• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Boiling and Condensation Heat Transfer for New Refrigerants Flowing in Horizontal Tubes

Research Project

Project/Area Number 13650230
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionKyushu University

Principal Investigator

OHISHI Katsumi  Kyushu University, Faculty of Eng., Research Assistant, 大学院・工学研究院, 助手 (00037970)

Co-Investigator(Kenkyū-buntansha) MORI Hideo  Kyushu University, Faculty of Eng., Associate Professor, 大学院・工学研究院, 助教授 (70150505)
YOSHIDA Suguru  Kyushu University, Faculty of Eng., Professor, 大学院・工学研究院, 教授 (30037741)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2002: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2001: ¥2,700,000 (Direct Cost: ¥2,700,000)
KeywordsNew Refrigerant HFE245mc / New Refrigerant HFE143m / Boiling / Condensation / Horizontal Tube / Grooved Tube
Research Abstract

Hydrofuluoroethers (HFEs) have recently been proposed as substitutes to conventional refrigerants including HFCs, since HFEs have Zero ozone depletion potential and also smaller global warning potential. HFE245mc and HFE143m are such substitutes to replace CFC114 especially for heat recovery heat pump systems and HFC134a for refrigerating systems respectively. In the present study, experiments were made on boiling and condensation heat transfer for HFE245mc and HFE143m flowing inside horizontal tubes.
1. For each new refrigerant, there was found no peculiar difference from conventional refrigerants in the characteristics of boiling heat transfer, as results of comparisons of measured local boiling heat transfer coefficients with the authors' correlation applicable to conventional refrigerants.
2. Also in condensation, the heat transfer coefficients for each new refrigerant can be satisfactorily predicted by the Hraguchi et al's correlation for conventional refrigerants.
3. Comparing the values calculated from the correlations, the heat transfer coefficient for HFE245mc showed to be higher than or equal to that of CFC114 for boiling and condensation.
4. Similarly, the heat transfer coefficient for HFE143m showed to be almost equal to that of HFC134a for boiling and condensation.
5. From the standpoint of heat transfer, therefore, there was no problem in the use of HFE 245mc and HFE143m as the alternative refrigerants to CFC114 and HFC134a, respectively.
6. In order to study the enhancement of the heat transfer coefficients, now, experiments are being on boiling and condensation for HFE245mc and HFE143m flowing inside spirally grooved tubes.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] Hideo Mori et al.: "Boiling and Condensation Heat Transfer for a New Refrigerant HFE-245mc Flowing in a Horizontal Tube"Proc. of Therinophysical Properties and Transfer Processes, IIR Conference Commission B1. 282-289 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 吉田 駿 et al.: "新規冷媒HFE-245mcの水平管内沸騰・凝縮熱伝達"日本冷凍空調学会論文集. 18,13. 355-363 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 後藤景亮 et al.: "新規冷媒HFE-143mの水平管内沸騰・凝縮熱伝達"平成13年度日本冷凍空調学会学術講演会論文集. 201-204 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 森 英夫 et al.: "次世代冷媒HFE-245mcおよびHFE-143mの水平管内沸騰・凝縮熱伝達"平成14年度日本冷凍空調学会学術講演会論文集. 523-526 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hideo Mori et al.: "Boiling and Condensation Heat Transfer for New Refrigerants HFE245mc and HFE143m Flowing in Horizontal Tubes"Proc. of the Asian Conference on Refrigeration and Air Conditioning 2002. 29-38 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hideo Mori et al.: "Boiling and Condensation Heat Transfer for a New Refrigerant HFE-245mc Flowing in a Horizontal Tube"Proc.of Thermophysical Properties and Transfer Processes, IIR Conference Commission B1. 282-289 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Suguru Yoshida et al.: "Boiling and Condensation Heat Transfer for a New Refrigerant HFE-245mc Flowing in a Horizontal Tube"Trans.of the Japan Society of Refrigerating and Air Conditioning Engineers. Vol.18-13. 355-363 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Keisuke Goto et al.: "Boiling and Condensation Heat Transfer for a New Refrigerant HFE-143m Flowing in a Horizontal Tube"Proc.of 2001 JSRAE Annual Conference. 201-204 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hideo Mori et al.: "Boiling and Condensation Heat Transfer for New Refrigerants HFE245mc and HFE143m Flowing in Horizontal Tubes"Proc.of 2002 JSRAE Annual Conference. 523-526 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hideo Mori et al.: "Boiling and Condensation Heat Transfer for New Refrigerants HFE245mc and HFE143m Flowing in Horizontal Tubes"Proc.of the Asian Conference on Refrigeration and Air Conditioning 2002. 29-38 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 後藤景亮 et al.: "新規冷媒HFE-143mの水平管内沸騰・凝縮熱伝達"平成13年度日本冷凍空調学会学術講演会論文集. 201-204 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] 森 英和 et al.: "次世代冷媒HFE-245mcおよびHFE-143mの水平管内沸騰・凝縮熱伝達"平成14年度日本冷凍空調学会学術講演会論文集. 523-526 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideo Mori et al.: "Boiling and Condensation Heat Transfer for New Refrigerants HFE245mc and HFE143m Flowing in Horizontal Tubes"Proc. of the Asian Conference on Refrigeration and Air Conditioning 2002. 29-38 (2002)

    • Related Report
      2002 Annual Research Report

URL: 

Published: 2001-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi