This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
One-Dimensional Modelling and Analysis of Thermal Barrier Coatings for Reduction of Cooling Loads in Military Vehicles
Technical Paper
2018-01-1112
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
There is a general interest in the reduction of cooling loads in military vehicles. To that end thermal barrier coatings (TBCs) are being studied for their potential as insulators, particularly for military engines. The effectiveness of TBCs is largely dependent on their thermal properties, however insulating effects can also be modified by applying different coating thickness. Convection from in-cylinder surfaces can also be affected by manipulation of surface structure. Although most prior studies have examined TBCs as a means of increasing efficiency, military vehicle design is primarily concerned with the reduction of cylinder heat transfer to allow downsizing of cooling systems. A 1-D transient conjugate heat transfer model was developed to provide insight into the effects of different TBC designs and material selection on cooling loads. Results identify low thermal conductivity and low thermal capacitance as key parameters in achieving optimal heat loss reduction. They also indicate a linear relationship between the reduction of cooling load and the thickness of the coating. It was found that heat loss could be further reduced by increasing the exhaust load rather than providing a benefit to thermal efficiency, by employing coatings of thickness exceeding 0.1 mm. This will accomplish the military design goal of reducing cooling load. Additionally it was found that, for sufficiently low k, increasing diffusivity (by decreasing thermal inertia) will decrease cooling load. This means alternatives to zirconia TBCs can achieve similar results despite not having such a low conductivity, provided they have a low enough density and specific heat. Overall however it appears that the best way to reduce cooling load is to minimize the convection coefficient h, which will similarly decrease the overall heat flux during the cycle.
Topic
Citation
Gatti, D. and Jansons, M., "One-Dimensional Modelling and Analysis of Thermal Barrier Coatings for Reduction of Cooling Loads in Military Vehicles," SAE Technical Paper 2018-01-1112, 2018, https://doi.org/10.4271/2018-01-1112.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 | ||
Unnamed Dataset 6 | ||
Unnamed Dataset 7 | ||
Unnamed Dataset 8 | ||
Unnamed Dataset 9 | ||
Unnamed Dataset 10 | ||
Unnamed Dataset 11 |
Also In
References
- Kamo , R. and Bryzik , W. 1981
- Bryzik , W. and Kamo , R. 1983
- Kamo , R. and Bryzik , W. 1979 Ceramics in Heat Engines
- Sivakumar , G. and Senthil Kumar , S. Investigation on Effect of Yttria Stabilized Zirconia Coated Piston Crown on Performance and Emission Characteristics of a Diesel Engine Alexandria Eng. J. 53 4 787 794 2014
- Bruns , L. , Bryzik , W. , and Kamo , R. 1989 Performance Assessment of US. Army Truck with Adiabatic Diesel Engine
- Wong , V.W. , Bauer , W. , Kamo , R. , Bryzik , W. et al. Assessment of Thin Thermal Barrier Coatings for I.C. Engines SAE Int. 950980 41 2 1 13 1995 https://doi.org/10.4271/950980
- Borman , G. and Nishiwaki , K. Internal-Combustion Engine Heat Transfer Prog. energy Combust. Sci. 13 1 1 46 1987
- Jia , M. , Gingrich , E. , Wang , H. , Li , Y. et al. Effect of Combustion Regime on in-Cylinder Heat Transfer in Internal Combustion Engines Int. J. Engine Res. 17 3 331 346 2016
- Dernotte , J. , Dec , J. E. , and Ji , C. 2017
- Wakisaka , Y. , Inayoshi , M. , Fukui , K. , Kosaka , H. et al. Reduction of Heat Loss and Improvement of Thermal Efficiency by Application of ‘Temperature Swing’ Insulation to Direct-Injection Diesel Engines SAE Int. J. Engines 9 3 1449 1459 2016 10.4271/2016-01-0661
- Kawaguchi , A. , Iguma , H. , Yamashita , H. , Takada , N. , et al. 2016
- Kosaka , H. , Wakisaka , Y. , Nomura , Y. , Hotta , Y. et al. Concept of ‘Temperature Swing Heat Insulation’ in Combustion Chamber Walls, and Appropriate Thermo-Physical Properties for Heat Insulation Coat SAE Int. J. Engines 6 1 142 149 2013 10.4271/2013-01-0274
- Zhou , C. , Wang , N. , Wang , Z. , Gong , S. et al. Thermal Cycling Life and Thermal Diffusivity of a Plasma-Sprayed Nanostructured Thermal Barrier Coating Scr. Mater. 51 10 945 948 2004
- Yilmaz , I.T. , Gumus , M. , and Akcay , M. Thermal Barrier Coatings for Diesel Engines International Scientific Conference 19 20 2010
- Cao , X.Q. , Vassen , R. , and Stoever , D. Ceramic Materials for Thermal Barrier Coatings J. Eur. Ceram. Soc. 24 1 1 10 2004
- Clarke , D.R. and Phillpot , S.R. Thermal Barrier Coating Materials Mater. Today 8 6 22 29 2005
- Binder , C. , Abou Nada , F. , Richter , M. , Cronhjort , A. et al. SAE Int. J. Engines 10 4 2017 10.4271/2017-01-1046
- Assanis , D. N. and Badillo , E. 1987
- Woschni , G. , Spindler , W. , and Kolesa , K. 1987
- Vassen , R. , Cao , X. , Tietz , F. , Basu , D. et al. Zirconates as New Materials for Thermal Barrier Coatings J. Am. Ceram. Soc. 83 8 2023 2028 2004
- Saad , D. , Saad , P. , Kamo , L. , Mekari , M. et al. Thermal Barrier Coatings for High Output Turbocharged Diesel Engine SAE Technical Paper 2007-01-1442 2007 10.4271/2007-01-1442
- Steffens , H.-D. , Babiak , Z. , and Gramlich , M. Some Aspects of Thick Thermal Barrier Coating Lifetime Prolongation J. Therm. Spray Technol. 8 4 517 522 1999
- Ferguson , C.R. and Kirkpatrick , A. Internal Combustion Engines: Applied Thermosciences New York John Wiley & Sons 2001
- Skeen , S. , Manin , J. , Pickett , L. , Dalen , K. et al. Quantitative Spatially Resolved Measurements of Total Radiation in High-Pressure Spray Flames SAE Technical Paper 2014-01-1252 SAE International 2014 https://doi.org/10.4271/2014-01-1252
- Benajes , J. , Martin , J. , Garcia , A. , Villalta , D. et al. An Investigation of Radiation Heat Transfer in a Light-Duty Diesel Engine SAE Int. J. Engines 8 2199 2212 2015
- Yoshikawa , T. and Reitz , R. Effect of Radiation on Diesel Engine Combustion and Heat Transfer J. Therm. Sci. Technol 4 86 97 2009
- Benajes , J. , Martín , J. , García , A. , Villalta , D. et al. In-Cylinder Soot Radiation Heat Transfer in Direct-Injection Diesel Engines Energy Convers. Manag. 106 Supplement C 414 427 2015
- Woschni , G. A Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine SAE Int. 19 1967 https://doi.org/10.4271/670931
- Baker , D.M. and Assanis , D.N. A Methodology for Coupled Thermodynamic and Heat Transfer Analysis of a Diesel Engine Appl. Math. Model. 18 11 590 601 1994
- Hayes , T. K. , White , R. A. , and Peters , J. E. 1993
- Kosaka , H. , Wakisaka , Y. , Nomura , Y. , Hotta , Y. et al. Concept of ‘Temperature Swing Heat Insulation’ in Combustion Chamber Walls, and Appropriate Thermo-Physical Properties for Heat Insulation Coat SAE Int. J. Engines 6 1 2013 10.4271/2013-01-0274
- Gosai , D.C. and Nagarsheth , H.J. 2016 Diesel Engine Cycle Analysis of Two Different TBC Combustion Chamber Procedia Technol
- Chana , K. , Wilson , T. , and Bryanston-Cross , P. 2003 69 7 11
- Caton , J.A. An Introduction to Thermodynamic Cycle Simulations for Internal Combustion Engines Wiley 2015