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A Study on Chemical Heat Pipe with Energy Upgrading Function at High-Temperature level

Research Project

Project/Area Number 06452428
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field エネルギー学一般・原子力学
Research InstitutionNAGOYA UNIVERSITY

Principal Investigator

MATSUDA Hitoki  NAGOYA UNIV., Energy Engineering and Science, Associate Professor, 工学部, 助教授 (80115633)

Co-Investigator(Kenkyū-buntansha) WATANABE Fujio  NAGOYA UNIV., Chemical Engineering, Research Associate, 工学部, 助手 (70109312)
ITAYA Yoshinori  NAGOYA UNIV., Energy Engineering and Science, Research Associate, 工学部, 助手 (50176278)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1995: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1994: ¥2,100,000 (Direct Cost: ¥2,100,000)
KeywordsChemical Heat Pipe / Thermal Energy Transportation / Heat Exchange / Catalytic Reaction / Tube-Wall Reactor / Catalytic Packed-Bed / Equilibrium of Reaction / Chemical Heat Pump
Research Abstract

The heat excahge characteristics accompanied by an exothermic reaction at heat demand end of a chemical heat pipe system using SO_2/O_2/SO_3 reversible thermochemical reaction was discussed in a lab-scale unit. The effects of the reactant gas composition, the mass flow rate of reactant gas and heat exchange medium on the reaction and the heat exchange characteristics were discussed. Furthermore, a cpmparison between the experimental and calculated results obtained by using a two-dimensional mathematical model, in which the reaction and heat transfer was considered simultaneously, was performed. It was found that the heat exchange characteristics obtained from experiments can be explained tendentiously by the calcutated results. Under the adiabatic conditions, the temperature difference between the outlet and the inlet of the heat exchange medium increased with an increase of the mass flow rate of SO_2 and a decrease of the mass flow rate of the heat exchange medium, while the efficiency on the heat exchange process decreased with an increase of the mass flow rate of SO_2 and a decrease of the mass flow rate of the heat exchange medium.
In order to examine the temperature upgrading effect of the proposed chemical heat pipe, a calculation was made to estimate the effect of reaction pressure on the temperature upgrading. It is shown that the temperature difference, that is, the effect of temperature upgrading increased with an increase in both the molar ratio of SO_2 and the pressure in the reactor of heat demand end. On the other hand, it is shown that the value of COP increased with an increase in the molar ratio of SO_2 but decreased slightly with an increase of pressure in reactor of heat demand end. Consequently, it was clear that SO_2/O_2/SO_3 system can be to apply as a chemical heat pipe with chemical heat-pump function.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] 曽維平、松田仁樹、架谷昌信: "高温ケミカルヒートパイプにおける発熱部管壁反応器の熱交換特性" 化学工学論文集. 20. 504-512 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] W.P.Zeng、H.Matsuda、M.Hasatani: "Thermal Energy Transportation Characteristic of High-Temperature Chemical Heat Pipe Using SO_2/SO_3 Reversible Thermochemical Reaction" Journal of Energy,Heat and Mass Transfer. 16. 87-93 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Zeng W.P., H.Matsuda and M.Hasatani: "Heat Exchange Characteristics of Tube-Wall Reactor at Exothermic End for High-Temperature Chemical Heat Pipe" Kagaku Kogaku Ronbunshu. 20. 504-512 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Zeng W.P., H.Matsuda and M.Hasatani: "Termal Energy Transportation Characteristic of High-Temperature Chemical Heat Pipe Using SO_2/SO_3 Reversible Thermochemical Reaction" Journal of Energy, Heat and Mass Transfer. 16. 87-93 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 曽維平,松田仁樹,架谷昌信: "高温ケミカルヒートパイプにおける発熱部管壁反応器の熱交換特性" 化学工学論文集. 20. 504-512 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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