博碩士論文 91323058 詳細資訊


姓名 施廷潤(Ting-Ruen Shih)  查詢紙本館藏   畢業系所 機械工程學系
論文名稱 高溫蓄熱器理論模擬
(Theoretical Simulation in High Temperature Storage Heater)
檔案 [Endnote RIS 格式]    [Bibtex 格式]    至系統瀏覽論文 ( 永不開放)
摘要(中) 高溫蓄熱器為高溫高速風洞設備一部份,實際試驗所需人力和花費不低,故有必要建立模擬能力,以降低吹試失敗的風險與成本。本文即建構一模擬工具,模擬前先輸入進氣閥開度變化,即可模擬在實際吹試過程中主要參數變化情況。經本模擬可知實際吹試過程中,蓄熱器內部壓力、壓力差、高壓儲氣槽壓力、蓄熱床出口之氣流溫度和蓄熱床溫度分佈,最後將模擬結果和前人實際吹試數據互相比對。在蓄熱器壓力模擬方面,模擬過程最大誤差約5 %。蓄熱床上下游壓力差模擬方面,穩態階段誤差不大,但在非穩態之建壓階段模擬結果不理想,準確度有待提升。高壓儲氣槽各模擬吹試結果和實際吹試結果比對,最大誤差約5 %,準確度佳。蓄熱床出口氣流溫度方面,模擬結果和實驗數據比對結果整體趨勢相同,比實際吹試溫度高20度,誤差不大。蓄熱床溫度分佈方面整體趨勢合理,但無相關實際試驗數據可供比對,模擬結果可作下一次蓄熱磚蓄熱之參考。本文建構之模擬工具除蓄熱床上下游壓力差模擬準確度不佳外,其他模擬結果和實際吹試之誤差不大。
摘要(英) High temperature storage air heater is a component of high temperature and high speed wind tunnel. It cost a lot and many people work on the wind tunnel tests. If we make the ability of simulation about wind tunnel tests, the cost will decrease. This research is to structure a simulation tool. Input the flow control valve opening data before simulating, and then to obtain the change of main parameter by simulating. By means of this simulation tool we could get information about SAH pressure、SAH pressure difference、air reservoir pressure、outlet air temperature and temperature distribution of cored brick. These simulating data are compared with experimental data to prove the accuracy. The maximum error of SAH pressure simulation is five percent. In pressure difference simulation, the accuracy in steady state is well. In the result of air reservoir simulations, the maximum error is about five percent. In air temperature, the simulation data matches the experimental one. The air temperature in simulating is higher than experimental one. The temperature distribution of the cored brick bed is reasonable, but, there is no related experimental data can be compared with. The result of the simulation could be a reference of the next heating. After compared with experimental data, the simulation data fits the experimental one except
the pressure difference simulation.
關鍵字(中) ★ 風洞
★ 高溫蓄熱器
關鍵字(英) ★ wind tunnel
★ storage heater
論文目次 目 錄
頁次
摘要……………………………………………………………………I
英文摘要………………………………………………………………II
目錄……………………………………………………………………III
圖目錄…………………………………………………………………V
符號…………………………………………………………………VIII
第一章 緒論 …………………………………………………………1
1-1 前言……………………………………………………1
1-2 文獻回顧………………………………………………2
1-3 研究動機………………………………………………5
第二章 設備簡介 ……………………………………………………6
第三章 吹試過程理論分析 …………………………………………9
3-1 模擬方法.....................................9
3-1-1蓄熱器進口流率………………………………………10
3-1-2 高壓儲氣槽壓力 ……………………………………12
3-1-3蓄熱器出口流率……………………………………14
3-1-4 蓄熱器壓力……………………………………………16
3-1-5蓄熱磚壓力差…………………………………………17
3-1-6蓄熱器出口溫度和蓄熱磚溫度……………………17
第四章 模擬結果與討論 ……………………………………………20
第五章 結論 …………………………………………………………27
參考文獻………………………………………………………………28
附圖……………………………………………………………………29
參考文獻 1. RJTF construction group, RAMJET Engine Test Facility, NAL TR-1347, pp. 67-81, 1998.
2. J. P. Holman, Heat Transfer, pp. 296, McGraw Hill Book Company, New York , 1981.
3. J. P. Holman, Heat Transfer, pp. 299, McGraw Hill Book Company, New York , 1981.
4. J. P. Holman, Heat Transfer, pp. 300, McGraw Hill Book Company, New York , 1981.
5. J. P. Holman, Heat Transfer, pp. 301, McGraw Hill Book Company, New York , 1981.
6.呂淑如, 水及空氣在小管內之壓降實驗分析, 碩士論文, 國立中央大學機械工程 系, 1999.
指導教授 周復初(Fu-Chu Chou) 審核日期 2004-7-13
推文 facebook   plurk   twitter   funp   google   live   udn   HD   myshare   reddit   netvibes   friend   youpush   delicious   baidu   

若有論文相關問題,請聯絡國立中央大學圖書館推廣服務組 TEL:(03)422-7151轉57407,或E-mail聯絡