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See detailDesign aids for the design of steel moment connections
Jaspart, Jean-Pierre ULg

in Proceedings of the 5th International Colloquium on Stability of Metal Structures (1996)

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See detailDesign and analysis of an SOI MEMS voltage step-up converter
Gleeson, R.; Kraft, Michaël ULg; White, N. M.

in Journal of Micromechanics and Microengineering (2013), 23(11), 114017

Detailed reference viewed: 20 (1 ULg)
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See detailDesign and analysis of MEMS step up voltage converters
Gleeson, R.; Kraft, Michaël ULg; White, Neil

in IEEE Sensors 2012 (2012, November)

This paper presents a comprehensive analysis of voltage step-up converters for energy harvesting and other low-power applications. The step-up operation is based on isolating the charge of a mechanically ... [more ▼]

This paper presents a comprehensive analysis of voltage step-up converters for energy harvesting and other low-power applications. The step-up operation is based on isolating the charge of a mechanically variable capacitor and varying the gap between the electrodes by an appropriate method of providing an actuation force i.e. electrostatic or physical. Two devices are presented; a bi-stable device and a resonant device, specifically designed for solar and vibration energy harvesting respectively. The bi-stable device introduces a separate electrostatic actuator element to manipulate the variable capacitor electrodes, whereas, in the case of the resonant device, ambient vibrations provide the necessary actuation force. System-level Multisim models have been developed and verified using 3D FEM Coventorware and MEMS+ simulations. The devices were then fabricated using a dicing-free Silicon-on-Insulator (SOI) process developed at the Southampton Nanofabrication Centre. [less ▲]

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See detailDesign and analysis of SOI MEMS voltage step up converters
Gleeson, R.; Kraft, Michaël ULg; White, N. M.

in Proceedings PowerMEMS 2012 (2012, December)

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See detailDesign and analysis of two types of MEMS DC-DC step up voltage converters
Gleeson, R.; White, N. M.; Kraft, Michaël ULg

in MME 2011: Proceedings (2011)

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See detailDesign and calibration of a two-camera (VNIR and SWIR) hyperspectral acquisition system for the characterization of metallic alloys from the recycling industry
Barnabé, Pierre ULg; Dislaire, Godefroid ULg; Leroy, Sophie ULg et al

in Journal of Electronic Imaging (2015), 24(6),

The conception of a prototype combining two hyperspectral cameras, one ranging from visible to near-infrared and the other covering short-wave infrared, is presented. The prototype aims at the ... [more ▼]

The conception of a prototype combining two hyperspectral cameras, one ranging from visible to near-infrared and the other covering short-wave infrared, is presented. The prototype aims at the characterization of millimeter-sized metallic alloys particles, originating from end-of-life vehicles and waste electrical and electronic equipment recycling. This paper is meant to serve as a support for a similar project by presenting difficulties encountered and available solutions. The calibration steps necessary to obtain quality reflectance data are also described. Classification results obtained on 100 metallic fragments dataset are finally presented. [less ▲]

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See detailDesign and characterization of novel forms of human 16K prolactin, an antiangiogenic factor
Mainfroid, Véronique; Struman, Ingrid ULg; Weiner, Richard I. et al

Poster (1998, January)

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See detailDesign and develoment of a digital transducer
Lewis, CP; Kraft, Michael ULg; Hesketh, TG

in Proc. AEROTECH 95 (1995)

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See detailDesign and development of new polyamides by ring-opening polymerization for high performance composite materials
Tunc, Deniz; Carlotti, Stéphane; Lecomte, Philippe ULg et al

Poster (2013, May 16)

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See detailDesign and dimensioning of hydrogen transmission pipeline networks
de Wolf, Daniel ULg

in European Journal of Operational Research (2013), 229(1), 239-251

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See detailDesign and Evaluation of a High-Density Energy Storage Route with CO2 Re-Use, Water Electrolysis and Methanol Synthesis
Léonard, Grégoire ULg; Giulini, Davide; Villarreal-Singer, Diego

in Proceedings of the 26th European Symposium on Computer Aided Process Engineering - ESCAPE 26 (2016, June)

The energy transition corresponding to more electricity generation from variable and decentralized renewable energy sources requires the development of electricity storage technologies ranging from ... [more ▼]

The energy transition corresponding to more electricity generation from variable and decentralized renewable energy sources requires the development of electricity storage technologies ranging from seconds to seasons. The power-to-fuel process provides a way to store electricity as a liquid energy vector, leading to high energy density and cheap long-term storage at ambient conditions. In the present work, we study the powerto- methanol process combining CO2 capture, water/CO2 co-electrolysis and methanol synthesis. An Aspen Plus model focussing on the electrolysis and methanol synthesis sub-processes is presented. The energy conversion efficiency is improved from 40.1 to 53.0 % thanks to heat integration using the pinch method. Further works include the experimental demonstration of this technology as well as the development of control strategies for its regulation. [less ▲]

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See detailDesign and evaluation of a semantic enrichment process for bibliographic databases
Lacasta, Javier; Nogueras-Iso, Javier; Falquet, Gilles et al

in Data & Knowledge Engineering (2013), 88

The limited semantics of thesauri and similar knowledge models hinder the searching and browsing possibilities of the bibliographic databases classified with this type of resources. This work proposes an ... [more ▼]

The limited semantics of thesauri and similar knowledge models hinder the searching and browsing possibilities of the bibliographic databases classified with this type of resources. This work proposes an automatic process to convert a knowledge model into a domain ontology through the alignment with DOLCE, an upper level ontology. This process is facilitated by an intermediary alignment with Wordnet, a lexical model. The process has been tested with the thesauri and bibliographic databases of Urbamet and the European Urban Knowledge Network. The Urbamet model has been used to create an atlas of urban related resources with advanced search capabilities. [less ▲]

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See detailDesign and evaluation of new hydrogels for biomaterial purposes
Grandfils, Christian ULg; Barakat, I; Fairon, N et al

Conference (2003, October 23)

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See detailDesign and evaluation of new reinforced hydrogel membranes for biomaterial purposes
Fairon, N; Grandfils, Christian ULg; Barakat, I et al

Poster (2003, October 23)

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See detailDesign and Experimental investigation of a Small scale organic Rankine using a scroll expander
Declaye, Sébastien ULg; Quoilin, Sylvain ULg; Lemort, Vincent ULg

in Proceeding of the 13th International Refrigeration and Air Conditioning Conference at Purdue (2010, July 11)

The world is facing a historical increase in energy demand and energy consumption. As consequence the conventional fossil fuels are depleting faster with an inherent pollution causing sever damages to our ... [more ▼]

The world is facing a historical increase in energy demand and energy consumption. As consequence the conventional fossil fuels are depleting faster with an inherent pollution causing sever damages to our environment. Renewable energy sources are considered as a solution to both environmental issue and energy demand. At the same time a lot of waste heat is witnessed in processes in industries and other thermal devices such internal combustion engines. Our objective is to propose a solution to recover this heat wasted. The organic Rankine cycle appeared to us as a solution. This paper presents a study carried out on a prototype of small scale organic Rankine cycle (ORC) driven by two waste heat hot air streams. The prototype was designed using a diaphragm pump, a set of plate heat exchangers and an oil-free scroll compressor adapted to run in expander mode. The available literature on Organic Rankine Cycles only proposes theoretical studies of fluid selection for a given application. This study aims at comparing fluids experimentally. Therefore, several fluids (including R245fa and R123) were tested in the prototype and the performance was measured. The tests were performed to study the performance of the ORC system and the expander over a wide range of working conditions. The temperature of the heat sources varied between 150°C and 200°C. The maximum expander shaft power was above 2kW and maximum expander efficiency was 70%. These tests allowed to point out the critical characteristics that should be taken into account while selecting the components for the design of an ORC. [less ▲]

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See detailDesign and experimental validation of an adaptive control law to maximize power generation of a small-scale waste heat recovery system
Hernandez Naranjo, Jairo Andrés ULg; Desideri, Adriano ULg; Gusev, Sergei et al

in Applied Energy (2017), 203

Increasing the energy efficiency of industrial processes is a challenge that involves, not only improving the methodologies for design and manufacturing, but optimizing performance during part-load ... [more ▼]

Increasing the energy efficiency of industrial processes is a challenge that involves, not only improving the methodologies for design and manufacturing, but optimizing performance during part-load operation and transient conditions. A well-adopted solution consists of developing waste heat recovery (WHR) systems based on Organic Rankine Cycle (ORC) power units. The highest efficiency for such cycle is obtained at low superheating values, corresponding to the situation where the system exhibits time-varying nonlinear dynamics, triggered by the fluctuating nature of the waste heat source. In this paper, an adaptive control law using the Model Predictive Control (MPC) framework is proposed. This work goes a step beyond most of the existing scientific works in the field of ORC power systems, since the MPC controller is implemented in a lab-scale prototype, and its performance compared against a gain-scheduled PID strategy. The experimental results show that the adaptive MPC outperforms the gain-scheduled PID based strategy, as it allows to accurately regulate the evaporating temperature, while keeping vapor condition at the inlet of the expander i.e., the superheating, in a safe operating range, thus increasing the net power generation. [less ▲]