École de technologie supérieure is a public engineering school in Montreal, Quebec, Canada.Founded in 1974, the École de technologie supérieure is part of the Université du Québec system. Specialized in applied teaching in engineering and technology transfer to companies, it teaches engineers and researchers who are recognized for their practical and innovative approach.In any given year, 25% of all engineers receiving a diploma from an engineering school or faculty in the province of Quebec graduate from the ÉTS. Hence, it is ranked first in Quebec and fourth in Canada for the total number of engineering diplomas awarded annually. Wikipedia.
Lesage F.J.,Cegep de lOutaouais |
Page-Potvin N.,Ecole de Technologie Superieure of Montreal
Energy Conversion and Management | Year: 2013
Recent progress in thermoelectric power production using Bismuth Telluride Bi2Te3 semiconductor modules has revealed the potential to effectively convert large volumes of low temperature industrial waste-heat to electricity. In order to render the process more cost effective, greater understanding of the effects of external influences on the module's power output is necessary. Such an understanding would facilitate the design of thermoelectric generators which serve to exploit available waste-heat. To this end, an experimental study is performed on the most adjustable operating parameter on a thermoelectric liquid-to-liquid generator, the electrical load resistance. A test stand apparatus is built applying a temperature gradient on commercially available Bi2Te3 thermoelectric modules by means of an injection and a rejection of heat brought upon by counter current hot and cold liquids. The thermoelectric power production relative to an increasing electrical load is investigated by means of an analysis of experimentally measured results in which the thermal input conditions are varied. The results detail the thermoelectric characteristics of a liquid-to-liquid generator under an increasing electrical load resistance by identifying the optimal electrical load resistance for peak thermoelectric production. A correlation between peak thermoelectric power and thermal input conditions is presented as well as an investigation into the validity of electrical load matching. © 2012 Elsevier Ltd. All rights reserved. Source
Belanger P.,Ecole de Technologie Superieure of Montreal
Ultrasonics | Year: 2014
Thickness mapping in aging structures suffering from corrosion is challenging especially when the structure is only partially accessible. In plates the high order shear horizontal guided wave modes all have a cutoff frequency thickness product below which they cannot propagate. This property is potentially attractive to estimate the minimum remnant thickness between two transducers. When using a source and a sensor array it is possible to control the number of modes being excited and the size of the region interrogated by the technique. Finite element simulations were used to show that by exciting multiple guided wave modes simultaneously and identifying which modes are received by a sensor array it is possible to estimate the minimum remaining thickness along the propagation path. Initial experimental results showed excellent agreement with the finite element simulations when the plate is uniform and with a thickness reduction between the source and the sensor arrays the minimum remnant thickness was underestimated by approximately 20%. © 2013 Elsevier B.V. All rights reserved. Source
Lamarche L.,Ecole de Technologie Superieure of Montreal
Renewable Energy | Year: 2013
Over the years several methods have been proposed to simulate and design the earth heat exchanger for a ground-source heat pump (GSHP) system. Some of these methods are based on numerical techniques while others rely on analytic solutions. Among the latter, two classical solutions have been extensively used over the years, the infinite line source (ILS) solution and the infinite cylindrical source (ICS). These solutions were known to overestimate the fluid temperature when the time scale is important and are valid only in a time range between a minimum and a maximum value which are often adequate for must design applications. It is usually accepted that for small Fourier numbers, the ICS solution should be used instead of the ILS. This paper revisits the short-term behavior of these solutions and we arrive at different conclusions than those usually accepted in the literature if the Fourier number is based on the borehole radius, which is normally the case. The reasons for these discrepancies are discussed and several options are proposed. © 2013 Elsevier Ltd. Source
Pham X.-T.,Ecole de Technologie Superieure of Montreal
Numerical Heat Transfer; Part A: Applications | Year: 2013
The quasi stationary-state solution of the two-dimensional Rosenthal equation for a moving heat source using the meshless element free Galerkin method is studied in this article. Node-based moving least square approximants are used to approximate the temperature field. Essential boundary conditions are enforced by using Lagrange multipliers. A Gaussian surface heat source is used for the modeling of the moving heat source. The results obtained for a two-dimensional model are compared with the results of the finite-element method. © 2013 Copyright Taylor and Francis Group, LLC. Source
École de Technologie Supérieure of Montreal | Date: 2015-01-29
Methods and systems for rate-constrained search ordering algorithms for reducing computational cost of motion estimation in video coding have been provided. Conventional search orderings, such as spiral search, can weaken the filtering criterion of rate-constrained successive elimination algorithms. Simulation results provided herein above demonstrate that, on average, the amount of SAD (sum of absolute differences) operations required to encode the tested sequences, is reduced using embodiments of the invention, when compared to the conventional implementations of spiral search for example. Advantageously, for sequences with unpredictable motion, this reduction may be greater than 5%, and may even exceed 10% when smaller block partitions are evaluated.