Freon Free Carbon Dioxide Ejector Refrigeration Cycle Using Suction Force by Two-phase Expansion Waves
Project/Area Number |
21560210
|
Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Thermal engineering
|
Research Institution | Toyohashi University of Technology |
Principal Investigator |
NAKAGAWA Masafumi 豊橋技術科学大学, 大学院・工学研究科, 准教授 (50135414)
|
Project Period (FY) |
2009 – 2011
|
Project Status |
Completed (Fiscal Year 2011)
|
Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
Keywords | 冷凍 / 空調,二相流 / 冷凍サイクル / 炭酸ガス / エジェクタ / 二相流 / 膨張波 / 超音速 / 衝撃波 / 成績係数 |
Research Abstract |
A long term solution for global warming is now inevitable to mitigate the dilemma of climate change. Two of the most effective solutions are to increase the efficiency of a system or device and to use natural working fluids. An ejector can improve the performance of a CO2 refrigeration system by recovering the energy lost during expansion. The theoretical studies for two-phase expansion wave at the outlet of the driving nozzle are carried out. It is shown that the disk shock wave appears just after the expansion waves. The experiments which elucidate the effect of the length and the flow area of the mixing section are also carried.
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Report
(4 results)
Research Products
(40 results)