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Research Papers

Investigation of Hydrodynamics and Heat Transfer Effects Due to Light Guides in a Column Photobioreactor

[+] Author and Article Information
Caitlin R. Gerdes

Department of Mechanical Engineering,
South Dakota State University,
Crothers Engineering Hall 338,
Brookings, SD 57007
e-mail: Caitlin.Gerdes@jacks.sdstate.edu

Taylor N. Suess

ASME Member
Department of Mechanical Engineering,
South Dakota State University,
Crothers Engineering Hall 356,
Brookings, SD 57007
e-mail: Taylor.Suess@jacks.sdstate.edu

Gary A. Anderson

Department of Agricultural and
Biosystems Engineering,
South Dakota State University,
Agricultural Engineering Hall 115,
Brookings, SD 57007
e-mail: Gary.Anderson@sdstate.edu

Stephen P. Gent

ASME Member
Department of Mechanical Engineering,
South Dakota State University,
Crothers Engineering Hall 254,
Brookings, SD 57007
e-mail: Stephen.Gent@sdstate.edu

1Corresponding author.

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY. Manuscript received January 13, 2014; final manuscript received January 28, 2014; published online February 27, 2014. Editor: Nigel M. Sammes.

J. Fuel Cell Sci. Technol 11(4), 041002 (Feb 27, 2014) (7 pages) Paper No: FC-14-1008; doi: 10.1115/1.4026623 History: Received January 13, 2014; Revised January 28, 2014

The objective of this research is to predict how the placement of structural light guides within a column photobioreactor (PBR) affects the fluid mechanics and heat transfer of the system. The photobioreactor studied is modeled and analyzed using computational fluid dynamics (CFD). A bubble sparger provides carbon dioxide and mixing. Five different arrays and eight carbon dioxide volumetric flow rates are tested. Based on this setup, the bubble flow patterns, velocities, and temperature distributions are analyzed and the recommended placement of light guides is determined for predicting the growing conditions suitable for microalgae and other photosynthetic organisms.

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References

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Figures

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Fig. 1

Schematic of side and front views of PBR

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Fig. 2

Photobioreactor without light guides

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Fig. 3

Photobioreactor with 3 × 3 light guide array

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Fig. 4

(a) Front velocity streamlines and (b) side velocity streamlines of 3 × 3 array at 5 l/min

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Fig. 5

(a) Front temperature distribution and (b) side temperature distribution of 3 × 3 array at 5 l/min

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Fig. 6

Front temperature distributions at 10 l/min

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Fig. 7

Scalar particle velocity scenes of five different light guide arrays at 10 l/min

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