Preliminary experimental studies into the flow of juice in roller groove conduits

Kauppila, D.J., Kent, G., and Loughran, J.G. (2003) Preliminary experimental studies into the flow of juice in roller groove conduits. In: Proceedings of the 25th Conference of the Australian Society of Sugar Cane Technologists (2003) pp. 1-9. From: 25th Annual Conference Australian Society of Sugar Cane Technologists, 6-9 May 2003, Townsville, QLD, Australia.

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It is generally accepted that bagasse does not fully penetrate to the bottom of most roller grooving. Many researchers have postulated the existence of a significant forward flow of expressed juice from the feed side of a nip to the delivery side where the fluid has the potential to be reabsorbed by the expanding bagasse mat. If this is the case, then these conduit flows are responsible for considerable inefficiencies in the crushing process. Given a more thorough understanding of the mechanics of fluid flow in roller groove conduits, the effectiveness of proposed peripheral groove flow inhibition concepts, currently being studied by James Cook University and Sugar Research Institute investigators, could be assessed. This paper documents a preliminary experimental investigation into the flow characteristics of roller groove conduits. A Perspex groove was fabricated and a wire basket was used to support a compacted cane sample above the root of the groove, thus forming an irregular shaped conduit, similar to that observed at the root of roller grooves. The experiment examined the flow rate response to varying the conduit length, conduit depth, and inlet pressure. The results show that the conduit flow generally follows the well-established pipe flow theory but with friction factors well in excess of those in the literature. The friction factor was shown to be a function of Reynolds number and an empirical equation was developed to estimate it.

Item ID: 14724
Item Type: Conference Item (Research - E1)
ISSN: 0726-0822
Date Deposited: 12 Sep 2017 04:18
FoR Codes: 09 ENGINEERING > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified @ 100%
SEO Codes: 86 MANUFACTURING > 8601 Processed Food Products and Beverages (excl. Dairy Products) > 860199 Processed Food Products and Beverages (excl. Dairy Products) not elsewhere classified @ 100%
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