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Enhancement of Flow Boiling and Condensation Heat Transfer to Alternative Refrigerant Mixtures for HCFC-22 in Tubes

Research Project

Project/Area Number 08555057
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Thermal engineering
Research InstitutionKYUSU UNIVERSITY

Principal Investigator

YOSHIDA Suguru  Kyushu Univ., Grad. Sch. Of Eng., Professor, 工学研究科, 教授 (30037741)

Co-Investigator(Kenkyū-buntansha) MORI Hideo  Kyushu Univ., Grad. Sch. Of Eng., Associate Professor, 工学研究科, 助教授 (70150505)
KOYAMA Shigeru  Kyushu Univ., Inst. Of Adv. Mat Study, Professor, 機能物質科学研究所, 教授 (00153693)
HONADA Hiroshi  Kyushu Univ., Inst. Of Adv. Mat Study, Professor, 機能物質科学研究所, 教授 (00038580)
MOTEGI Hitoshi  Matsushita Elec. Ind. Co., Senior Engineer, 空調研究所, 主任技師
TAKAMATSU Hiroshi  Kyushu Univ., Inst. Of Adv. Mat Study, Associate Professor, 機能物質科学研究所, 助教授 (20179550)
Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥13,600,000 (Direct Cost: ¥13,600,000)
Fiscal Year 1998: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1997: ¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 1996: ¥8,900,000 (Direct Cost: ¥8,900,000)
KeywordsAlternative Refrigerant Mixtures for HCFC-22 / Enhancement of Heat Transfer / Boiling Heat Transfer / Condensation Heat Transfer / Horiaontal Flow / Pressure Drop
Research Abstract

Experiments were made on convective boiling and condensation heat transfer for the flow of alternative refrigerant mixtures of R-410A and R-407C for HCFC-22 inside horizontal micro-fin and herringbone tubes, and following results were obtained.
In general, the heat transfer for R-410A can he regarded as a pure refrigerant heat transfer, but the heat transfer coefficient for R-407C reduces due to a mass transfer resistance at low quality and low flow rate in both the tubes.
In boiling, the heat transfer coefficient for both the mixtures increases with increasing mass flow rate. With both the tubes, the heat transfer is greatly enhanced over a smooth tube ; enhancement becomes larger in the micro-fin tube at low flow rate but in the herringbone tube at high flow rate. Observations of air-water two-phase flow behavior in both the tubes were made to explain the mechanism of the heat transfer enhancement.
In condensation of both the mixtures, the heat transfer coefficient increases with increasing mass flow rate, but there is little effect of heat flux. The enhancement of condensation heat transfer in the herringbone tube becomes larger at low quality and low flow rate compared to the micro-fin tube. A method for predicting the local condensation heat transfer coefficient was developed for the condensation of binary and ternary refrigerant mixtures inside a horizontal smooth tube, and a prediction method was also presented for film condensation heat transfer in the micro-fin tube based on a flow observation.
In both the tubes, a pressure drop for R-407C is generally 20 to 30 % higher than that for R-410A corresponding to the difference in the vapor density. The pressure drop in the herringbone tube was a maximum of 50% larger than that in the micro-fin tube.

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] 大石克巳: "2成分混合冷媒HFC-32/HFC-125の水平蒸発管内熱伝達"平成8年度日本冷凍協会学術講演会講演論文集. 45-48 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 森英夫: "非共沸混合冷媒HFC-32/HFC-125/HFC-134aおよびHFC-32/HFC-134aの水平蒸発管内熱伝達と圧力損失"日本冷凍空調学会論文集. 14・1. 39-45 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Shigeru KOYAMA: "Condensation of Binary Refrigerant Mixtures in a Horizontal Smooth Tube"Thermal Science and Engineering. 6・1. 123-129 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 野津滋: "冷媒のマイクロフィン付き水平管内凝縮(環状流領域における熱伝達の数値解析)"日本機械学会論文集. 64・623. 300-307 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 森英夫: "HCFC-22代替混合冷媒の水平管内凝縮熱伝達"第33回空気調和・冷凍連合講演会講演論文集. 53-56 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 森英夫: "ら旋微細溝付管内空気・水二相流の流動様相の観察"第36回日本伝熱シンポジウム講演論文集. 1. 23-24 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 森英夫: "冷媒の水平平滑蒸発管内熱伝達係数の予測式の修正"日本冷凍空調学会論文集. 16・2. 177-187 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 柿本益志: "冷媒の水平内面ら旋微細溝付蒸発管内の熱伝達係数整理式に関する検討"日本機械学会長崎地方講演会講演論文集. 153-154 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 大石克巳: "HCFC-22代替混合冷媒の水平管内凝縮熱伝達(第2報)"平成11年度日本冷凍空調学会学術講演会講演論文集. 77-80 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 小山繁: "三成分混合冷媒の水平管内凝縮"平成11年度日本冷凍空調学会学術講演会講演論文集. 81-84 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 森英夫: "HCFC-22代替混合冷媒の水平W溝付蒸発管内熱伝達"平成11年度日本冷凍空調学会学術講演会講演論文集. 97-100 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Katsumi OHISHI: "Heat Transfer to a Binary Refrigerant Mixture of HFC-32/HFC-125 Flowing in Horizontal Evaporator Tubes"Proc. Pf 1996 JAR Annual Conference. (in Japanese). 45-48 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Hideo MORI: "Heat Transfer and Pressure Drop for Flow Boiling of Non-Azeotropic Refrigerant Mixtures of HFC-32/HFC-125/HFC-134a and HFC-32/HFC-134a in Horizontal Tubesi"Trans.of the JSRAE. Vol.14,No.1(in Japanese). 39-45 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Shigeru KOYAMA: "Condensation of Binary Refrigerant Mixtures in a Horizontal Smooth Tube"Thermal Science and Engineering. Vol.6,No.1. 123-129 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Shigeru NODU: "Condensation of Refrigerants in Horizontal Microfin Tubes (Numerical Analysis of Heat Transfer for Annular Flow Regime)"Trans. Of the Jap. Soc.Mech. Eng. Vol.64,No.623(in Japanese). 300-307 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Hideo MORI: "Convective Condensation Heat Transfer to Alternative Refrigerant Mixtures in Horizontal Tubes"Proc. Of 33rd Jap. Joint Conf. On Air-conditioning and Refrigeration. (in Japanese). 53-56 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Hideo MORI: "Observation of Air-Water Two-Phase Flow Behavior in a Spirally Grooved Tube"Proc. Of 36th Nat.Heat Transfer Symp. Of Jap.. Vol.1.(in Japanese). 23-24 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Hideo MORI: "Reform of the Correlation for the Prediction of Heat Transfer Coefficient for Refrigerants Flowing in Horizontal Evaporator Tubes"Trans. Of the JSRAE. Vol.16,No.2.(in Japanese). 177-187 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yasushi KAKIMOTO: "Investigation into Correlation of Heat Transfer Coefficient for Freon Flowing in Horizontal Grooved Evaporator Tubes"Prepr. Of the Jap. Soc. Mech Eng. No.998-3.(in Japanese). 153-154 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Katsmi OHISHI: "Convective Condensation Heat Transfer to Alternative Refrigerant Mixtures in Horizontal Tubes (2nd Report)"Proc. Of 1999 JSRAE Annual Conference. (in Japanese). 77-80 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Shigeru KOYAMA: "Condensation of Ternary Refrigerant Mixtures in a Horizontal Tube"Proc. Of 1999 JSRAE Annual Conference. (in Japanese). 81-84 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Hideo MORI: "Convective Boiling Heat Transfer to Alternative Refrigerant Mixtures in Horizontal Tubes"Proc. Of 1999 JSRAE Annual Conference. (in Japanese). 97-100 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 小山繁: "混合冷媒と蒸気圧縮式ヒートポンプサイクルシステム" 第9回エネルギーシンポジウム(早稲田大学理工総研主催)論文集. 20-27 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 兪堅: "自然系混合冷媒用二重管式凝縮器の伝熱性能の予測計算" 第35回日本伝熱シンポジウム講演論文集. 1. 389-390 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 屋良朝康: "混合冷媒用蒸気圧縮式ヒートポンプシステムの性能予測方法" 第35回日本伝熱シンポジウム講演論文集. 3. 851-852 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 森英夫: "HCFC-22混合冷媒の水平管内凝縮熱伝達" 第33回空気調和・冷凍連合講演会講演論文集. (発表予定). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 森英夫: "ら旋微細溝付管内空気・水二相流の流動様相の観察" 第36回日本伝熱シンポジウム講演論文集. (発表予定). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 森 英夫: "非共沸混合冷媒HFC-32/HFC-125/HFC-134aおよびHFC-32/HFC-134aの水平蒸発管内熱伝達と圧力損失" 日本冷凍空調学会論文集. 14-1. 39-45 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Nozu: "Flow Characteristics of Condensing Two-Phase Flow in Horizontal Microfin Tubes" Proc.ASME Fluids Engineering Division. FED-Vol.244. 119-129 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 兪 堅: "純冷媒の水平内面螺旋溝付管内凝縮-局所熱伝達係数の整理式作成の試み-" 九州大学機能科学研究所報告. 10-2. 145-150 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 小山 繁: "3成分混合冷媒の管内凝縮特性の予測計算法" 第34回日本伝熱シンポジウム講演論文集. 3. 313-314 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 森 英夫: "冷媒の水平蒸発管内熱伝達予測に用いるぬれ境界角度の式の修正" 日本機会学会熱工学講演会講演論文集. 107-109 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 森 英夫: "3成分非共沸混合冷媒HFC-32/HFC-125/HFC-134aの水平蒸発管内熱伝達" 第30回空気調和・冷凍連合講演会講演論文集. 153-156 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 大石 克巳: "2成分混合冷媒HFC-32/HFC-125の水平蒸発管内熱伝達" 平成8年度日本冷凍協会学術講演会講演論文集. 45-48 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 森 英夫: "非共沸混合冷媒HFC-32/HFC-125/HFC-134aおよびHFC-32/HFC-134aの水平蒸発管内熱伝達と圧力損失" 日本冷凍協会論文集. 14-1. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 小山 繁: "3成分混合冷媒の管内凝縮特性の予測計算法" 第34回日本伝熱シンポジウム講演論文集. (発表予定). (1997)

    • Related Report
      1996 Annual Research Report

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

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