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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 陳希立(Sih-Li Chen) | |
dc.contributor.author | Chi-Tun Chang | en |
dc.contributor.author | 張棋焞 | zh_TW |
dc.date.accessioned | 2021-06-15T11:35:58Z | - |
dc.date.available | 2021-08-30 | |
dc.date.copyright | 2016-08-30 | |
dc.date.issued | 2016 | |
dc.date.submitted | 2016-08-15 | |
dc.identifier.citation | [1] 王翰,空氣/筏基水熱交換器應用於外氣空調箱之研究,2015。
[2] 建築節能應用技術手冊,財團法人台灣綠色生產力基金會編印,2013。 [3] 江亦淳,地埋管空調系統性能分析,2015。 [4] D.A. Ball, R. D. Fischer, D. L. Hodgett. “Design methods for ground-source heat pumps”, ASHRAE Transactions, Vol. 89, pp. 416-440 [5] J.W. Mitchell, G.E. Myers, “An analytical model of the countercurrent heat exchange phenomena”, Biophysics Journal, 8(1968), 897-911. [6] S.P. Kavanaugh, “ Ground Source Heat Pump Design of Geothermal System for Commercial and Institutional Buildings”, ASHRAE, Atlanta, 1997. [7] Y. Gu, D.L. O’neal, “Development of an equivalent diameter expression for vertical U-tubes used in ground-coupled heat pumps”, ASHRAE Transactions, 104(1998), 347–355. [8] M.L. Allan, “Materials characterization of superplasticized cement–sand grout”, Cement and Concrete Research , 30(2000), 937-942. [9] Jalaluddin,A.Miyara,”Thermal performance investigation of several types of vertical ground heat exchangers with different operation mode,”Applied Thermal Engineering,Vol.33-34,pp.167-174,2012. [10] Ingersoll, L.R., et al. 1951. “Theory of earth heat exchangers for the heat pump,” ASHVE Transactions Vol.57,167-188,1951. [11] V Badescu, Simple and accurate model for the ground heat exchanger of a passive house, Renewable Energy, 32 (2007), pp. 845–855. [12] M. Cucumo, S. Cucumo, L. Montoro, A. Vulcano, A one-dimensional transient analytical model for earth-to-air heat exchangers, taking into account condensation phenomena and thermal perturbation from the upper free surface as well as around the buried pipes, International Journal of Heat and Mass Transfer, 51 (2008), pp. 506–516. [13] M. Congedo, G.Colangelo, G.Starace, “CFD simulations of horizontal ground heat exchangers: A comparison among different configuration”, Applied Thermal Engineering , 33-34(2012), 24-32. [14] V. Bansal, R. Misra, G. Das Agrawal, J. Mathur, “Performance analysis of earth–pipe–air heat exchanger for winter heating”, Energy and Buildings, 41 (2009), pp.1151–1154. [15] V. Bansal, R. Misra, G. Das Agrawal, J. Mathur, “Performance analysis of earth–pipe–air heat exchanger for summer cooling”, Energy and Buildings, 42 (2010), pp. 645–648. [16] L. Ozgener, “A review on the experimental and analytical analysis of earth to air heat exchanger (EAHE) systems in Turkey”, Renew Sustain Energy, Rev (2011). [17] 2011空氣節能手冊。 [18] Threlkeld, J.L.,1970, “Thermal Environmental Engineer.” New-York Prentice-Hall,Inc. [19] ASHRAE Systems and Equipment Handbook (SI), 2000, Chapter 21. [20] Xia L, Chan MY, Deng SM, Xu XG. A modified logarithmic mean enthalpy difference (LMED) method for evaluating the total heat transfer rate of a wet cooling coil under both unit and non-unit Lewis Factors. Int J Thermal Sci 2009;48:2159–64. [21] Mirth DR, Ramadhyani S. Prediction of cooling-coil performance under condensing conditions. International Journal of Heat and Fluid Flow 1993;14(4):391–400. [22] Mirth DR, Ramadhyani S. Comparison of methods of modeling the air side heat and mass transfer in chilledwater cooling coils. ASHRAE Transactions 1993;99(2): 285–99. [23] M. Khamis Mansour and M. Hassab (2012). Thermal Design of Cooling and Dehumidifying Coils, Heat Exchangers - Basics Design Applications, Dr. Jovan Mitrovic (Ed.). [24] Liang Xia, M.Y. Chan, S.M. Deng, X.G. Xu. Analytical solutions for evaluating the thermal performances of wet air cooling coils under both unit and non-unit Lewis Factors. Energy Conversion and Management 2010; 51: 2079–2086. [25] T.K. Hong, R.L. Webb. Calculation of fin efficiency for wet and dry fins. International Journal of HVAC&R Research 2 (1996) 27–41. [26] Arafat A. Bhuiyan, A.K.M. Sadrul Islam. Thermal and hydraulic performance of finned-tube heat exchangers under different flow ranges: A review on modeling and experiment. International Journal of Heat and Mass Transfer 2016; 101: 38–59. [27] Jianfeng Wang, Eiji Hihara. Prediction of air coil performance under partially wet and totally wet cooling conditions using equivalent dry-bulb temperature method. International Journal of Refrigeration 2003; 26: 293–301. [28] https://www.youtube.com/watch?v=n6jVybMrfoc [29] Yunus A. Cengel, Afshin J. Ghajar, Heat and Mass transfer: Fundamentals & Applications, 4th Ed. [30] M. Cucumo, V. Ferraro, A. Vulcano, Un modello analitico monodimensionale per il dimensionamento degli scambiatori di calore interrati ad aria, in: XXIV Congresso Nazionale UIT sulla Trasmissione del Calore, Napoli, 2006. [31] ASHRAE Handbook: Fundamentals, Ch. 6: Psychrometrics, Atlanta, GA; 2001. [32] 王賢斌,地源熱泵系統性能分析與最佳化設計,2015。 [33] 林承漢,筏基水溫能理論與實驗研究,2016。 [34] http://www.cwb.gov.tw/V7/ [35] Wilbert F. Stoecker, Jernold W. Jones. 冷凍與空調,第二版。1995。蘇金佳譯。 [36] 孫天明,調濕材料應用於水泥質複合材料之探討。國立台灣海洋大學河海工程學系碩士論文,中華民國。2009。 [37] 江宜瑾,傾斜式循環流體化床應用於吸附除濕系統,2015。 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/49582 | - |
dc.description.abstract | 台灣地區夏季高溫高濕,空調的需求量極大,除了電費高昂外,對環境也造成很大的負擔,本研究參考前人利用建築筏基內的消防筏基水作為淺層溫能應用於外氣空調箱的研究,推導出合適的數學模型、實際操作模式取得各模式的冷卻能力並將兩者互相比對以證實數學模型的合理性。為了推廣筏基水淺層溫能的設計,本研究亦根據實驗所得知數據計算出筏基水淺層溫能的經濟效益以及回收期限,並試著推導出各種最佳的操作條件使筏基水淺層溫能的效益能最大化。
本研究分別利用三種不同形式的能源進行空調箱預冷能力的探討,包括新型的地埋管熱交換器:空氣/筏基水熱交換器、直接抽取筏基水至盤管中進行冷卻、以及結合外部製冷機(本文以熱泵為例)對系統進行預冷,並整合成五種不同模式。以宜蘭自用住宅為案例,實際操作的結果均能有效地讓空氣降溫至27℃左右,且根據實驗數據計算的結果,使用筏基水淺層溫能預冷每個月最多可以節省2150TWD,並能在23 個月後達到回收年限。而將數學模型計算的結果與4、5、6月的實際實驗數據比對,不論是乾球溫度或是濕度比誤差約在5%左右,最大誤差均在9%以下。為了能更有效地利用筏基水淺層溫能,本研究計算出空氣/筏基水熱交換器及盤管的有效性,並發現在同樣使用筏基水作為熱交換對象的情況下,空氣/筏基水熱交換器具有較佳的有效性,而若以盤管搭配熱泵進行外器預冷,則冰 水入口溫度需維持在15℃以上,才能使盤管的有效性維持在0.7。藉由將宜蘭2015年4~10 月的外氣條件代入數學模型計算,可得知單純使用空氣/筏基水熱交換器的模式最能省電。 藉由案例分析可得知,筏基水淺層溫能雖然能降低室內空調的負荷,但若筏基僅建置於地下一樓的話,仍然受外氣溫度影響很大。為了使筏基水淺層溫能的冷卻能力增加,本研究另外設計一系統,將離地表更深處的22℃地下水以太陽能馬達抽出並和筏基水對流。此系統尚在設置中,目前僅完成對筏基6槽的水對流做完測試,結果確實能使筏基水溫下降約2℃。 | zh_TW |
dc.description.abstract | The weather in summer Taiwan is not only hot but also very wet. Hence the requirement for air conditioning is also very high. This not only lead to high electricity cost but also a huge burden to environment. This research is based on the utilization of the raft foundation water of the buildings as shallow geothermal energy applied to outside air conditioning systems. Also we derive adequate mathematic models and compare it with experimental data to prove the validity of the mathematic model in the research. In order to popularize the design of raft foundation water used as shallow geothermal energy, this research calculated the economic benefit and the payback period of raft foundation water thermal energy systems and tried to derive optimize condition to maximize the efficiency, too.
There are three different types of energy usage to pre-cool the air, including a new type of ground heat exchanger: air/raft foundation water heat exchanger, drawing water directly from the raft foundation to cooling coil for pre-cooling, and a combination of pre-cooling heat pump systems. Then we integrate the system into five different modes. Take the occupied dwelling in Eland as example, the system can reduce the air temperature efficiently to about 27℃. Besides, according to the calculation of the experimental data, it can save as high as 2150 TWD per month and reach the payback period only in 23 months, which is relatively short compared with the life of the building. As we compare the data calculated by the mathematic models with the experimental data, it is clearly seen that both dry bulb temperature and the humidity ratio have an average error at about 5%, with the maximum error not exceeding 9%. To utilize raft foundation water thermal energy even more efficiently, this research also calculate the effectiveness of air/raft foundation water heat exchanger and cooling coil and discover that when using raft foundation water for heat exchange, air/raft foundation water heat exchanger has better effectiveness and that we need to keep the temperature of inlet cooling water of the coil at above 15℃ to maintain the effectiveness of the cooling coil higher than 0.7 as combined with the pre-cooling heat pump systems. By substituting the outside air condition of Eland in 2015 from April to October into the mathematical model, we discover that the most energy saving mode of the systems is by simply using air/raft foundation water heat exchanger. By the study of the case, it is clear that the raft foundation water thermal energy can reduce the cooling capacity. But the water temperature may still get influenced by the outside air condition hardly if the raft foundation is built only a floor underground. To improve the cooling capacity of the raft foundation water thermal energy, the research provides another system to draw the deeper 22℃ underground water by a solar energy pump into the raft foundation. This system is still constructing now. We only complete the testing of pumping the underground water into tank 6. The result shows that it can truly reduce the temperature by about 2℃. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T11:35:58Z (GMT). No. of bitstreams: 1 ntu-105-R03522315-1.pdf: 5236199 bytes, checksum: 7053ebc066385ab82ccda618bc5e2268 (MD5) Previous issue date: 2016 | en |
dc.description.tableofcontents | 致謝 I
中文摘要 II Abstract IV 目錄 VI 圖目錄 XI 表目錄 XIV 符號說明 XVII 第一章、緒論 1 1.1前言 1 1.2文獻回顧 2 1.2.1淺層溫能 3 1.2.2外氣空調箱 9 1.3研究動機與目的 11 第二章、基礎理論 14 2.1 空氣/筏基水熱交換器 14 2.1.1一般狀況 15 2.1.2無凝結現象 18 2.1.3對流系數計算 18 2.2 空調箱盤管 19 2.2.1濕盤管 19 2.2.2乾盤管 23 2.2.3對流係數以及總體鰭片效率計算 25 第三章、實驗設備、模式介紹及實驗方法 28 3.1實驗設備 28 3.1.1筏式基礎 28 3.1.2空氣/筏基水熱交換器 29 3.1.3外氣空調箱 30 3.1.4外氣風機 32 3.1.5熱泵、集水桶 32 3.1.6馬達 34 3.1.7 PLC控制盤 34 3.1.8量測儀器及其量測方式 35 3.1.8.1熱電偶 35 3.1.8.2垂直式流量計 38 3.1.8.3風速計 39 3.1.8.4電力分析儀 41 3.2控制元件及模式介紹 41 3.2.1控制元件 41 3.2.2運轉模式說明 44 3.2.2.1模式一:空氣/筏基水熱交換器預冷(熱)模式 44 3.2.2.3模式三、結合外部製熱(冷)機(以熱泵系統微例)預冷(熱) 46 3.2.2.4模式四、空氣/筏基水熱交換器及抽取筏基水預冷(熱) 47 3.2.2.5模式五:空氣/筏基水熱交換器結合熱泵系統預冷(熱) 48 3.2.2.6模式六:直接引入外氣(By pass)供住戶使用 49 3.3實驗方法 50 第四章、結果與討論 53 4.1實驗結果 53 4.1.1風量量測 53 A. 經過空氣/筏基水熱交換器之風量 54 B. 未經過空氣/筏基水熱交換器之風量 54 4.1.2模式一:空氣/筏基水熱交換器預冷模式 55 A. 實驗日期2016/5/26 55 B. 實驗日期2016/5/31 57 4.1.3模式二:取筏基水預冷 59 A. 實驗日期2016/5/26 59 B.實驗日期2016/5/31 61 4.1.4模式三:結合雙效熱泵系統之預冷 62 A.實驗日期2016/4/16 63 B. 實驗日期2016/4/21 64 4.1.5模式四:空氣/筏基水熱交換器及抽取筏基水預冷 65 A. 實驗日期2016/6/21 65 4.1.6模式五:空氣/筏基水熱交換器結合熱泵系統預冷 67 A. 實驗日期2016/6/28 67 B. 實驗日期2016/7/27 69 4.2節能效益分析 71 4.2.1節能效益 72 4.2.1.1模式一:筏基水-地埋管預冷模式 72 4.2.1.2模式二:取筏基水預冷 73 4.2.1.3模式三:結合雙效熱泵系統之預冷 75 A. 4/16使用筏基水作為淺層溫能之熱泵模式 75 B. 4/21使用地下水作為淺層溫能之熱泵模式 76 4.2.1.4模式四:空氣/筏基水熱交換器及抽取筏基水預冷 77 4.2.1.5模式五:空氣/筏基水熱交換器結合熱泵系統預冷 79 A. 6/28使用地下水作為淺層溫能之熱泵模式 79 B. 7/27使用筏基水作為淺層溫能之熱泵模式 80 4.2.2回收年限 82 4.2.2.1模式一:空氣/筏基水熱交換器預冷模式之回收年限 83 4.2.2.2模式二:取筏基水預冷之回收年限 83 4.2.2.3模式三:結合雙效熱泵系統之預冷之回收年限 84 4.2.2.4模式四:空氣/筏基水熱交換器及抽取筏基水預冷之回收年限 84 4.2.2.5模式五:空氣/筏基水熱交換器結合熱泵系統預冷之回收年限 84 4.3模擬結果及誤差分析 85 4.3.1模式一之模擬結果與實驗數據比對 87 A. 實驗日期2016/5/26 87 B. 實驗日期2016/5/31 88 4.3.2模式二之模擬結果與實驗數據比對 89 A. 實驗日期2016/5/26 89 B. 實驗日期2016/5/31 90 4.3.3模式三之模擬結果與實驗數據比對 90 A. 實驗日期2016/4/16 90 B. 實驗日期2016/4/21 91 4.3.4模式四之模擬結果與實驗數據比對 92 A. 實驗日期2016/6/21 92 4.3.5模式五之模擬結果與實驗數據比對 93 A. 實驗日期2016/6/28 93 B. 實驗日期2016/7/27 94 4.3.6誤差分析 95 4.4熱交換器之有效性 98 4.4.1模式一:空氣/筏基水熱交換器預冷模式的有效性 99 4.4.2模式二:取筏基水預冷的有效性 99 4.4.3模式三:結合雙效熱泵系統之預冷的有效性 100 4.4.4模式四:空氣/筏基水熱交換器及抽取筏基水預冷的有效性 100 4.4.5模式五:空氣/筏基水熱交換器結合熱泵系統預冷的有效性 101 4.4.5熱交換器有效性結論 102 4.5模式間的最佳化 102 4.6筏基水與地下水循環 109 4.6.1實驗日期2016/6/21 109 4.6.2實驗日期2016/6/27 111 第五章、結論與建議 114 5.1結論 114 5.2建議 115 參考文獻 117 | |
dc.language.iso | zh-TW | |
dc.title | 筏基水溫能應用於外氣空調系統之節能研究 | zh_TW |
dc.title | Energy Conservation of Raft Foundation Water Thermal Energy Applied to Outside Air Conditioning Systems | en |
dc.type | Thesis | |
dc.date.schoolyear | 104-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 李文興,王榮昌,江沅晉 | |
dc.subject.keyword | 淺層溫能,空氣/筏基水熱交換器,外氣空調箱,預冷, | zh_TW |
dc.subject.keyword | shallow geothermal energy,air/raft foundation water heat exchanger,air handling units,pre-cooling, | en |
dc.relation.page | 120 | |
dc.identifier.doi | 10.6342/NTU201602743 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2016-08-16 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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