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題名 | 臺北盆地節能樁之散熱成效評估=Evaluation of Heat Dissipation Capacity of Geothermal Energy Pile in Taipei Basin |
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作者 | 廖洪鈞; 魏哲立; Liao, H. J.; Wei, J. L.; |
期刊 | 地工技術 |
出版日期 | 20140300 |
卷期 | 139 2014.03[民103.03] |
頁次 | 頁87-94 |
分類號 | 446.64 |
語文 | chi |
關鍵詞 | 節能樁; 熱交換能力; 臺北盆地; Geothermal energy pile; Heat exchange capacity; Taipei basin; |
中文摘要 | 本文透過一系列的現場試驗來評估以封閉式循環水系統(節能樁)進行臺北盆地地層散熱之成效。試驗場地位在台灣科技大學校園內,使用貫入地下水井中的封閉式雙重循環水管,循環水之熱源來自15RT冷氣機之排熱。藉由試驗中所量測到之循環水在熱交換過程中之溫升和溫降行為,可估算此節能樁在該地層和地下水層之散熱能力。試驗結果顯示,因15RT冷氣機排熱量大於地層和地下水層之散熱能力,致使節能樁之循環水溫以接近線性的速率快速上升,而冷氣機也因此而過熱跳機;當關閉節能樁循環水散熱系統所有運轉設備後,循環水溫即以先快後慢之非線性速率下降(即地層散熱速率)。利用現地試驗結果與TEMP/W地熱分析程式,可反算出台北盆地地下水位下之松山層和景美層平均熱傳導係數;而由循環水之溫升和溫降行為,也可得出此一節能樁系統與不同冷房能力之冷氣機搭配使用時之運轉模式。 |
英文摘要 | A series of field tests on the heat dissipation capacity of a closed circulation water system (geothermal energy pile) installed in Taipei basin soil was carried out and evaluated in this paper. The test site was located in the campus of NTUST. A double tube closed pipe system installed in a well was used to simulate the geothermal energy pile; a 15 RT air conditioner was used as the heat source. The temperature change of circulating water to and fro the well was recorded to evaluate the heat dissipation capacity of this closed pipe system. When the 15 RT air conditioner was on, the temperature of circulating water increased quickly with time and caused the air conditioner to shut down due to overheat. After the air conditioner was off, the temperature of water in the pipe dropped back to the in-situ groundwater temperature. Using the TEMP/W software and the measured temperature of circulating water during the test, the average coefficient of heat conductivity (k) of subsoil (Sonshan and Chingmei Layers) can be obtained. Besides, the on-off operation patterns for air conditioners with different capacities can also be established when they were working with this closed type circulating water system. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。