Heat Transfer with Phase Change Problems Using microwave heating

使用微波加热的相变传热问题

• 批准号: 06650235
• 负责人: AOKI Kazuo
• 金额: $ 1.47万
• 依托单位: Nagaoka University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06650235/
• 关键词: Microwave Heating; Ice Melting; Phase Change; Drying of Packed Beds; Electric and Magnetic Fields; Heat Conduction; Heat and mass transfer; Temperature Control; 乾燥; 融解; 多孔質層; 加熱制御; 誘電物質; 伝熱制御; 粒子層

Microwave heating is becoming one of the most interesting methods for heating materials. In particular, using microwave for the mixture of liquid and solid phases, major part of microwave is absorbed to the part of liquid phase and the heating is more selective.In this study, the melting of ice and the drying of unsaturated packed beds due to microwave heating have been investigated experimentally and theoretically. The results to obtained are summarized as follows.1) In the melting of layrs composed of ice and water by microwave heating, the direction of melting against the incident microwave strongly depends on the difference in the dielectric properties between water and ice. The melting of ice by microwave heating was analyzed based on the one dimensional model.2) For the melting of layred packed beds, the internal melting occurred. The melting process was found to depend on the intensity of incident microwave, dielectric constant and initial temperature of the layr.3) In the drying of unsaturated packed beds by microwave heating, the temperature in a dry layr drops as drying proceeds and a smaller diameter of particles results in a faster drying time because of having a higher capillary force.

微波加热正在成为加热材料的最有趣的方法之一。特别是，使用微波的液相和固相的混合物，微波的大部分被吸收到液相的一部分，加热是更有选择性的。在本研究中，冰的融化和干燥的不饱和填充床由于微波加热进行了实验和理论研究。结果表明：（1）在微波加热融化冰和水组成的层时，水和冰的介电性质的差异强烈地决定了融化的方向。在一维模型的基础上，对微波加热下冰的融化过程进行了分析。2）对于层状填充床的融化，发生了内融化。3）在微波加热干燥不饱和填充床过程中，干燥层的温度随着干燥过程的进行而降低，颗粒直径越小，由于毛细作用力越大，干燥时间越快。

项目成果

青木和夫,星野 伸,綿貫順也,赤堀匡俊: "マイクロ波加熱による凍結粒子層の融解" 日本機械学会第74期通常総会講演論文集. (1997)

Kazuo Aoki、Shin Hoshino、Junya Watanuki、Masatoshi Akahori：“通过微波加热熔化冷冻颗粒层”日本机械工程师学会第 74 届普通会议记录（1997 年）。

Kazuo Aoki, Shin Hoshino, Junya Watanuki and Masatoshi Akahori: "Melting of Frozen Packed Beds by Microwave Heating" Proceedings of The 74th JSME Annual Conference. (1997)

Kazuo Aoki、Shin Hoshino、Junya Watanuki 和 Masatoshi Akahori：“微波加热融化冷冻填充床”第 74 届 JSME 年会论文集。

青木和夫,小野寺聡,赤堀匡俊,服部 賢: "マイクロ波加熱による粒子層の乾燥" 第33回日本伝熱シンポジウム講演論文集. 1. 129-130 (1996)

Kazuo Aoki、Satoshi Onodera、Masatoshi Akahori、Ken Hattori：“通过微波加热干燥颗粒层”第 33 届日本传热研讨会论文集。1. 129-130 (1996)。

Kazuo Aoki, Satoshi Onodera, Masatoshi Akahori and Masaru Hattori: "Drying of Porous Media due to Microwavw Heating" Proceedings of The 33rd National Heat Transfer Symposium of Japan. 129 (1996)

Kazuo Aoki、Satoshi Onodera、Masatoshi Akahori 和 Masaru Hattori：“微波加热导致的多孔介质的干燥”日本第 33 届全国传热研讨会论文集。

青木和夫,小野寺聡 赤堀匡俊,服部賢: "マイクロ波加熱による粒子層の乾燥" 第33回日本伝熱シンポジウム講演論文集. (1996)

Kazuo Aoki、Satoshi Onodera、Masatoshi Akahori、Ken Hattori：“通过微波加热干燥颗粒层”第 33 届日本传热研讨会论文集（1996 年）。