研究生: |
彭善玉 Shan-yu Peng |
---|---|
論文名稱: |
小型地源熱泵於空調冷房應用之初探 A Study on Application of Cooling System Integrated with Ground Source Heat Pump |
指導教授: |
江維華
Wei-Hwa Chiang |
口試委員: |
魏浩揚
Hao-Yang Wei 許晏堃 none |
學位類別: |
碩士 Master |
系所名稱: |
設計學院 - 建築系 Department of Architecture |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 中文 |
論文頁數: | 103 |
中文關鍵詞: | 地底溫度 、地源熱泵 、冷房 、熱交換器 、TRNSYS |
外文關鍵詞: | Underground temperature, Ground-source heat pump, Cooling, Ground heat exchanger, TRNSYS |
相關次數: | 點閱:330 下載:11 |
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誘導式建築設計手法能有效降低室內顯熱負荷,並降低主動式控制耗能。透過地源熱泵系統熱交換器之管線等相關構造設計,期望對於空調散熱系統,使其達到最大冷卻能力。從文獻之研究中可瞭解,1kW地源熱泵系統之能量消粍,可以得到 4kW 以上的熱或冷。而使用地源熱交換系統與冷凍機冷卻水做熱交換來吸收冷卻水的熱量,可顯著提升冷凍機的運轉效能(COP),達到節能的目的。
因此本研究透過對台灣科技大學2007年8月至2008年5月間的地底溫度量測與分析,紀錄其溫度及水位的變化;再利用TRNSYS電腦模擬解析方法,對空調散熱系統進行研究及分析,以了解其最佳熱交換器的設計;最後再將模擬延伸至位於台北地區地源熱泵系統的應用。
本研究中所測得的數據以G.L. -2m處的溫度最為穩定,平均溫度為23.8℃,而越往地底溫度的年變化則越大。而地源熱泵系統熱交換器最佳化的設計為:當熱交換器管長為160m、管內徑0.0508m、外徑0.06m、管內水流量為1000kg/hr時,熱泵機組的冷房效能最高,COP值可達6.74。另外由模擬得知台北地區的地溫偏高,深度要達到8米才可使9月的地溫降至25℃以下,而位於G.L.-8m處的水平式熱交換器可以使熱泵機組的效能(COP值)維持在5以上。
An approach of passive design in architecture is conducted to reduce the indoor heating load significantly, and reduced energy consumption for active control. A numerical model has been efficiently developed for prediction of energy conservation, ground-source heat pump system and passive thermal evaluation are perceived to apply the techniques for building energy saving. The energy consumption of 1 kW ground-source heat pump systems may gain more than 4 kW of heating or cooling load form former study. The ground-source heating exchange system with the chilled cooling water can significantly enhance the coefficient of performance (COP) of cooling system for achieving the purposes of energy saving.
This study is focused on measurements and analysis for the underground temperature at Taiwan University of Science and Technology from August of 2007 to May of 2008. First all, the contents of research works which is recorded the data of changes of temperature and water level, and then the air-conditioning cooling system is conducted the analysis by TRNSYS computer simulation for realizing the best heat exchanger design. Finally, the simulation is extended to apply the ground-source heat pump system for Taipei city area.
The results from the measurements with an average temperature of 23.8 ℃ which is the most stable at 2-m deep of underground, temperature of difference will be increased when goes down the deeper area. The optimization of design for ground-source heat pump system and heat exchanger which the COP value is up to 6.74. The length of heat exchanger is 160 m, the inner diameter of pipe is 0.0508 m, the outer diameter of pipe is 0.06 m and, water flow rate is 1000 kg / hr. Another results from the simulation that found the depth of eight meters to be achieved to drop to below 25℃ in September due to the high temperature of the period in Taipei, and 8m deep at the underground l of heat exchangers can maintain above the performance of heat pump system (COP) of 5 level.
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