Assessment of radiative heat transfer impact on a temperature distribution inside a real industrial swirled furnace

Scientific paper - Original scientific paper

• Author: Filip Jurić
• Author: Milan Vujanović
• Author: Marija Živić
• Author: Mario Holik
• Author: Xuebin Wang
• Author: Neven Duić
• Collaboration: MRRFEU-KK.01.1.1.04.0070
• Author's institution: University of Slavonski Brod; (Mechanical Engineering Faculty in Slavonski Brod); (Department of Energetics)
• Author's institution: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; (Department of Energy, Power and Environmental Engineering); (Power Engineering and Energy Management Chair)
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Process Energy Engineering

Abstract (english)

Combustion systems will continue to share a portion in energy sectors along the cur-rent energy transition, and therefore the attention is still given to the further improvements of their energy efficiency. Modern research and development processes of combustion systems are improbable without the usage of predictive numerical tools such as CFD. The radiative heat transfer in participating media is modelled in this work with discrete transfer radiative method (DTRM) and discrete ordinates method (DOM) by finite volume discretisation, in order to predict heat transfer inside combustion chamber accurately. The DTRM trace the rays in different directions from each face of the generated mesh. At the same time, DOM is described with the angle discretisation, where for each spatial angle the radiative transport equation needs to be solved. In combination with the steady combustion model in AVL FIRE™ CFD code, both models are applied for computation of temperature distribution in a real oil-fired industrial furnace for which the experimental results are available. For calculation of the absorption coefficient in both models weighted sum of grey gasses model is used. The focus of this work is to estimate radiative heat transfer with DTRM and DOM models and to validate obtained results against experimental data and calculations without radiative heat transfer, where approximately 25% higher temperatures are achieved. The validation results showed good agreement with the experimental data with a better prediction of the DOM model in the temperature trend near the furnace outlet. Both radiation modelling approaches show capability for the computation of radiative heat transfer in participating media on a complex validation case of the combustion process in oil-fired furnace.

• Keywords (english): radiative heat transfer; participating media; furnace; radiative absorption; combustion
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Thermal Science
• Numbering: vol. 26, no. 6, pp. 3663-3672, TSCI200407285J
• BPC: 180 EUR
• p-ISSN: 0354-9836
• e-ISSN: 2334-7163
• DOI: https://doi.org/10.2298/TSCI200407285J
• URN:NBN: urn:nbn:hr:235:932502
• Publication: 2020
• Project: Number: KK.01.1.1.04.0070; Title (croatian): Razvoj sustava za ispitivanje višefaznih strujanja i izgaranja s ciljem povećanja istraživačkih aktivnosti znanstvenog i poslovnog sektora; Acronym: RESIN; Leader: Milan Vujanović; Jurisdiction: eu; Funding stream: European Regional Development Fund
• Document URL: https://thermalscience.vinca.rs/2020/6/24
• Type of resource: Text
• Access conditions: Open access
• Created on: 2024-05-22 14:18:41