The efficiency stabilization of CO2 two-phase flow ejector at the non-optimum expansion

Research Project

Project/Area Number	23860060
Research Category	Grant-in-Aid for Research Activity Start-up
Allocation Type	Single-year Grants
Research Field	Thermal engineering
Research Institution	Ishikawa National College of Technology
Principal Investigator	HARADA Atsushi 石川工業高等専門学校, 機械工学科, 助教 (40612023)
Project Period (FY)	2011 – 2012
Project Status	Completed (Fiscal Year 2012)
Budget Amount *help	¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000) Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000) Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords	冷凍空調 / 二相流 / ヒートポンプ / 冷凍サイクル / エジェクタ / 超音速流れ
Research Abstract	The flow phenomenon of the two-phase ejector is revealed by the experiment. It reduces the compression work and it increases the COP of the cycle.