High-pressure homogenizer valve design modifications allowing intensified drop breakup without increasing power consumption. I. Optimization of current design-principle
(2024) In Chemical Engineering and Processing - Process Intensification 196.- Abstract
This study uses a model-based design approach (CFD coupled to well-established emulsification correlations) to investigate how to choose the valve dimensions of a high-pressure homogenizer so as to achieve intensified drop breakup without increasing the power consumption. Results show how design modifications influence the thermodynamic efficiency of the homogenizer via two effects, a friction factor and a factor related to how high a dissipation rate of turbulent kinetic energy that the design delivers in the centre of the jet. By simple design modifications, thermodynamic efficiency can be increased by 4 % (compared to a representative contemporary valve design) by decreasing the inlet chamber angle, and an additional 5 % by carefully... (More)
This study uses a model-based design approach (CFD coupled to well-established emulsification correlations) to investigate how to choose the valve dimensions of a high-pressure homogenizer so as to achieve intensified drop breakup without increasing the power consumption. Results show how design modifications influence the thermodynamic efficiency of the homogenizer via two effects, a friction factor and a factor related to how high a dissipation rate of turbulent kinetic energy that the design delivers in the centre of the jet. By simple design modifications, thermodynamic efficiency can be increased by 4 % (compared to a representative contemporary valve design) by decreasing the inlet chamber angle, and an additional 5 % by carefully adjusting the outlet chamber angles so as to ensure that the jet exits the gap free of the wall, but then bends and re-attaches to the wall further downstream. The modifications are predicted to allow for achieving the same resulting drop size but with a 17 % lower power draw, compared to a standard contemporary valve, or alternatively a smaller resulting drop diameter at constant power draw.
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- author
- Håkansson, Andreas LU
- organization
- publishing date
- 2024-02
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- CFD, Design optimization, Emulsification, High-pressure homogenization, Model-based design
- in
- Chemical Engineering and Processing - Process Intensification
- volume
- 196
- article number
- 109659
- publisher
- Elsevier
- external identifiers
-
- scopus:85181974141
- ISSN
- 0255-2701
- DOI
- 10.1016/j.cep.2023.109659
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: This work was funded by the Swedish Research Foundation (VR), grant number 2018–03820. Publisher Copyright: © 2023
- id
- db073c5e-01fe-4ad4-9fd6-13876293ffc7
- date added to LUP
- 2024-01-16 09:46:31
- date last changed
- 2024-01-16 13:00:32
@article{db073c5e-01fe-4ad4-9fd6-13876293ffc7,
abstract = {{<p>This study uses a model-based design approach (CFD coupled to well-established emulsification correlations) to investigate how to choose the valve dimensions of a high-pressure homogenizer so as to achieve intensified drop breakup without increasing the power consumption. Results show how design modifications influence the thermodynamic efficiency of the homogenizer via two effects, a friction factor and a factor related to how high a dissipation rate of turbulent kinetic energy that the design delivers in the centre of the jet. By simple design modifications, thermodynamic efficiency can be increased by 4 % (compared to a representative contemporary valve design) by decreasing the inlet chamber angle, and an additional 5 % by carefully adjusting the outlet chamber angles so as to ensure that the jet exits the gap free of the wall, but then bends and re-attaches to the wall further downstream. The modifications are predicted to allow for achieving the same resulting drop size but with a 17 % lower power draw, compared to a standard contemporary valve, or alternatively a smaller resulting drop diameter at constant power draw.</p>}},
author = {{Håkansson, Andreas}},
issn = {{0255-2701}},
keywords = {{CFD; Design optimization; Emulsification; High-pressure homogenization; Model-based design}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Chemical Engineering and Processing - Process Intensification}},
title = {{High-pressure homogenizer valve design modifications allowing intensified drop breakup without increasing power consumption. I. Optimization of current design-principle}},
url = {{http://dx.doi.org/10.1016/j.cep.2023.109659}},
doi = {{10.1016/j.cep.2023.109659}},
volume = {{196}},
year = {{2024}},
}