%0 Journal Article
%T COMPARACI¨®N DEL MUESTREO DE ESPECIES QU¨ªMICAS EN ZONAS REACTIVAS MEDIANTE EL USO DE SONDA CON Y SIN CUELLO S¨®NICO
%A Cadavid
%A Francisco
%A Uribe
%A Juli¨¢n
%A Amell
%A Andr¨¦s
%J Ingeniare. Revista chilena de ingenier¨ªa
%D 2010
%I Scientific Electronic Library Online
%R 10.4067/S0718-33052010000200012
%X the analysis of combustion products inside flames reaction zones and combustion chambers requires special equipment and methods of sampling compared to measurements made in chimneys. for example, non-intrusive experimental devices, such as laser techniques, or intrusive ones, such as sampling probes, should be used in zones where a flame is present. the use of the first ones means high costs, while the second ones must guarantee that the combustion reactions do not continue inside the sample probe; otherwise significant errors occur in the species measurements. to identify whether there are thermal and chemical kinetic effects that produce differences in the major species measurement, this paper presents a comparison of sampling results inside the reaction zone of a partially premixed flame when two types of sample probes are used: one with a sonic neck and a convective cooling of the sample, and another made just of a straight stainless steel tube. the results show that when using a straight tube there are errors in co2 and co measurements up to 7.0%, and errors in o2 measurements above 14%.
%K gas sample probe
%K aerodynamic quenching
%K interference probes.
%U http://www.scielo.cl/scielo.php?script=sci_abstract&pid=S0718-33052010000200012&lng=en&nrm=iso&tlng=en