https://scholars.lib.ntu.edu.tw/handle/123456789/80401
標題: | 二相噴射泵的理論研發 Theoretical investigation of the two-phase jet pump |
作者: | 李雨 | 關鍵字: | 二相噴射泵;凝結;混合;增壓;局部模式;two-phase jet pump;condensation;mixing;pressure increase | 公開日期: | 31-七月-2001 | 出版社: | 臺北市:國立臺灣大學應用力學研究所 | 摘要: | 二相噴射泵為一可直接用熱能來驅動 的元件,除扮演泵的角色外,同時也具備 直接熱交換器及冷凝器的功能;但其弱點 為性能不高,故如何設計二相噴射泵使其 性能提升實為一重要工作。針對此點,本 計劃採用包含相變態的定常一維二相流理 論及熱力學,同時考慮凝結、混合及增壓 等現象,就二相噴射泵發展出一局部模 式,該模式因對噴射泵內複雜現象有較深 入的物理描述,且較現有文獻中的整體模 式週延,故期望此一局部模式對未來二相 噴射泵的設計能提供一較嚴謹的理論基 礎。 The two-phase jet pump is a device, which is driven directly by thermal energy. It simultaneously performs the functions of a pump, a direct-contact heat exchanger, and a condenser. The weak point for the application of the jet pump is its low coefficient of performance, and thus it is important to design the jet pump such that its performance is maximized under different operating conditions. The present project employs the theory of steady one-dimensional two-phase flow with phase change, with the proper consideration of condensation, mixing and pressure increase, to develop a local model for the two-phase jet pump. Such local model contains the essential physics of the complicated phenomenon in the jet pump, and is more detailed than the global model in the literature. Thus it is expected that the present local model can provide a more solid physical background for a proper design of the future two-phase jet pump. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/21599 | 其他識別: | 892212E002136 | DOI: | 10.1063/1.2364468 | Rights: | 國立臺灣大學應用力學研究所 |
顯示於: | 應用力學研究所 |
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892212E002136.pdf | 71.87 kB | Adobe PDF | 檢視/開啟 |
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