NDLI: Model Based Predictive Control of Nucleate Boiling

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Robertson, Andrew Hartland, Jonathan
Copyright Year	2005
Abstract	Conventional, liquid phase, forced-convection cooling systems enjoy elevated levels of heat transfer when operated in the Nucleate Boiling regime. Under such conditions, coolant flow rates can be greatly reduced leading to a significant reduction in pumping effort, a downsized cooling system and a subsequent increase in operational lifetime. In order to control heat transfer reliably, a closed-loop control system is necessary which requires a measurement or estimation of the instantaneous heat transfer coefficient. This work presents a control technique for Nucleate Boiling focused on automotive applications and based around a specially built laboratory test rig. The control system calculates the necessary coolant flow rate from an estimated heat flux. The simplicity of the control system is complemented by the complexity of estimating the instantaneous heat flux. Three techniques for estimating this heat flux are presented relying on measured system variables. Results for the third and most practical, technique are presented taken from the laboratory test rig.
Sponsorship	Heat Transfer Division and Electronic and Photonic Packaging Division
Starting Page	27
Ending Page	31
Page Count	5
File Format	PDF
ISBN	0791847322
DOI	10.1115/HT2005-72150
e-ISBN	0791837629
Volume Number	Heat Transfer: Volume 2
Conference Proceedings	ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems
Language	English
Publisher Date	2005-07-17
Publisher Place	San Francisco, California, USA
Access Restriction	Subscribed
Subject Keyword	Forced convection Automotive industry Nucleate boiling Control systems Coolants Cooling systems Flow (dynamics) Heat transfer coefficients Heat flux Heat transfer Predictive control
Content Type	Text
Resource Type	Article

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