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題 名 | 駐波型熱聲致冷機技術之研究=The Technological Study of Standing-Wave Thermoacoustic Refrigerator |
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作 者 | 黃博全; 涂正輝; 林秉鋒; 李長峰; | 書刊名 | 臺北科技大學學報 |
卷 期 | 34:2 2001.09[民90.09] |
頁 次 | 頁113-132 |
分類號 | 446.643 |
關鍵詞 | 熱聲致冷; 片堆; 駐波; 溫度梯度; Thermoacoustic; Stack; Standing wave; Temperature gradient; |
語 文 | 中文(Chinese) |
中文摘要 | 由於現代社會能源的短缺以及大氣臭氧層的被破壞,學者及業界不斷的嘗試著去提升傳統冷凍系統的性能係數COP值以節省能源、尋找替代冷媒或研發新的冷凍技術來改善臭氧層遭破壞的問題,本研究即以此方向為出發點,利用熱聲致冷機不使用CFC碳氟化合物冷媒、構造簡單、無段容量控制的優點(使該致冷機具有成為未來冷凍空調主流產品之潛力),參考現有之相關設計資料文獻,以實作之方式設計開發一具駐波型熱聲致冷雛型機,並測量分析其在各種不同操作條件下之性能,這些操作條件包括以不同的工作流體、充氣壓力、振盪壓力、片堆結構,來量測熱聲致冷效應,並記錄其資料。實驗結果顯示熱聲致冷機共振腔內片堆中存有熱聲效應現象,即沿片堆方向有溫度梯度存在,且其溫差大小會隨充氣壓力與振盪壓力振幅的增加而增大,而變換片堆結構與工作流體亦會影響此溫度差,唯不如前者明顯。又本熱聲致冷雛型機本體最大安全抗張強度為10Kg/cm²,在此充氣壓力下,以氬氣為工作流體,片堆兩端最大溫差可達到3℃。最後,綜合實驗結果分析得知增加充填壓力或振盪壓力振幅、提高聲波產生器效率等方式,可提升致冷機的低溫效果與冷凍能力。 |
英文摘要 | Because of the shortage of energy in the modern society and the destruction of ozone layer in the atmosphere, the experts in the academy and industry have been making a lot of efforts continuously to promote the coefficient of performance (COP) of the refrigerator system for energy-saving purpose, and to find replacement refrigerant or to develop entirely new refrigeration technology for resolving ozone-depletion problem. Among those methods mentioned, a innovational technology--thermoacoustic refrigeration device, which utilizes no environmentally hazardous gases, doest not need any moving parts and can use proportional control, has been considered as a potential alternative to replace conventional refrigerator. Based on the above viewpoints, according to the literature in the reference, a working model of this invention has been developed and tested under different operating conditions. The experimental results show that the phenomenon of thermoacoustic effect exists on the stack, i.e., there is a temperature gradient along the length of stack. In addition, Comparison of the effect of different variant on the stack temperature difference indicated that the mean or oscillation pressure has a more significant influence than the stack structure or the kind of working fluid on the thermoacoustic effect. In addition, the maximum stack temperature difference obtained in this study in 3°C at the mean operating pressure 10kg/cm² with working fluid Argon. It is suggested that the larger amplitude of oscillation pressure be used to achieve a lower cooling effect as well as a better refrigerating capacity. |
本系統中英文摘要資訊取自各篇刊載內容。