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Heat Flux Estimation and the Control of Nucleate Boiling in a Laboratory Test Rig
Technical Paper
2005-01-2007
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The pending introduction of controlled coolant flowrates in modern automotive cooling systems presents the opportunity to exploit a heat transfer phenomenon known as Nucleate Boiling. By allowing this initial phase of boiling, reduced coolant flowrates are possible yielding a reduction in cooling system losses and pumping effort. This paper will elaborate work on a proposed technique for controlling coolant flowrates such that an enhanced heat transfer coefficient due to nucleate boiling is maintained. Three heat flux estimation techniques are proposed and evaluated on a specially built test rig under laboratory conditions. The results will discuss the advantages and disadvantages of each technique and its applicability in an automotive cooling system. The paper extends the work in a publication presented previously at the JSAE, 2004 in Japan
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Authors
Citation
Robertson, A., Hartland, J., and Gil-Martinez, A., "Heat Flux Estimation and the Control of Nucleate Boiling in a Laboratory Test Rig," SAE Technical Paper 2005-01-2007, 2005, https://doi.org/10.4271/2005-01-2007.Also In
References
- Eberth J.F. “Modelling and validation of automotive “smart” thermal management system architectures” SAE Paper No 2004-01-0048 , World Congress and Exhibition Detroit, Michigan 2004
- Hartland J. et al. “The Control of Nucleate Boiling in Automotive Cooling Applications” JSAE Paper number 20045472 JSAE Japan, Tokyo 2004
- Vagenas A. et al “On-vehicle controllable cooling jets” SAE Paper No 2004-01-0049 , World Congress and Exhibition Detroit, Michigan 2004
- Shih S. et al “Engine knock toughness improvement through water jacket optimization” SAE Paper No 2003-01-3259 , Powertrain and Fluid Systems Conference and Exhibition Pitsburg, Pennsylvania 2003
- Chalgren R D. Jr. “Thermal comfort and engine warm-up optimization of a low-flow advanced thermal management system” SAE Paper No 2004-01-0047 , World Congress and Exhibition Detroit, Michigan 2004