Spray production and its miniaturization are common need and goal in Chemical Engineering and Chemical fields. This work aims the production of miniaturized low cost spray injection systems using planar and three-dimensional microchannels, both 73 cm long and 100 ?m diameter, and acrylic as substrate. Tests and simulation used fluid flow rates up to 10 standard mL/min, for gaseous samples, and up to 1 mL/min to liquid ones; tracers and filming were used to understanding fluid behavior. Simulations and experimental results showed good agreement: planar channels seem to be useful for mixing two liquids whereas three-dimensional channels produce small droplets useful for sample pretreatment in miniaturized impactors.
Biografia do Autor
Lilian Marques Silva, Polytechnic School, University of São Paulo
Obtained her degree in Technology in Materials, Process and Electronics Devices from the Faculty of Technology of São Paulo in 2002 and her MSc degree in Electrical Engineering from the Polytechnic School, University of São Paulo in 2005.
Michele Yuriko Ieiri, Faculty of Technology of São Paulo
Since 2006, she has been an undergraduate student in Faculty of Technology of São Paulo. In 2007, she was a trainee employer in Japan semiconductor facility and since 2008 she develops undergraduate research, with CNPq scholarship, in Faculty of Technology of São Paulo.
Eduardo Yoiti Matsui, Faculty of Technology of São Paulo
Since 2006, he has been an undergraduate student in Faculty of Technology of São Paulo, where he develops undergraduate research, with CNPq scholarship, since 2008.
Roberto da Rocha Lima, Instituto de Física da USP
Sou graduado em Tecnologia de Materiais Proc. e Comp. Eletrônicos pela Faculdade de Tecnologia de São Paulo (1996), obtive meu grau de mestre e doutor, ambos em Engenharia Elétrica pela Escola Politécnica da Universidade de São Paulo (2004 e 2009, respectivamente). No Instituto de Física da Universidade de São Paulo sou especialista e responsável pelo sistema de vácuo dos equipamentos de pesquisa do Laboratório do Acelerador Linear (máquina aceleradora, forno de alto vácuo, etc.), também desenvolvo pesquisa em filmes finos e compósitos. Filmes produzidos em equipamento de plasma construído em laboratório como parte do meu doutorado.
Eliphas Wagner Simões, Polytechnic School, University of São Paulo
Obtained his degree in electrical engineering from Faculty Alvares Penteado in 1990. Since 2001 he has been an associated researcher at the Laboratório de Sistemas Integráveis of Polytechnic School—University of São Paulo where he received an MS degree in 1995 and a PhD degree in 2005.
Maria Lúcia Pereira da Silva, Polytechnic School, University of São Paulo and Faculty of Technology of São Paulo
Obtained her degree in chemistry from University of São Paulo in 1980. She has been a researcher Laboratório de Sistemas Integráveis of Polytechnic School—University of São Paulo since 1985 and a professor at Faculty of Technology of São Paulo since 1992. She received an MS degree in 1989 and her PhD degree in physical chemistry in 1995.
