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\hypersetup{pdftitle={Gas Measuring in a Coffee Husk and Rice Husk Burner with Forced"=draft Air Circulation},pdfauthor={Juan Eduardo Rolón Ríos, Alexander García Mariaca},pdfsubject={Tropentag 2016: Abstract},pdfkeywords={Biomass, coffee husk, combustion, emissions, forced-draft burner, rice husk},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 18-21, 2016, Vienna, Austria}}\\[1ex] \Large{``Solidarity in a competing world ---\\fair use of resources''\\[2ex]}}
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\begin{center}
\Large{\textbf{Gas Measuring in a Coffee Husk and Rice Husk Burner with Forced"=draft Air Circulation\footnote{\textbf{Contact Address:} Juan Eduardo Rolón Ríos, Foundation University Los Libertadores, Mechanical Engineering, Carrera 16 63 A - 68, 111221~Bogotá D.c., Colombia, \mbox{e-mail}: \email{jerolonr@libertadores.edu.co}}\\[0.8ex]}}
\normalsize{\textsc{Juan Eduardo Rolón Ríos$^{1}$, Alexander García Mariaca$^{2}$}}
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\begin{itemize*}
\item[]{\small{\textit{$^{1}$Foundation University Los Libertadores, Mechanical Engineering, Colombia}}}
\item[]{\small{\textit{$^{2}$Foundation University Los Libertadores, Mechanical Engineering, }}}
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\index[author]{Rolón Ríos, Juan Eduardo}
\index[author]{García Mariaca, Alexander}
\begin{center}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
In Colombia, coffee has been one of the main product for exportation for around 40 years. Between February of 2014 and January of 2015, the coffee production was 12'217.000 bags of \mbox{60\,kg} each one. During the processing of this product exists one by"=product called coffee husk which was taken as waste but now it has some utility as biomass. Locally it has been developed fixed bed burners and whose energy has been used in the coffee drying process. Like coffee, rice has a husk. In Colombia, rice production for 2012 was 823.219 tons (According to DANE). In general, husk of coffee and rice are used as fertiliser, but there have been local studies, technical and economical, in order to use this product as biomass. 



For this work it was built a forced"=draft burner composed by one fan, one husk feeding screw, one combustion chamber and one post"=combustion chamber. In this equipment, the fuel"=air ratio can be variated adjusting the husk feeding screw and the amount of air given by the centrifugal fan. The minimal air flow for this equipment is 0.004 m$^{3}$/s. The principal variables for the measuring were: air excess and type of husk (rice and coffee). The combustion gases were measured with a TEXA gas analyzer after using a trap for particulate matter. The combustion efficiency was calculated using the CO concentration and the HC concentration measured by the gas analyzer. The results for efficiency let say that this kind of burner could be used in the sowing fields to provide them with thermal or electric energy. Additionally, the ashes generated in this process can be used as fertilisers within the sowing field.



}

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\noindent \textbf{Keywords:} Biomass, coffee husk, combustion, emissions, forced"=draft burner, rice husk
\index[key]{Biomass}
\index[key]{Coffee husk}
\index[key]{Combustion}
\index[key]{Emissions}
\index[key]{Forced"=draft burner}
\index[key]{Rice!husk}
\end{document}
