Experimental investigation of condensation heat transfer on vertically inclined grooved aluminium surfaces
![Thumbnail](/themes/edepositireland/images/white_rectangle.jpeg)
File Type:
PDFItem Type:
Journal ArticleDate:
2024Author:
Access:
openAccessCitation:
Shatskiy, E., Kumavat, P.S., O'Shaughnessy, S.M., Experimental investigation of condensation heat transfer on vertically inclined grooved aluminium surfaces, Journal of Physics: Conference Series, 2766, 1, 2024Download Item:
Abstract:
This study details the experimental investigation of surface condensation heat transfer
on vertically inclined aluminium surfaces with simple modifications. A bespoke experimental
apparatus was constructed to control the saturation conditions inside the condensation chamber
where the test surface is located. The degree of subcooling of the test surface was precisely
controlled by an external heat exchanger. The meter bar technique was used to evaluate the
condensation heat flux. Using distilled water as the working fluid and a plane aluminium test
surface as the baseline case, the experimental apparatus was validated by comparison of the
determined heat transfer coefficient with Nusselt’s model of filmwise condensation on a vertical
plane surface, where an excellent agreement was obtained. 7 different aluminium test surfaces
were subsequently investigated, each one modified with grooves measuring 0.5mm by 0.5mm
(height and width), with a consistent spacing of 0.5mm between them. Groove angles relative to
the vertical axis of 0° (180°), 30°, 45°, 60°, 90°, 120°, and 150° were investigated, where grooves
were symmetrically mirrored at the centre of each test surface. Results highlighted a significant
influence of groove angle on the heat transfer coefficient, with the best-performing sample (150˚)
producing a maximum enhancement of 45% and an average enhancement of 34% compared to
the baseline test surface over the respective range of subcooling.
Author's Homepage:
http://people.tcd.ie/oshaugseDescription:
PUBLISHED
Author: O'Shaughnessy, Seamus
Type of material:
Journal ArticleSeries/Report no:
Journal of Physics: Conference Series2766
1
Availability:
Full text availableDOI:
http://dx.doi.org/10.1088/1742-6596/2766/1/012155Metadata
Show full item recordLicences: