Océ Printing Systems GmbH, Poing
The electrophotographic print process uses polymer toner particles to create the desired print image on the paper. After depositing the particles on the paper, the particle layer has to be heated beyond the glass point of the polymer to create a homogeneous layer. This fusing process is one of the most energy-consuming parts of the whole print process. It is therefore imperative to limit the ...
Use of COMSOL to Estimate the Thermal Properties and Kinetic Parameters for the Degradation of Anthocyanins in Grape Pomace
D.K. Mishra, and K.D. Dolan[1,2]
 Department of Biosystems and Agricultural Engineering, Michigan State University
 Department of Food Science and Human Nutrition, Michigan State University
Degradation of components in low-moisture and high-temperature food is difficult to model because of the temperature gradient and long heating time. A method was developed to estimate the thermal properties of grape pomace and the rate constant and activation energy of anthocyanin degredation.
M.J. Jakubinek[1,2], C.A. Whitman[2,3], and M.A. White[1,2,3]
Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada
Institute for Research in Materials, Dalhousie University, Halifax, Nova Scotia, Canada
Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada
There is considerable interest in the possibility of combining NTE materials with normal (positive) thermal expansion materials, to reduce the potential of failure of a material or component due to thermal stress fracture. Finite element analysis (FEM) is used to explore the overall expansion and thermal stress in composites.
A. Pellegrini, A. Beucci, and F. Costa
ALTRAN Italia, Pisa, Italy
In this paper a methodology for calculating the infrared signature of complex objects is presented. The transient thermal analysis allows us to evaluate the temperature distribution on the investigated object, pointing out which parts tend to be warmer. These temperature values are handled in the post processing phase in order to evaluate the zero range radiance distribution and the radiance of ...
N. Martaj1, P. Rochelle1, L. Grosu1, R. Bennacer2, and S. Savarese3
1LEEE, Université Paris X, Ville d'Avray, France
2Laboratoire Environnement, Energétique, Valorisation, Matériaux (LEEVAM), Université de Cergy-Pontoise, Neuville-Sur-Oise, France
3COMSOL France, Paris, France
The reciprocating thermal engine of Stirling type, with its varied external heat sources and efficiency improving regenerator, is an alternate solution to be taken into account for efficient power applications of renewable energies. Work and efficiency of this machine is strongly dependent on geometrical and physical parameters such as dimensions, heat transfer coefficients, heat source ...
Transient Conjugate Optical-thermal Fields in Thin Films Irradiated by Moving Sources: A Comparison between Back and Front Treatment
N. Bianco, O. Manca, and D. Ricci
Dipartimento di Energetica, Termofluidodinamica applicata e Condizionamenti ambientali, Università degli Studi di Napoli Federico II, Napoli, Italy
Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli Studi di Napoli, Aversa (CE), Italy
A two dimensional instationary analysis of the conjugate optical-thermal fields induced in a multilayer thin film structure on a glass substrate by a moving Gaussian laser source is carried out numerically in order to compare back and front laser treatment processes. COMSOL Multiphysics 3.4 code has been adopted to solve the combined thermal and electromagnetic problem in order to compare the two ...
Solution of Inverse Thermal Problem for Assessment of Thermal Parameters of Engineered H2 Storage Materials
I. Fedchenia, and B. van Hassel
United Technologies Research Center
East Hartford, CT
Materials based H2 storage systems for light duty vehicles need to meet challenging performance targets that have been developed by the FreedomCAR and Fuel Partnership. On-board reversible metal hydrides are typically integrated with heat transfer surfaces, e.g. in fin and tube heat exchangers, in order to reject the heat of H2 absorption at a high rate which is set by the refueling time ...
Application of COMSOL Multiphysics in the Study of Heat Transfer in Solids: Comparison with Measurements Obtained by Means of Infrared Photothermal Radiometry
V.M. Suárez Quezada, J.H. Wong, J.A. Calderón Arenas, E. Marín Moares, José Bruno Rojas Trigos, Antonio Gustavo Juarez Gracia, Jonathan F Guarachi solano
Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada Unidad Legaria del Instituto Politécnico Nacional, Mexico, Distrito Federal, Mexico
We report the use of Heat transfer Module of COMSOL Multiphysics and a technique based on Infrared Photothermal Radiometry to study the heat transfer of a homogeneous and isotropic solid material excited by a periodic laser beam on the front side of the sample, and one infrared detector on the rear side in order to obtain the evolution of difference of temperature with the time exposure. We use ...
J.A. Ospina and E. Canuto
Politecnico di Torino, Torino, Italy
The research project under which the COMSOL simulations are performed deals with multilayer and fine thermal control of an optical reference cavity for space applications. The cavity, made of Ultra Low Expansion glass (Corning ULE), must be kept close to the zero expansion temperature of the glass (close to room temperature). The target can only be met by active control, while leaving the cavity ...
Bourouga, B.1, Le Meur, G.1, Garnier, B.1, Michaud, J.F.2, Mohammed-Brahim, T.2
1 Laboratoire de Thermocinétique de Nantes
2 IETR – Groupe de Microélectronique-Université Rennes I
Development of new handling microsystems needs integration of field effect thin film transistors made directly on various low temperature substrates, as glass for example, with other functions. Argon laser is used to melt completely and then to crystallize 400 nm thick amorphous silicon films. However, the implementation of this process generates cracking and destruction of the silicon thin film ...