Validation of Turbulence/Chemistry Interaction Models for use in Oxygen Enhanced Combustion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F17%3APU143850" target="_blank" >RIV/00216305:26210/17:PU143850 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1876610217327741" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1876610217327741</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.egypro.2017.07.204" target="_blank" >10.1016/j.egypro.2017.07.204</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Validation of Turbulence/Chemistry Interaction Models for use in Oxygen Enhanced Combustion

Popis výsledku v původním jazyce

In conventional air-fired combustion systems a huge amount of the heat of formation is absorbed by nitrogen. Oxygen enhanced combustion (OEC) systems uses an O-2/N-2 mixture with a higher concentration of oxygen than in the ambient air. As a consequence, higher flame temperatures as well as an improved radiative heat transfer in the furnace can be determined when OEC is used. Therefore, OEC is an option to increase the furnace efficiency especially in energy demanding high temperature processes like metal, glass or cement industries. The investigated furnace is cylindrical shaped with 1 m in diameter and a length of 4 m. It was tested for air-fuel combustion and several OEC test cases. A two-staged natural gas burner was arranged at the front surface. The burner allows three different methods to supply the O-2/N-2 mixture (premixed, air/oxy-fuel, oxygen lancing). Furthermore, the furnace was surrounded by a water cooled shell where the measurement of the total heat flux to the furnace wall was performed. Additionally, in-flame temperatures were determined at several radial and axial distances. Measured results were used to validate the CFD simulations carried out with the eddy dissipation (EDM), eddy dissipation concept (EDC) and steady flamelet model (SFM).

Název v anglickém jazyce

Validation of Turbulence/Chemistry Interaction Models for use in Oxygen Enhanced Combustion

Popis výsledku anglicky

In conventional air-fired combustion systems a huge amount of the heat of formation is absorbed by nitrogen. Oxygen enhanced combustion (OEC) systems uses an O-2/N-2 mixture with a higher concentration of oxygen than in the ambient air. As a consequence, higher flame temperatures as well as an improved radiative heat transfer in the furnace can be determined when OEC is used. Therefore, OEC is an option to increase the furnace efficiency especially in energy demanding high temperature processes like metal, glass or cement industries. The investigated furnace is cylindrical shaped with 1 m in diameter and a length of 4 m. It was tested for air-fuel combustion and several OEC test cases. A two-staged natural gas burner was arranged at the front surface. The burner allows three different methods to supply the O-2/N-2 mixture (premixed, air/oxy-fuel, oxygen lancing). Furthermore, the furnace was surrounded by a water cooled shell where the measurement of the total heat flux to the furnace wall was performed. Additionally, in-flame temperatures were determined at several radial and axial distances. Measured results were used to validate the CFD simulations carried out with the eddy dissipation (EDM), eddy dissipation concept (EDC) and steady flamelet model (SFM).

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/TE02000236" target="_blank" >TE02000236: Centrum kompetence pro energetické využití odpadů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Energy Procedia

ISBN

—

ISSN

1876-6102

e-ISSN

—

Počet stran výsledku

8

Strana od-do

548-555

Název nakladatele

Neuveden

Místo vydání

neuveden

Místo konání akce

Albufeira, Portugal

Datum konání akce

18. 4. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000419171200065