Investigating the hydrodynamic performance of carbonation sumps in High Rate Algal Pond (HRAP)raceways using computational fluid dynamics (CFD)
Investigating the hydrodynamic performance of carbonation sumps in High Rate Algal Pond (HRAP)raceways using computational fluid dynamics (CFD)
The production of microalgae requires carbonation and deoxygenation which is commonly supplied through a sump. This needs to be designed to minimise the energy loss to ensure a high net energy gain from the biofuel. Computational fluid dynamics was used to evaluate different sump designs and flow velocities in terms of energy loss and flow distribution to find the optimum configuration. It was established that increasing the radius of curvature of the corners to 0.1 m and the implantation of one flow deflector resulted in a reduction in hydraulic power of 73% compared to the basic setup. It was apparent that the central baffle resulted in considerable energy loss and when this was removed then a power saving of 95% was possible. There was, however, a much reduced flow around the sump leading to shortened contact time between the gas and fluid which could in turn decrease the carbonation of the fluid. It was also apparent that the use of standard formulas for the calculation of head loss was not applicable
723-739
Musgrove, Edward
3a3d6649-d0cf-490d-8dab-9d1ff4a181b7
Heaven, Sonia
f25f74b6-97bd-4a18-b33b-a63084718571
7 April 2015
Musgrove, Edward
3a3d6649-d0cf-490d-8dab-9d1ff4a181b7
Heaven, Sonia
f25f74b6-97bd-4a18-b33b-a63084718571
Musgrove, Edward and Heaven, Sonia
(2015)
Investigating the hydrodynamic performance of carbonation sumps in High Rate Algal Pond (HRAP)raceways using computational fluid dynamics (CFD).
Biofuels, 5 (6), .
(doi:10.1080/17597269.2015.1024387).
Abstract
The production of microalgae requires carbonation and deoxygenation which is commonly supplied through a sump. This needs to be designed to minimise the energy loss to ensure a high net energy gain from the biofuel. Computational fluid dynamics was used to evaluate different sump designs and flow velocities in terms of energy loss and flow distribution to find the optimum configuration. It was established that increasing the radius of curvature of the corners to 0.1 m and the implantation of one flow deflector resulted in a reduction in hydraulic power of 73% compared to the basic setup. It was apparent that the central baffle resulted in considerable energy loss and when this was removed then a power saving of 95% was possible. There was, however, a much reduced flow around the sump leading to shortened contact time between the gas and fluid which could in turn decrease the carbonation of the fluid. It was also apparent that the use of standard formulas for the calculation of head loss was not applicable
Text
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Published date: 7 April 2015
Organisations:
Water & Environmental Engineering Group
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Local EPrints ID: 383318
URI: http://eprints.soton.ac.uk/id/eprint/383318
ISSN: 1759-7269
PURE UUID: 1fd2714d-5bf6-439d-9fa8-c16b2857b453
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Date deposited: 12 Nov 2015 10:21
Last modified: 15 Mar 2024 02:47
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Author:
Edward Musgrove
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