Performance Analysis and Optimization of a Multi-Functional CO2 Heat Pump Water Heating System by Integrating 1D and 3D Analyses

• Project/Area Number: 15K06689
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Energy engineering
• Research Institution: Osaka Prefecture University
• Principal Investigator: YOKOYAMA Ryohei 大阪府立大学, 工学(系)研究科(研究院), 教授 (70158385)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: ヒートポンプ / 冷媒 / 二酸化炭素 / 給湯 / 貯湯 / システム性能 / 予測 / 最適化 / 省エネルギー / 自然冷媒 / 数値シミュレーション / 性能推定

Outline of Final Research Achievements

CO2 heat pump water heating systems were developed as one of the most important technologies toward low-carbon society. In this research, a method of analyzing the performance of a multi-functional CO2 heat pump water heating system has been established by integrating one-dimensional numerical analysis and three-dimensional experimental analysis. In addition, the performance analysis has been conducted under several conditions and operation conditions have been determined optimally by applying this method.

Research Products

• [Presentation] CO2ヒートポンプ給湯システムの運転条件を考慮した性能分析 (2018)
  • Author(s): 石原瑞紗, 横山良平, 涌井徹也
  • Organizer: 日本機械学会関西支部第93期定時総会講演会
• [Presentation] 多機能CO2ヒートポンプ給湯システムにおける性能日変化の推定および運転条件の最適化 (2017)
  • Author(s): 前川純一, 横山良平, 涌井徹也
  • Organizer: 日本機械学会関西支部第92期定時総会講演会
  • Place of Presentation: 大阪大学吹田キャンパス（大阪府・吹田市）
  • Year and Date: 2017-03-13
• [Presentation] Performance Analysis of a Multi-Functional CO2 Heat Pump Water Heating System (2017)
  • Author(s): R. Yokoyama
  • Organizer: 9th Kyoto International Forum for Environment and Energy
  • Place of Presentation: 同志社大学寒梅館（京都府・京都市）
  • Year and Date: 2017-03-07
  • Int'l Joint Research
• [Presentation] 多機能CO2ヒートポンプ給湯システムにおける性能日変化の推定および運転条件の決定 (2017)
  • Author(s): 前川純一, 横山良平, 涌井徹也
  • Organizer: エネルギー・資源学会第33回エネルギーシステム・経済・環境コンファレンス
  • Place of Presentation: 砂防会館別館（東京都・千代田区）
  • Year and Date: 2017-02-02
• [Presentation] 多機能CO2ヒートポンプ給湯システムにおける性能日変化の推定 (2016)
  • Author(s): 前川純一, 横山良平, 涌井徹也
  • Organizer: エネルギー・資源学会第32回エネルギーシステム・経済・環境コンファレンス講演論文要旨集・講演論文集
  • Place of Presentation: 砂防会館別館，東京
  • Year and Date: 2016-02-02
• [Presentation] Optimal Operation of a CO2 Heat Pump Water Heating System (2015)
  • Author(s): R. Yokoyama
  • Organizer: 8th KIFEE International Symposium on Environment, Energy and Materials
  • Place of Presentation: Norwegian University of Science and Technology, Trondheim, Norway
  • Year and Date: 2015-09-20
  • Int'l Joint Research
• [Remarks] 大阪府立大学 エネルギーシステム工学研究室
  • URL: http://www.me.osakafu-u.ac.jp/esalab/
• [Remarks] http://www.me.osakafu-u.ac.jp/esalab/