This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Heat Transfer Calculations for Cooling System Performance Prediction and Experimental Validation
Technical Paper
2011-26-0087
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SIAT 2011
Language:
English
Abstract
The two major areas of engine development, the automobile industry is concentrating and putting its major product development efforts on are emission control and improved fuel efficiency. These developments either directly or indirectly impact the cooling system requirements significantly. A small change in cooling system requires the vehicle to undergo cooling tests before commercial release to make sure it performs as per requirements. Normally, on an average, 4-5 trials are conducted before clearing the vehicle for production. This involves a lot of time, efforts and resources.
The objective of this study is to develop a methodology to predict the cooling system performance analytically and validate the results with experimental data. This study will help in reducing the number of trials thereby saving cost, time and efforts involved. Basic components of cooling system include radiator, charge air cooler and fan. The most important parameters used to validate the analytical results are the Limiting Ambient Temperature (LAT) and charge air cooler outlet temperature. LAT is the maximum ambient temperature at which the vehicle cooling system can work without failure.
The Steady-state analytical calculations have been performed for engine cooling system (Radiator - Charge Air Cooler (CAC) - Fan) combinations using lumped parameter approach and the methodology is validated experimentally. The deviation between the proposed analytical method and test is reasonable. FAN laws are used to evaluate fan performance for different speeds of engine.
Recommended Content
Authors
Citation
Umekar, M. and Govindaraj, D., "Heat Transfer Calculations for Cooling System Performance Prediction and Experimental Validation," SAE Technical Paper 2011-26-0087, 2011, https://doi.org/10.4271/2011-26-0087.Also In
References
- Changa, Yu-Juei Hsub, Kuei-Chang Linb, Yur-Tsai Wanga, Chi-Chuan “A Generalized Friction Correlation For Louver Fin Geometry” International Journal of Heat and Mass Transfer 43 2237 2243 2000
- Incropera, F P De Witt, D P “Fundamentals of Heat and Mass Transfer” 3rd John Wiley and Sons New York 1990
- Jung, Dohoy Assanis, Dennis N “Numerical Modeling of Cross Flow Compact Heat Exchanger with Louvered Fins using Thermal Resistance Concept” SAE Paper No. 2006-01-0726 2006
- Tsai, B J Wu, C L “Investigation of a Miniature Centrifugal Fan” Applied Thermal Engineering 27 229 239 2007
- Stein, Jeff Hydeman, Mark M “Development and Testing of the Characteristic Curve Fan Model” AN-04-3-1/ 347-356, ASHRAE 2004
- Stinnes, W H Von Backstrom, T W “Effect of Cross-Flow on the Performance of Air-cooled Heat Exchanger Fans” Applied Thermal Engineering 22 1403 1415 2002
- Li, Hongmin “Flow Driven by a Stamped Metal Cooling Fan - Numerical Model and Validation” Experimental Thermal and Fluid Science 33 683 694 2009
- Liu, Szu Hsien Huang, Rong Fung Lin, Chuang An “Computational and Experimental Investigation of Performance Curve of an Axial Flow Fan Using Downstream Flow Resistance Method” Experimental Thermal and Fluid Science 34 827 837 2010
- Gilies, Philip T “Investigating the Use of Alluvial Fan Volume to Represent Fan Size in Morphometric Studies” Geomorphology 121 317 328 2010
- Yan, Wei-Mon Sheen, Pay-Jen “Heat Transfer and Friction Characteristic of Fin-and-Tube Heat Exchangers” International Journal of Heat and Mass Transfer 43 1651 1659 2000
- El-Hawat, S M Heikal, M R Sazhin, S S “An Improved Three-Dimensional Numerical Model of Flow and Heat Transfer Over Louvered Fin Arrays” International Journal of Heat Exchangers 1524-5608/ II 3 10 2001