- 著者
- 野田 英嗣 WIDYAPARAGA Adhika 小清水 孝夫 迫田 直也 河野 正道 高田 保之
- 出版者
- 一般社団法人日本機械学会
- 雑誌
- 動力・エネルギー技術の最前線講演論文集 : シンポジウム
- 巻号頁・発行日
- vol.2012, no.17, pp.109-110, 2012-06-20
Thermoacoustic refrigeration is a very attractive method of temperature control due to its environment friendliness. The thermoacoustic heat pumping occurs within a regenerator positioned in the thermoacoustic device. The acoustic field within the device consists of acoustic travelling waves propagating in positive and negative directions and as such, the regenerator temperature gradient will be influenced by both. To investigate the effect of these individual travelling waves, we constructed a thermoacoustic device consisting using two opposite facing speakers thus enabling manipulation of positive and negative direction travelling waves. By decomposing the measured acoustic field into its positive and negative propagating components and calculating the acoustic power using the two sensor method, the effect of the individual travelling waves on the direction of acoustic power and regenerator temperature gradient was observed.
- 著者
- 廣松 卓真 小清水 孝夫 WIDYAPARAGA Adhika 河野 正道 高田 保之
- 出版者
- 一般社団法人日本機械学会
- 雑誌
- スターリングサイクルシンポジウム講演論文集 (ISSN:09189238)
- 巻号頁・発行日
- vol.2014, no.17, pp.71-72, 2014-12-05
We have constructed and tested a shell and tube heat exchanger with a dual speaker thermoacoustic device. We have tested a shell and tube heat exchanger by changing the phase between two speakers at both ends of the device. Five thermocouples are positioned within the regenerator and inlet and outlet water temperature were measured with two other thermocouples. Two pressure sensors are positioned each side of the device along the regenerator. We have measured the regenerator temperature and pressure at both sides of the regenerator with changing the mass flow rate of coolant water. The temperature distribution of regenerator and the acoustic power were gained from measured values.
1 0 0 0 OA ぬれと表面張力
- 著者
- 高田 保之
- 出版者
- 社団法人 日本伝熱学会
- 雑誌
- 伝熱 (ISSN:13448692)
- 巻号頁・発行日
- vol.43, no.178, pp.43-48, 2004 (Released:2010-12-16)
- 参考文献数
- 6
- 被引用文献数
- 1
- 著者
- 城田 農 吟田 智之 伊藤 衡平 村松 秀隆 高田 保之 藤井 丕夫
- 出版者
- 一般社団法人日本機械学会
- 雑誌
- 動力・エネルギー技術の最前線講演論文集 : シンポジウム
- 巻号頁・発行日
- vol.2008, no.13, pp.269-270, 2008-06-18
A novel measurement method for evaluating hydrogen solubility in water is developed Purified water is exposed to high-pressure hydrogen in a gas-liquid equilibrium cell of approximately 100 cc, and than gaseous component in the water sample of approximately 10 cc is analyzed with quadruple mass spectrometry. The purpose of this study is to establish hydrogen solubility data in water up to 29 MPa and to 75 ℃. Preliminary measurements under low pressure (up to 1 MPa) show that the deviation of measured solubility lies within the range of the estimated uncertainty of measurement. We reveal that the measurement uncertainty of the present method highly depends on the background intensity for hydrogen in the mass spectrometry.