總體熱傳係數高於殼管式熱交換器。

The objective of the present study focuses on the heat transfercharacteristics on heat exchanger. The experi-mental setup equipped withcold/hot thermostat is built. Flow driven by circulating pump leads toplate or shell/tube heat exchanger and the recorded temperature isprocessed to obtain the overall heat transfer coefficients. Based on thegiven dimension and structure of heat exchanger and the results calculatedby available theoretical model, the primary outcome in comparing withmeasurement shows that the U-value increases with the increasing flowrate and it is remarkable especially for low flow rate zone.
For plate heat exchanger, both of the measured and calculatedU-values increase with increasing flow rate. U-value slope in low flowrate is large and goes gently in high flow rate. Experiment trends aregenerally agreement with the theoretic model and the largest error isconfined within 15%. As for shell/tube one, the measured overall heattransfer coefficient of shell or tube side in low flow rate approaches toquantity near the one obtained from Kern method. In high flow rate,however, the overall heat transfer coefficients obtained from experimentsare close to that of simulations and averaged coefficient seems to reachlarger. Accordingly, it is a fact obtained from the exper-iment that theoverall heat transfer coefficient of plate heat exchanger is higher than thatof shell/tube one.

目 錄
中文摘要................................................ I
ABSTRACT................................................II
誌 謝..................................................III
目 錄..................................................IV
圖目錄...................................................VI
表目錄...................................................VIII
符號說明.................................................IX
第一章 緒論...............................................1
1.1 前言..................................................1
1.2 研究目的...............................................2
1-3文獻回顧................................................5
1-4論文架構................................................10
第二章 板式與殼管式熱交換器基本理論推導.......................11
2-1熱交換器的分類...........................................11
2-2板式熱交換器構造及理論....................................13
2-2-1板式熱交換器內部流場安排................................20
2-2-2板片幾何形狀樣式.......................................21
2-3管殼式熱交換器基本理論推導................................25
2-3-1殼管式熱交換器總熱傳系數計算............................28
2-4熱交換器之數學模式.......................................31
第三章 實驗量測系統.........................................36
3-1實驗設備系統介紹.........................................36
3-2實驗操作方法.............................................38
3-2-1板式熱交換器...........................................38
3-2-2殼管式熱交換器.........................................39
3-2-3操作過程應注意事項......................................39
3-2-4操作流程...............................................40
第四章 實驗結與討論..........................................43
4-1實驗數據.................................................43
4-2-1實驗數據...............................................45
4-2-2殼管式熱交換器..........................................48
4-3實驗結果與討論............................................51
4-3-1板式熱交換器之同、反向流.................................51
4-3-2殼管式熱交換器之CaseⅠ、CaseⅡ.............................51
4-2-3殼管式熱交換器與板式熱交換器..............................54
第五章 結 論.................................................55
參考文獻......................................................57






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