ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
Journal of Enhanced Heat Transfer
インパクトファクター: 0.562 5年インパクトファクター: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN 印刷: 1065-5131
ISSN オンライン: 1026-5511

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v8.i4.20
pages 231-241

Thermochemical Protection of High Temperature Materials

J. Stricker
Faculty of Aerospace Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
Y. Goldman
Faculty of Aerospace Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
Genady Borodyanski
Israel Institute of Technology
heat engineering

要約

An experimental investigation of cooling and heat protection of high temperature objects, by a method based on endothermic chemical reactions is presented. The coolant is CH4 which reacts endothermally with CO2 and H2O. CO2 and H2O are supplied as hot products by hydrocarbon fuel combustion and are also used for heating the tested objects. The method is demonstrated by cooling a hollow tube, and gas turbine blades. Significant wall temperature reduction, of ΔT ≅ 300 K as compared to ΔT = 150 K with inert nitrogen cooling, was obtained for wall temperature of Tw = 1050 K. It was found that at lower temperatures the cooling effectiveness decreases due to the slow rate of the chemical reactions. At higher temperatures the cooling rate remains constant due to diffusion limitations. Moire deflectometry has been used for visualization and qualitative study of the density field around the cooled objects. The cooling method is limited to fuel rich combustion mixtures.


Articles with similar content:

Nitrogen removal from liquid steel during plasma arc heating by injecting methane into the argon arc
Progress in Plasma Processing of Materials, 2001, Vol.0, 2001, issue
Dieter Neuschutz, D. Spirine
USE OF SOLID OXIDIZER FOR IMPROVING THE STARTING CAPABILITY OF TURBINE ENGINES
International Journal of Energetic Materials and Chemical Propulsion, Vol.8, 2009, issue 5
Arie Peretz, Amichay H. Gross, Savely Khosid
CLEAN LIQUID AND HYBRID GAS GENERATOR SYSTEM FOR INFLATING CAR AIRBAGS
International Journal of Energetic Materials and Chemical Propulsion, Vol.4, 1997, issue 1-6
Takeo S. Saitoh, Akira Iwama, Junichi Kishimoto
PRESSURE DISTRIBUTION MEASUREMENTS FOR CO2 FOAM FLOW IN POROUS MEDIA
Journal of Porous Media, Vol.18, 2015, issue 11
Shengbin Sun, Dongxing Du, Weifeng Lv, Na Zhang, Yingge Li, Dexi Wang
Measurement of Temperature Distribution for the Hydrate Formation and Dissociation in Porous Media
International Heat Transfer Conference 15, Vol.55, 2014, issue
Shenglong Wang, Yongchen Song, Yuechao Zhao, Jiafei Zhao, Lanlan Jiang, Mingjun Yang