NDLI: Experimental and Numerical Study of Evaporating Flow Heat Transfer in Micro-Channel

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Lee, Hoki Richards, C. D. Richards, R. F.
Copyright Year	2007
Abstract	Experimental and numerical results are presented for steady evaporating flow heat transfer from open top square micro-channels. Radial channels, 40 microns high, and 35, 50 and 70 microns wide with 5 micron wide SU-8 walls are considered. The channels are filled with Fluorinert FC77 working fluid pumped by capillary forces from a reservoir at the outer circumference of the radial channels. An energy balance on the radial channels including heat into the channels, conduction heat transfer radially along the channels and latent heat transfer via evaporation of the working fluid from the channels is experimentally determined. Microphotography is used to visualize the working fluid and the meniscus contact angles in the channels. A three-dimensional finite difference time-domain integration is used to predict sensible heat transfer rates and latent heat transfer/ evaporation rates. Experimental measurements are compared to the numerical results to extract estimates of the liquid thickness in the channels.
Starting Page	447
Ending Page	454
Page Count	8
File Format	PDF
ISBN	079184305X
DOI	10.1115/IMECE2007-42576
e-ISBN	0791838129
Volume Number	Volume 11: Micro and Nano Systems, Parts A and B
Conference Proceedings	ASME 2007 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2007-11-11
Publisher Place	Seattle, Washington, USA
Access Restriction	Subscribed
Subject Keyword	Energy budget (physics) Heat conduction Latent heat Fluids Heat Reservoirs Evaporation Flow (dynamics) Heat transfer Microchannels Microphotography
Content Type	Text
Resource Type	Article

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