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Characteristics of Drying due to Microwave Heating

Research Project

Project/Area Number 08650246
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionNagaoka University of Technology

Principal Investigator

AOKI Kazuo  Nagaoka University of Technology, Department of Mechanical Engineering, Professor., 工学部, 教授 (60115095)

Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1997: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1996: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsMIcrowave Heating / Drying / Rectangular Wave Guide / Packed Beds / Electric and Magnetic Field / Reflection / Multi-layered Structure / 気液二相流 / 毛管力 / 三次元 / 熱物質伝達
Research Abstract

Microwave heating is one of the most Interesting methods for heating materials. In this report, the drying of water saturated packed bed and the heating of multi-layered packed beds by using microwave in rectangular wave guide has been investigated theoretically and experimentally.
The results obtained here are summarlzed as follows ;
(1)When microwave is directly applied to a high dielectric material, most of it is reflected on the surface. Setting a relatively low dielectric materials in front of a high dielectric material reduces to the reflection.
(2)In heating of multi-layered packed beds, the reflection rate corresponding to the performance of the heating strongly depends on the dielectrisity and the thickness of the additiuonal material. The predicted results for the reflection rates of microwave and the temperature distributions In the sample are in agreement with the experimental results.
(3)In drying due to microwave heating, the dry layer having a low dielectrisity acts as a layer of avoiding relrection and the temperature in the wet layer arizes and it in the dry layer drops as drying proceeds.
(4)Comparing of the usual dring process using hot air, the drying due to microwave heating has the relatively uniform drying rate.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 青木和夫: "マイクロ波加熱による凍結粒子層の融解" 日本機械学会74期通常総会講演論文集. 394-396 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 青木和夫: "矩形導波管を用いたマイクロ波による水の加熱" 日本機械学会熱工学講演会講演論文集. 186-187 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 青木和夫: "矩形導波管を用いたマイクロ波による凍結粒子層の融解" 第35回日本伝熱シンポジウム講演論文集. 903-904 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 青木和夫: "矩形導波管を用いたマイクロ波による多層物体加熱の特性" 日本機械学会熱工学講演会講演論文集. 235-236 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Aoki, S.Hoshino, M.Akahori and J.Watanuki: "Melting of Frozen Packed Beds by Microwave Heating" Proc.of the 74th JSME Conf.394-396 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Aoki, J.Watanuki, T.Yokoyama and M.Hattori: "Microwave Heating of Water Using a Rectangular Wave Guide" Proc.of Thermal Engineering Conf.186-187 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Aoki, J.Watanuki, T.Yokoyama and M.Akahori: "Melting of Frozen Packed Beds by Microwave Using a Rectangular Wave Guide" Proc.of the 35th National Heat Transfer Sympo.903-904 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Aoki, T.Yokoyama, Y.Yamamoto and M.Akahori: "Characteristics of Microwave Heating for Multi-layered Materials Using a Rectangular Wave Guide" Proc.of Thermal Engineering Conf.235-236 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 青木和夫: "マイクロ波加熱による凍結粒子層の融解" 日本機械学会74期通常総会講演論文集. 394-396 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 青木和夫: "矩形導波管を用いたマイクロ波による水の加熱" 日本機械学会熱工学講演会講演論文集. 186-187 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 青木和夫: "矩形導波管を用いたマイクロ波による凍結粒子層の融解" 第35回日本伝熱シンポジウム講演論文集. (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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