An experimental study of the combustion characteristics of new burners used for home and water heating appliances and domestic cook top is presented with the aim of evaluating the effect of burner configurations and operating conditions on the emissions of gaseous pollutants and organic carbon (OC). Advanced in-situ optical diagnostics, based on laser induced emission spectroscopy (LIE), and ex-situ measurements, based on scanning mobility particle sizer (SMPS), and particles collection by water-based sampling technique, are used in order to evaluate the total particulate concentration and size distribution functions. For the home heating burners three different configurations: two premixed and one diffusive are studied under various operative conditions. Measurements have shown that particulate matter with size in the 1 nm to 10 nm size range is formed in all the examined conditions. The emitted mass concentration of these compounds is very low, of the order of 0.001 ppm. They are formed in large number concentrations in the flame region but are also strongly oxidized in the post-oxidation region of the devices. While domestic cook-top emitted a larger amount of organic carbon since it is not post-oxidized. Soot particles with size larger than 10 nm are not formed in all the examined conditions.
Emission of fine particles from natural gas domestic burners / P., Minutolo; D'Anna, Andrea; Commodo, Mario; R., Pagliara; G., Toniato; C., Accordini. - In: ENVIRONMENTAL ENGINEERING SCIENCE. - ISSN 1092-8758. - STAMPA. - 25:10(2008), pp. 1357-1363. [10.1089/ees.2007.0188]
Emission of fine particles from natural gas domestic burners
D'ANNA, ANDREA;COMMODO, MARIO;
2008
Abstract
An experimental study of the combustion characteristics of new burners used for home and water heating appliances and domestic cook top is presented with the aim of evaluating the effect of burner configurations and operating conditions on the emissions of gaseous pollutants and organic carbon (OC). Advanced in-situ optical diagnostics, based on laser induced emission spectroscopy (LIE), and ex-situ measurements, based on scanning mobility particle sizer (SMPS), and particles collection by water-based sampling technique, are used in order to evaluate the total particulate concentration and size distribution functions. For the home heating burners three different configurations: two premixed and one diffusive are studied under various operative conditions. Measurements have shown that particulate matter with size in the 1 nm to 10 nm size range is formed in all the examined conditions. The emitted mass concentration of these compounds is very low, of the order of 0.001 ppm. They are formed in large number concentrations in the flame region but are also strongly oxidized in the post-oxidation region of the devices. While domestic cook-top emitted a larger amount of organic carbon since it is not post-oxidized. Soot particles with size larger than 10 nm are not formed in all the examined conditions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
