2012 Fiscal Year Final Research Report
Study on intercoolers and recuperators for aviation engine using super critical CO2
| Project/Area Number |
22760622
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Aerospace engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
ITO Yu 東京工業大学, 大学院・総合理工学研究科, 助教 (10323817)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 推進 / エンジン |
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| Research Abstract |
In order to reduce carbon dioxide emission from aviation, the research representative proposed a new intercooled and recuperated aviation gas-turbine engine, or a new IR engine, that utilizes compressor stators as heat exchanger. For moreaccurate cycle calculation of a new IR engine, experiments were conducted to estimate heattransfer performance. For simulating a compressor in a practical jet engine, 1: a hot air flow at Mach number of 0.6 are prepared by a closed return wind tunnel, 2: a cascade of three NACA65-(12A2I8b)10 airfoils are prepared as compressor stators, 3: carbon dioxide or water as a cold refrigerant at high pressure of 30MPa maximum are prepared in a closed loop with a recirculation pump and with a cooling section. Using this facility at angle-of-attack in a range of 0o to 25.5o, proportionality factors are obtained different from conventional empirical one. For heat transfer between hot air and airfoil, proportionality factor of 0.033 is obtained in water refrigerant case and 0.057 is obtained in carbon dioxide refrigerant case instead of 0.023 in Dittus-Boelter correlation. For heat transfer between airfoil and cold refrigerant, proportionality factor of 0.034 is obtained in water refrigerant case and 0.024 is obtained in carbon dioxide refrigerant case instead of 0.037 in the Colburn analogy.
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