http://hdl.handle.net/2117/4000 Thu, 20 Jun 2013 07:16:26 GMT 2013-06-20T07:16:26Z webmaster.bupc@upc.edu Universitat Politècnica de Catalunya. Servei de Biblioteques i Documentació no http://hdl.handle.net/2117/18375 Title: Axial piston pumps, new trends and development Authors: Bergadà Granyó, Josep Maria; Kumar, Sushil; Watton, John Mon, 18 Mar 2013 16:11:48 GMT http://hdl.handle.net/2117/18375 2013-03-18T16:11:48Z Bergadà Granyó, Josep Maria; Kumar, Sushil; Watton, John no http://hdl.handle.net/2117/17243 Title: Expert system design for sewage treatment plant Authors: Bouza Fernández, Javier; Gonzalez Filgueira, Gerardo; Heras Jiménez, Salvador Augusto de las; Vazquez Gonzalez, David Wed, 09 Jan 2013 17:54:09 GMT http://hdl.handle.net/2117/17243 2013-01-09T17:54:09Z Bouza Fernández, Javier; Gonzalez Filgueira, Gerardo; Heras Jiménez, Salvador Augusto de las; Vazquez Gonzalez, David no http://hdl.handle.net/2117/16811 Title: Using CFD to estimate external mass transfer coefficients and intra-particle diffusional effects on the supercritical hydrogenation of sunflower oil Authors: Guardo Zabaleta, Alfredo de Jesús; Ramírez Rangel, Eliana; Larrayoz Iriarte, María Angeles; Recasens Baxarías, Francisco Javier Abstract: Hydrogenation of vegetable oils is an important process in the food industry because of its widespread application to produce margarines, shortenings, and other food components. Supercritical technology has proven to be a reliable alternative to conventional hydrogenation process because not only the trans isomer levels can be reduced, but also offers a clean, economic and environmental friendly process. Computational Fluid Dynamics (CFD) modeling applied to the supercritical hydrogenation reaction can be useful in visualizing and understanding the mass transfer phenomena involved. CFD is applied to the study of the catalytic hydrogenation of sunflower oil in the presence of a supercritical solvent. A mix of sunflower oil, hydrogen and supercritical propane (used as a solvent) is the flowing fluid. Their transport properties at high pressure are incorporated within a CFD commercial code in order to estimate them online within the simulation process. A 2D CFD model of a single Pd-based catalyst pellet is presented. Intra-particle and surface concentration profiles and surface mass fluxes for all species present in the mixture (oil triglycerides and hydrogen) are obtained and compared against experimental results. Different temperatures, flow velocities and particle sizes are studied and external and internal mass transfer phenomena are analyzed. External mass transfer coefficients for hydrogen and oil triglycerides are obtained and a correlation for estimating them is presented. Mon, 29 Oct 2012 12:46:34 GMT http://hdl.handle.net/2117/16811 2012-10-29T12:46:34Z Guardo Zabaleta, Alfredo de Jesús; Ramírez Rangel, Eliana; Larrayoz Iriarte, María Angeles; Recasens Baxarías, Francisco Javier no Hydrogenation of vegetable oils is an important process in the food industry because of its widespread application to produce margarines, shortenings, and other food components. Supercritical technology has proven to be a reliable alternative to conventional hydrogenation process because not only the trans isomer levels can be reduced, but also offers a clean, economic and environmental friendly process. Computational Fluid Dynamics (CFD) modeling applied to the supercritical hydrogenation reaction can be useful in visualizing and understanding the mass transfer phenomena involved. CFD is applied to the study of the catalytic hydrogenation of sunflower oil in the presence of a supercritical solvent. A mix of sunflower oil, hydrogen and supercritical propane (used as a solvent) is the flowing fluid. Their transport properties at high pressure are incorporated within a CFD commercial code in order to estimate them online within the simulation process. A 2D CFD model of a single Pd-based catalyst pellet is presented. Intra-particle and surface concentration profiles and surface mass fluxes for all species present in the mixture (oil triglycerides and hydrogen) are obtained and compared against experimental results. Different temperatures, flow velocities and particle sizes are studied and external and internal mass transfer phenomena are analyzed. External mass transfer coefficients for hydrogen and oil triglycerides are obtained and a correlation for estimating them is presented. http://hdl.handle.net/2117/16688 Title: European Project Semester: a semester of project based learning in sustainability with multicultural and multidisciplinary bachelor of engineering student groups Authors: Segalàs Coral, Jorge; Benson Murphy, Patricia; Esbrí Solanas, Maria Eugènia Tue, 09 Oct 2012 11:52:20 GMT http://hdl.handle.net/2117/16688 2012-10-09T11:52:20Z Segalàs Coral, Jorge; Benson Murphy, Patricia; Esbrí Solanas, Maria Eugènia no http://hdl.handle.net/2117/14992 Title: Declaración de Luarca sobre el Derecho Humano a la Paz Authors: Xercavins, Josep; Villán Durán, Carlos; Vega López, Jesús E.; Salado Osuna, Ana; Rueda Castañón, Carmen Rosa; Mancisidor, Mikel; Leret O'Neill, Carlota; Chueca Sancho, Angel; Faleh Pérez, Carmelo; Faúndez Ledesma, Héctor; Fernández Menéndez, Mercedes; Fernández Sánchez, Pablo Antonio; García Fernández, Román; Gómez Isa, Felipe; Hidalgo Tuñón, Alberto Tue, 07 Feb 2012 11:20:37 GMT http://hdl.handle.net/2117/14992 2012-02-07T11:20:37Z Xercavins, Josep; Villán Durán, Carlos; Vega López, Jesús E.; Salado Osuna, Ana; Rueda Castañón, Carmen Rosa; Mancisidor, Mikel; Leret O'Neill, Carlota; Chueca Sancho, Angel; Faleh Pérez, Carmelo; Faúndez Ledesma, Héctor; Fernández Menéndez, Mercedes; Fernández Sánchez, Pablo Antonio; García Fernández, Román; Gómez Isa, Felipe; Hidalgo Tuñón, Alberto no