博碩士論文 983203049 詳細資訊




以作者查詢圖書館館藏 以作者查詢臺灣博碩士 以作者查詢全國書目 勘誤回報 、線上人數:41 、訪客IP:18.216.42.225
姓名 徐偉展(Wei-zhan Xu)  查詢紙本館藏   畢業系所 機械工程學系
論文名稱 不同空調運作方式對於公共空間熱舒適度之數值模擬分析
(The Numerical Analysis of Thermal Comfort in Public Space by Different Operational Modes of Air Conditioners)
相關論文
★ 迴轉式壓縮機泵浦吐出口閥片厚度對性能影響之研究★ 鬆弛時間與動態接觸角對旋塗不穩定的影響
★ 電化學製作針錐微電極之製程研究與分析★ 蚶線形滑轉板轉子引擎設計與實作
★ 利用視流法分析金屬射出成形脫脂製程中滲透度與毛細壓力之關係★ 應用離心法實驗探求多孔介質飽和度與毛細力之關係
★ 利用網絡模型數值模擬粉末射出成形製程毛細吸附脫脂機制★ 轉注成形充填過程之巨微觀流數值模擬
★ 二維熱流效應對電化學加工反求工具形狀之分析★ 金屬粉末射出成形製程中胚體毛細吸附脫脂之數值模擬與實驗分析
★ 飽和度對金屬射出成形製程中毛細吸附脫脂之影響★ 轉注成型充填過程巨微觀流交界面之數值模擬
★ 轉注成型充填過程中邊界效應之數值模擬★ 鈦合金整流板電化學加工技術研發
★ 射出/壓縮轉注成型充填階段中流場特性之分析★ 脈衝電化學加工過程中氣泡觀測與分析
檔案 [Endnote RIS 格式]    [Bibtex 格式]    [相關文章]   [文章引用]   [完整記錄]   [館藏目錄]   [檢視]  [下載]
  1. 本電子論文使用權限為同意立即開放。
  2. 已達開放權限電子全文僅授權使用者為學術研究之目的,進行個人非營利性質之檢索、閱讀、列印。
  3. 請遵守中華民國著作權法之相關規定,切勿任意重製、散佈、改作、轉貼、播送,以免觸法。

摘要(中) 一般室內空調啟動後,即依據空調配置方式,對整個空間進行降溫,若考量空間人數與活動範圍,改變空調的運作模式,即可減省空調所需能源。本研究將利用計算流體力學的(CFD)方法,探討不同的空調運作方式如:十二進風口、單一進風口、雙進風口、調整進風口角度,在不同流速與溫度下,對於熱舒適度的影響。其中要使小區域空間達到熱舒適度,以單一出風口表現較佳。這是因為進風口彼此間的距離或總數增加,使室內流場中的渦流變多,因此提高冷熱空氣的混合,造成目標區域熱舒適度變差。此外在流速與溫度參數對於熱舒適度的影響,在溫度較低時,以調整流速影響較大;而進風口較高溫時,以調整溫度較大。另外以進風口與回風的流速、溫度進行空調能源使用評估,單一進風口最為節能,而若要維持相同的熱舒適度,在流場的初期空調以低溫、低流速較為節能;流場後期則提高溫度、流速較為節能。
摘要(英) The cooling of space depends on the configuration of the air conditioners. Considering the numbers of people and their activities, we can change the mode of operation to reduce the energy consumption. In this study, the computational fluid dynamics (CFD) methods are used to analyze the differences of thermal comfort among operation modes, for examples: twelve inlets, single inlet, dual inlets and the angle of inlet at different velocities and temperature . The results show that single inlet system yiedlds better thermal comfort. This is because that the decreasing of distance between the air inlets or the increasing of number of air inlet generate lots of turbulence in the flow field which mix hot and cold air, and therefore cause the deterioration of thermal comfort. When the inlet temperature is low, flow velocity has more effect cmpared to other parameters. As the inlet temperature is relatively high, changing inlet temperature affect the thermal comfort mostly. The assessment of energy efficiency based on the temperature and velocity in inlet and outlet has been studied. At shows that the single inlet is the most efficient. If we want to maintain the same thermal comfort level but reduce the energy comsuption, the best way is to feed air with low temperature and low velocity in the beginning, and feed air with a higher temperature and velocity after the temperature reaching a certain value.
關鍵字(中) ★ 熱舒適
★ CFD
★ 空調
關鍵字(英) ★ CFD
★ Air Conditioner
★ Thermal Comfort
論文目次 中文摘要 I
英文摘要 II
誌謝 IV
目錄 V
表目錄 VIII
圖目錄 IX
第一章 緒論 1
1-1 前言 1
1-2 文獻回顧 2
1-2-1 空調方式 2
1-2-2 熱舒適度指標 4
1-2-3 汙染物濃度指標與換氣指標 8
1-2-4 室內流動數值模擬文獻 8
1-2-5 PMV熱舒適度指標 11
1-3 研究目的 16
第二章 理論模式 17
2-1 物理模型與基本假設 17
2-2 統御方程式 18
2-2-1 質量守恒方程式 18
2-2-2 動量守恒方程式 18
2-2-3 能量守恆方程式 19
2-2-4 傳輸方程式 19
2-3 紊流模型: Standard k-ε Mode 20
2-3-1 標準壁面函數(Standard wall function) 21
第三章 數值方法 22
3-1 Gambit模組 22
3-2 Fluent模組 22
3-3 方程式離散方法 23
3-4 疊代求解與受斂條件 25
3-5 邊界條件、起始條件 25
第四章 結果與討論 27
4-1 模型驗證 27
4-1-1 網格密度測試 28
4-1-2 時間間距測試 28
4-1-3 暫態與穩態的吻合性 29
4-2 十二進風口 30
4-3 單一進風口 32
4-4 雙進風口 35
4-5 調整進風口角度 36
第五章 結論與未來展望 37
5-1 結論 37
5-2 未來展望 38
參考文獻 39
參考文獻 1.許守平,冷凍空調原理與工程,全華出版社,臺北,民國八四年
2.袁秀玲,現代制冷空調理論應用與新技術,西安交通大學,西安,(2009)
3.李先庭,趙彬,室內空氣流動數值模擬,機械工業出版社,北京,(2009)
4.邱建宏,“不同空調通風條件對於室內空間流場之CFD模擬”,國立中央大學土木工程學系碩士論文,(2010)
5.葉歆,建築熱環境,淑馨出版社,臺北,民國八六年
6.F. C. Houghten, C. P. Yaglou , “Determination of the Comfort Zone”, ASHRAE Research Report No.673, ASHRAE Transations 44, pp.361, (1923)
7.H.S. Belding, T.F. Hatch, “Index for evaluating heat stress in terms of resulting physiological strains, Heat Piping Air Condition, 27 ,129-136,(1955)
8.行政院勞工委員會勞工安全衛生研究所,高溫作業勞工熱暴露劑量之調查研究,行政院勞工委員會勞工安全衛生研究所,民國八三年
9.ISO, “Ergonomics of the thermal environment-Analytical determination and interpretation of thermal comfort using calculation of PMV and PPD indices and local thermal comfort criteria”,ISO 7730,(2005)
10.B.W. Olesen, “Introduction to thermal comfort standards to the proposed new version of EN ISO 7730”, Journal of Building and Environment ,Vol. 34. pp.537-548,(2002)
11.ASHRAE , “Thermal environmental conditions for human occupancy”, ASHRAE Standard 55, (2004).
12.G.M. Master 著,葉欣誠 譯,環境工程與科學概論,五南出版社,台北市,民國九十一年
13.P.V. Nielsen, “English translation:Flow in air condition room”,Ph.D. thesis ,Technical University of Demark,(1976)
14.P.V. Nielsen, A. Restivo, J.H. Whitelaw, “The velocity characteristics of ventilated room”, Journal of Fluids Engineering, Vol.100, pp.291-298, (1978)`
15P.V. Nielsen, A. Restivo, J.H. Whitelaw, “Buoyancy affected flows in ventilated room”, Journal of Heat and Mass Transfer, Vol. 2, pp.115-127,(1979)
16.S. Murakami, S. Kato, “Numerical and experimental study on room airflow-3D predictions using the k-ε turbulence model”, Journal of Building and Environment ,Vol. 24, pp.85-97,(1989)
17.S. Murakami, S. Kato, H. Nakagawa, “Numerical prediction of horizontal nonisothermal 3-D jet in room based on the k-ε model”, ASHRAE Transactions Vol.97, Pt.1, (1991)
18.Q. Chen, “Prediction of room air motion by Reynods-stress models”, Journal of Building and Environment ,Vol. 31,pp.233-244,(1996)
19.R.Cheesewright, K.J. King, S. Ziai, “Experimental data for the validation of computer codes for the prediction of two-dimensional buoyant cavity flow. In significant questions in buoyancy affected enclosure or cavity flow”, Journal of ASME, pp.75-81,(1986)
20.A. Restivo, “Turbulent flow in ventilated room, University of London”, Ph.D. thesis, (1979)
21.D. Cooper, D.C. Jackson, B.E. Launder, G.X. Liao, “Impinging jet studies for turbulence model assessment-I. Flow-field experiments”, International Journal of Heat and Mass Transfer, Vol. 36, pp.2675-2684, (1993)
22.R.M. Susin, G.A. Lindner, V.C. Mariani, K.C. Mendonca, “Evaluating the influence of the width of inlet slot on the prediction of indoor airflow : Comparison with experimental data”, Journal of Building and Environment , Vol. 44, pp.971-986,(2009)
23.S. Murakami, S. Kato, T. Kim, “Indoor climate design based on CFD coupled simulation of convection, radiation, and HAVC control attaining a given PMV value”, Journal of Building and Environment , Vol. 36, pp.701-709,(2001)
24.L. Zhou, F. Haghighat, “Optimization of ventilation systems in office environment,Part II:Results and discussions”, Journal of Building and Environment ,Vol.44, pp.657-665,(2009)
25.B.W Olesen, “Thermal comfort” , Bruel and Kjaer, Technical review, No.2,pp.1-43,(1982)
26.Fluent User’s Guide , Release 6.3,(2006)
27.李人憲,有限體積法基礎,國防工業出版社,北京,(2005)
28.王瑞金,張凱,王剛,Fluent技術基礎與應用實例—CAD/CAM/CAE實用技術,清華大學出版社,北京,(2007)。
指導教授 洪勵吾(Lih-Wu Hourng) 審核日期 2011-7-22
推文 facebook   plurk   twitter   funp   google   live   udn   HD   myshare   reddit   netvibes   friend   youpush   delicious   baidu   
網路書籤 Google bookmarks   del.icio.us   hemidemi   myshare   

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  - 隱私權政策聲明