Methodology To Obtain Homogeneous Temperature Distribution Across A Revers Flow Offset Barbecue

Tait, Matthew (2019) Methodology To Obtain Homogeneous Temperature Distribution Across A Revers Flow Offset Barbecue. [USQ Project]


Abstract

The research project being undertaken involves the development of methodology to obtain homogeneous temperature distribution throughout the cooking chamber of a reverse flow offset barbecue. Initial testing was carried out using thermocouples to quantitatively measure temperature at four locations inside the cooking chamber and mass flow rate through the Smoke Commander barbecue. At present a temperature distribution issue exists, resulting in one particular zone experiencing average temperatures 20.9°Clower than the area directly above it and 18.0°C lower than the zone further along the flow path. An infrared camera has proven effective to visually highlight the temperature distribution issue on the exterior surface. Simulation using ANSYS Fluent was carried out to model the temperature distribution inside the barbecue and trial any modifications before they were carried out in practice.

A number of scenarios were investigated during the ANSYS simulation phase. The cold area could be identified on the initial model, identifying a location to cut slots and allow combustion gases earlier entry into the combustion chamber.

Another concept design was investigated using a funnel shaped inlet and round corners tangential to the flow path. This resulted with the same issue identified in the original design to a much lesser extent without any holes cut in the diverter plate.

Three modifications found to have the desired effect on temperature distribution were carried out in practice and the temperature distribution was mapped using thermocouples. These proved effective with one design showing a quantitative reduction in temperature differential in the identified zone of interest by 88% and globally by 66.7%. All future models will now have this improvement as a standard feature.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Engineering (Honours)(Mechanical)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 -)
Supervisors: Saleh, Khalid
Date Deposited: 23 Aug 2021 01:42
Last Modified: 23 Aug 2021 01:42
URI: http://eprints.usq.edu.au/id/eprint/43156

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