SENSITIVITY OF THE HEAT TRANSFER COEFFICIENT IN A BUBBLING FLUIDIZED BED TO MEAN PARTICLE DIAMETER

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F16%3A00307517" target="_blank" >RIV/68407700:21220/16:00307517 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

SENSITIVITY OF THE HEAT TRANSFER COEFFICIENT IN A BUBBLING FLUIDIZED BED TO MEAN PARTICLE DIAMETER

Popis výsledku v původním jazyce

Combustion of conventional solid fuels, such as coal, in bubbling fluidized bed boilers offers potential for application in carbon capture and storage technologies. It is possible to employ the technology for cases of oxy-fuel combustion or in calcium looping. For oxy-fuel combustion is also possible to utilize biomass resulting in negative carbon dioxide emissions. For proper design fluidized bed devices is necessary to have a good knowledge about characteristics of inert material. This work focuses on heat transfer between fluidized bed and immersed surface. Respectively, the paper compares influence of mean diameter on heat transfer under conditions of oxy-fuel atmosphere. Selected correlations, available from open literature, are evaluated for three different mean diameters obtained by evaluation of sieve analysis. Mean diameter has a number of definitions giving different results for same sample. For evaluation of sieve analysis were used Sauter mean diameter, median and modus. The calculations were performed under operating conditions near to those of commercial conventional bubbling fluidized bed boilers.

Název v anglickém jazyce

SENSITIVITY OF THE HEAT TRANSFER COEFFICIENT IN A BUBBLING FLUIDIZED BED TO MEAN PARTICLE DIAMETER

Popis výsledku anglicky

Combustion of conventional solid fuels, such as coal, in bubbling fluidized bed boilers offers potential for application in carbon capture and storage technologies. It is possible to employ the technology for cases of oxy-fuel combustion or in calcium looping. For oxy-fuel combustion is also possible to utilize biomass resulting in negative carbon dioxide emissions. For proper design fluidized bed devices is necessary to have a good knowledge about characteristics of inert material. This work focuses on heat transfer between fluidized bed and immersed surface. Respectively, the paper compares influence of mean diameter on heat transfer under conditions of oxy-fuel atmosphere. Selected correlations, available from open literature, are evaluated for three different mean diameters obtained by evaluation of sieve analysis. Mean diameter has a number of definitions giving different results for same sample. For evaluation of sieve analysis were used Sauter mean diameter, median and modus. The calculations were performed under operating conditions near to those of commercial conventional bubbling fluidized bed boilers.

Druh

O - Ostatní výsledky

CEP obor

JE - Nejaderná energetika, spotřeba a užití energie

OECD FORD obor

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Projekt

<a href="/cs/project/TA03020312" target="_blank" >TA03020312: Výzkum oxyfuel spalování ve stacionární fluidní vrstvě pro CCS technologie</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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