STUDY ON THERMAL SUPERCONDUCTING ELECTRO-HYDRO-DYNAMICAL HEAT PIPE

热超导电液动力热管研究

• 批准号: 08650344
• 负责人: SATO Masaki
• 金额: $ 1.41万
• 依托单位: HACHINOHE INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650344/
• 关键词: Electro-hydro-dynamics; Polarization effect; Polarization type EHD pump; EHD heat pipe; Large scale transportation; EHDポンプ; 長距離大量熱輸送

The purpose of the study is to develop a thermal superconducting electro-hydro-dynamical heat pipe (abbreviated as EHD heat pipe in the following) that is able to transport fast an amount of heat instead of transporting high-temperature water by using an electro-magnetic pump of low efficiency and high cost. The EHD heat pipe is used to make a system that uses effectively the heat of the sun, the terrestrial heat and the waste energy in industries at a community. The results are summarized every one year following.Results in 1996 (1) The heat transfer rate of the EHD thermosyphon is larger than that of the usual thermosyphon. Namely, the EHD liquid-pump is useful for heat transfer enhancement. (2) The electrical pressure arrived at 290(Pa) at the applied voltage 28(kV) by using the EHD pump made of a cylindrical electrode and a ring electrode. (3) Three EHD pumps by cascade use produce 1.63 times as large the electrical pressure as one EHD pump.Results in 1997 (1) One of driving force … More on the working fluid of the EHD heat pipe is obtained by differentiating EィイD12ィエD1 by the spatial coordinates and another one is obtained by differentiating ε by the spatial coordinates. Where, E is the electric field intensity between the electrodes and ε is the permitivity of the working fluid. (2) It appears that the driving force on the working fluid is caused by the nonlinear effect that the relationship between the polarization and the electric field intensity is nonlinear.Results in 1998 (1) In case of using the transformer oil (G) as the working fluid, the electrical pressure was decreased from 106.8(Pa) to 33.7(Pa) at the applied voltage 32(kV) when the temperature of the oil changed from 10(℃) to 18(℃). It appears that the orientation polarization is prevented as the thermal agitation of the polar molecules become quick with the rise of the temperature of the working fluid. (2) The EHD pump spent about three minutes for the electrical pressure to arrive at the steady state value 56.2(Pa) after the voltage of 32(kV) was applied. It appears that the orientation polarization is prevented by the thermal agitation and the interaction between the polar molecules. Less

本研究的目的是开发一种热超导电流体动力热管（以下简称EHD热管），该热管能够快速传输大量的热量，而不是使用效率低且成本高的电磁泵来传输高温水。EHD热管用于制造一个系统，该系统有效地利用太阳热、地热和社区工业中的废能。1996年的研究结果：（1）EHD热虹吸管的传热量比普通热虹吸管的传热量大;也就是说，EHD液体泵对于传热强化是有用的。(2)采用圆柱形电极和环形电极构成的EHD泵，在外加电压28（kV）时，电场压力达到290（Pa）。(3)三台EHD泵串联使用，产生的电压力是一台EHD泵的1.63倍。 ...更多信息 对EHD热管工质的影响可通过对EHD热管工质的空间坐标E_（12）_（其中，E是电极之间的电场强度，ε是工作流体的介电常数。(2)1998年的结果（1）在使用Transformer oil（G）作为工作流体的情况下，当油温从10 ℃变化到18 ℃时，在外加电压32 kV时，压力从106.8 Pa下降到33.7 Pa。看来，由于极性分子的热搅动随着工作流体的温度的升高而变得快速，因此防止了取向极化。(2)在施加32（kV）的电压之后，EHD泵花费大约三分钟使电压力达到稳态值56.2（Pa）。看来，热搅拌和极性分子之间的相互作用阻止了取向极化。少

项目成果

M.Sato: "Solar Heat Transfer Enhancement by Electrohydrodynamical Effect" PROCEEDINGS of ISES 1997 SOLAR WORLD CONGRESS. 3. 382-387 (1997)

M.Sato：“通过电流体动力学效应增强太阳能传热”ISES 1997 太阳能世界大会论文集。

佐藤 正毅: "ソーラー電気流体力学(EHD)ヒートパイプの凝縮液駆動力の検討" 電気学会研究会資料、新エネルギー環境研究会. FTE-98-7〜9. 13-17 (1998)

佐藤正武：“太阳能电流体动力学（EHD）热管的凝结水驱动力的研究”，IEEJ研究组材料，新能源与环境研究组，FTE-98-7～9（1998）。

M. Sato: "Solar Heat Transfer Enhancement by Electrohydrodynamical Effect"PROCEEDINGS of ISES 1997 SOLAR WORLD CONGRESS. 3. 382-387 (1997)

M. Sato：“通过电流体动力学效应增强太阳能传热”ISES 1997 太阳能世界大会论文集。

佐藤正毅,中野 茂: "分極型EHDポンプの電気的圧力" 平成10年電気学会全国大会講演論文集. 分冊7. 348- (1998)

Masatake Sato、Shigeru Nakano：“极化 EHD 泵的电压力”日本电气工程师学会 1998 年全国会议论文集第 7 卷 348- (1998)。

佐藤正毅: "多段配置分極型EHDポンプの電圧特性" 平成9年電気学会全国大会講演論文集. 7. 311 (1997)

Masatake Sato：“多级极化型EHD泵的电压特性”日本电气工程师学会1997年全国会议论文集7. 311（1997）。