臺灣博碩士論文加值系統

相變材料(Phase Change Material)在產生相變化時會伴隨著大量熱能的吸收和釋放，俗稱潛熱(Latent heat)，可利用此性質來達到恆溫或降低溫度振幅之效果，因此相變材料廣泛被利用在建築物上。
相變材料於建築物上之應用多在於西方國家，由於秋冬時刻夜間氣候過低，暖氣耗電量過大，因此利用相變材料之潛熱於白天時吸收大量熱量，並於夜晚時刻釋放熱量，達到加熱空氣之效果。但臺灣處於亞熱帶氣候區，所面臨的問題是夏季過熱造成大量的空調耗電，因此我們在應用上是與西方國家相反的。
本論文主要探討相變材料應用於台灣氣候下建築物之節能效果，利用商業有限元素軟體ANSYS建立適當邊界條件之模型。首先探討相變材料於通風單元中的運作情形，分為單一相變材料與多種類複合相變材料；接著再將此通風單元與建築單元模型進行結合，成為一應用相變材料單元之控制通風系統，並針對各種通風模式，探討在各模式下相變材料之使用率與建築耗電量。
系統建立完畢後，則探討面對不同氣候時相變材料作用溫度範圍之選擇，接著進行相變材料用量與服務空間大小之關係討論，最後再討論相變材料單元中相變材料板之排列方式對耗電量之影響。
由於窗戶之存在與否會對室內耗電量產生影響，本研究亦對窗戶之模擬進行比較討論。接著探討本研究使用的應用相變材料單元之控制通風系統於溫帶氣候之冬季下是否亦能發揮其節能之效果，同時也探討了此情況下相變材料作用溫度與用量之選擇。

The Phase Change Material(PCM) will produce or release massive heat energy when processes phase change which is called latent heat. PCM can use the nature to reduced temperature oscillation amplitude or even achieve constant temperature. Therefore, phase change material is used widely in the building.
The application of phase change material in building is popular in the Western country than the Eastern country. Because of the Western country’s temperature during the night time in autumn and winter is so cold, the power consumption of heating is very height. Thus, they use the phase change material for the purpose of raising temperature at night. The phase change material will absorb massive quantity of heats by latent heat in daytime and release massive quantity of heat at night, which achieves the effect of heating air. But Taiwan is in the subtropics climatic region, the major problem is overheated in summer, that causes the massive power consumption of air condition. Therefore, the purpose of using phase change material in buildings is opposite to the Western country.
The main discussion for this paper is the energy-saving effect of phase change materials applied to buildings in Taiwan’s climate. Using commercial finite element software ANSYS simulate the model which have the proper boundary condition. Firstly, the operation of phase change material in the ventilation unit is discussed. There are two types of unit, single and multiple phase change materials. Then, the ventilation unit is combined with the building model to become the controlled phase change material ventilation system. For various ventilation modes, the usage rate of phase change materials and building power consumption in each mode were discussed.
After establishing the system, the selection of temperature ranges of the phase change material in different climates and the relationship between the amount of phase change material and size of service space is studied. Finally, this paper discussed the influence of phase change material plates’ arrangement on the building power consumption.
Because windows affect the power consumption of the room, the simulation of glass windows also considered. After that, this paper researches whether the controlled phase change material ventilation system used in this study can also achieve its energy-saving effect under the temperate climate in winter.

誌謝 I
摘要 III
目錄 VII
表目錄 XI
圖目錄 XIII
第一章 緒論 1
1.1 研究動機與目的 1
1.2 文獻回顧 2
1.3 各章內容 4
第二章 相變材料與熱物理相關理論 6
2.1 前言 6
2.2 相變材料 6
2.2.1 相變材料分類 7
2.3 熱傳遞理論 9
2.3.1 傳導 9
2.3.2 對流 10
2.3.3 輻射 10
2.4 太陽輻射理論 11
2.4.1 太陽方位角與高度角 11
2.4.2 傾斜面上之太陽輻射量 14
第三章 氣象資料收集與熱舒適度指標 21
3.1 前言 21
3.2 資料收集處理 21
3.2.1 臺灣氣象資料 21
3.2.2 國外氣象資料 22
3.3 熱舒適度指標與評估方法 23
3.3.1 中央氣象局之溫溼指數(THI) 23
3.3.2 評估方法 24
3.4 小結 26
第四章 ANSYS模型建立與討論 29
4.1 前言 29
4.2 有限元素分析軟體ANSYS 29
4.3 數值方法與解析解之比較 29
4.3.1 兩端固定溫度 30
4.3.2 一端絕熱一端熱對流 31
4.4 相變材料單元模型 32
4.4.1 單一相變材料模型 32
4.4.2 複合相變材料模型 33
4.4.3 模型3D與2D之比較 34
4.4.4 台灣氣候分析 35
4.5 建築單元模型 36
4.5.1 模型敘述 36
4.5.2 模型之簡化 37
4.5.3 相變材料牆板之效能分析 38
4.6 控制通風系統結合相變材料單元模型 39
4.6.1 系統裝置說明 39
4.6.2 控制通風之效能分析 41
4.6.3 控制通風結合相變材料單元效能分析 41
4.6.4 綜合比較 42
4.7 小結 43
第五章 應用含相變材料之通風單元於服務空間之耗電量設計 69
5.1 前言 69
5.2 服務月分與相變材料作用溫度之關係探討 69
5.3 服務空間與相變材料用量之關係探討 70
5.3.1 空間深度(Depth) 71
5.3.2 空間高度(Height) 72
5.4 相變材料於單元中之配置方式 73
5.4.1 形狀選擇 73
5.4.2 排列方式選擇 74
5.5 相變材料之用量檢驗 74
5.6 複合相變材料之比例選擇 76
5.7 小結 77
第六章 含窗戶建築單元模型 104
6.1 前言 104
6.2 窗戶的模擬 104
6.2.1 外部空氣與玻璃之接觸面 104
6.2.2 輻射於玻璃內部之傳遞 105
6.3 含窗建築單元於台灣氣候下之耗電量分析 106
6.4 小結 107
第七章 相變材料於溫帶氣候之數值模擬 112
7.1 前言 112
7.2 溫帶大陸氣候之舒適溫度與相變材料作用季節之介紹 112
7.3 服務月分與相變材料作用溫度之關係探討 113
7.4 服務空間與相變材料用量之關係探討 114
7.5 相變材料牆板與含相變材料之通風單元之長時間分析 115
7.6 小結 116
第八章 結論與未來展望 127
8.1 結論 127
8.2 未來展望 129
參考文獻 130

Alam, M., Sanjayan, J., Zou, P. X., Ramakrishnan, S., & Wilson, J. (2017). "Evaluating the passive and free cooling application methods of phase change materials in residential buildings: A comparative study". Energy and Buildings, Vol. 148, pp. 238-256.
Bejan, A. S., & Catalina, T. (2016). "The implementation of Phase Changing Materials in energy-efficient buildings. Case study: EFdeN Project". Energy Procedia, Vol. 85, pp. 52-59.
de Gracia, A., Navarro, L., Castell, A., Ruiz-Pardo, Á., Álvarez, S., & Cabeza, L. F. (2013). "Thermal analysis of a ventilated facade with PCM for cooling applications". Energy and Buildings, Vol. 65, pp. 508-515.
Iten, M., Liu, S., & Shukla, A. (2016). "Experimental study on the thermal performance of air-PCM unit". Building and Environment, Vol. 105, pp. 128-139.
Kreider, J. F., & Kreith, F. (1981). "Solar energy handbook".
Kreider, J. F., & Rabl, A. (1994). "Heating and cooling of Buildings: Design for Efficiency". New York: McGraw-Hill.
Li, D. H., & Lam, T. N. (2007). "Determining the optimum tilt angle and orientation for solar energy collection based on measured solar radiance data". International Journal of Photoenergy, 2007.
Liu, S., Iten, M., & Shukla, A. (2017). "Numerical study on the performance of an air—multiple PCMs unit for free cooling and ventilation". Energy and Buildings , Vol. 151, pp. 520-533.
Mewes, D., & Mayinger, F. (2008). "Heat and Mass Transfer". Germany: Springer.
Muneer, T. (2012). "Solar radiation and daylight models". Routledge.
Poirier, D., & Salcudean, M. (1988). "On numerical methods used in mathematical modeling of phase change in liquid metals". Journal of heat transfer, Vol. 110, pp. 562-570.
Pasupathy, A., & Velraj, R. (2008). "Effect of double layer phase change material in guilding roof for year round thermal management". Energy and Buildings , Vol. 40, pp. 193-203.
Pasupathy, A., Velraj, R., & Seeniraj, R. V. (2008). "Phase change material-based building architecture for thermal management in residential and commercial establishments". Renewable and Sustainable Energy Reviews , Vo. 12, pp. 39-64.
Steadman, R. G. (1984). "A universal scale of apparent temperature". Journal of Climate and Applied Meteorology, 23(12), pp. 1674-1687.
Tan, S. A. (1992). "Influence of pavement materials on the thermal environment of outdoor spaces". Building and Environment , Vol.27,No.3, pp. 289-295.
Woolf, H. M. (1968). "Report NASA TM-X-1646 NASA". Moffet Field.
Weinläder, H., Körner, W., & Strieder, B. (2014). "A ventilated cooling ceiling with integrated latent heat storage—monitoring results". Energy and Buildings, Vol. 82, pp. 65-72.
卜毅. (1994). "建築日照設計". 科技圖書股份有限公司.
丁銘顯. (2011). "廣義隔熱材料應用於增加室內熱舒適度之數值模擬". 國立台灣大學工學院土木工程學系碩士論文.
何明錦, 黃國倉, 王仁俊, 余文元, 林政賢.(2013)"臺灣建築能源模擬解析用逐時標準氣象資料TMY3之建置與研究". 內政部建築研究所.
吳昇威. (2010). "相變材料應用於增加室內熱舒適度之數值模擬". 國立台灣大學工學院土木工程學系碩士論文.
台灣內政部智慧綠建築資訊網站 : https://smartgreen.abri.gov.tw/index.php
香港天文台網站：http：//www.hko.gov.hk/abouthko/logoexplain/logoexplainc.htm
NOAA網站：http：//www.weather.gov/climate/
NREL網站：http：//www.nrel.gov/rredc/solar_data.html