NDLI: Flow boiling enhancement on a horizontal heater using carbon nanotube coatings

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Flow boiling enhancement on a horizontal heater using carbon nanotube coatings

Content Provider	Semantic Scholar
Author	Singh, Nirmal Banerjee, Debjyoti
Copyright Year	2010
Abstract	In this study we measure the flow boiling heat flux on a horizontal heater that is heated from below. The horizontal heater consists of either a bare silicon wafer or a silicon wafer that is coated with multi walled carbon nanotubes (MWCNT). The silicon wafer is clamped on a constant heat flux type calorimeter consisting of a vertical copper cylinder with embedded cartridge heaters and K-type thermocouples. De-ionized (DI) water was used as the test fluid. The calorimeter apparatus is housed in a test section with glass walls for visual observation. The liquid is pumped from a constant temperature bath to maintain a fixed subcooling during the experiments under steady state conditions. Boiling curves (wall heat flux as a function of heater temperature) were obtained for different flow rates and liquid subcooling. Experiments were performed for two different flow rates and two different liquid subcoolings. Flow boiling heat flux was enhanced by as much as 180% at boiling incipience for silicon substrates coated with carbon nanotubes. MWCNT was less effective in enhancing heat flux as the flow rate and liquid subcooling was increased. This anomalous behavior was explained using flow boiling models reported in the literature. 2009 Elsevier Inc. All rights reserved.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://db.tamu.edu/publications/journal/NSVSDB_IJHFF_31_201-207_2010.pdf
Language	English
Access Restriction	Open
Subject Keyword	Cardiovascular Diseases Chemical vapor deposition Cylinder seal Embedded system Embedding Experiment Flux Flux qubit GNU nano Heater Device Component Liquid-crystal display Nanotubes Nanotubes, Carbon Numerous Onset (audio) Oral Wafer Silicon Steady state Vacuum deposition Wafer (electronics) Walls of a building pump (device)
Content Type	Text
Resource Type	Article

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