References of "Dumont, Olivier"
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See detailModelling of organic Rankine cycle power systems in off-design conditions: an experimentally-validated comparative study
Dickes, Rémi ULg; Dumont, Olivier ULg; Daccord, Rémi et al

in Energy (2017), 123

Because of environmental issues and the depletion of fossil fuels, the world energy sector is undergoing many changes toward increased sustainability. Among the many fields of research and development ... [more ▼]

Because of environmental issues and the depletion of fossil fuels, the world energy sector is undergoing many changes toward increased sustainability. Among the many fields of research and development, power generation from low-grade heat sources is gaining interest and the organic Rankine cycle (ORC) is seen as one of the most promising technologies for such applications. In this paper, it is proposed to perform an experimentally-validated comparison of different modelling methods for the off-design simulation of ORC-based power systems. To this end, three types of modelling paradigms (namely a constant-efficiency method, a polynomial-based method and a semi-empirical method) are compared both in terms of their fitting and extrapolation capabilities. Post-processed measurements gathered on two experimental ORC facilities are used as reference for the models calibration and evaluation. The study is first applied at a component level (i.e. each component is analysed individually) and then extended to the characterization of the entire organic Rankine cycle power systems. Benefits and limi- tations of each modelling method are discussed. The results show that semi-empirical models are the most reliable for simulating the off-design working conditions of ORC systems, while constant-efficiency and polynomial-based models are both demonstrating lack of accuracy and/or robustness. [less ▲]

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See detailDesign optimization of Rankine cycle systems for waste heat recovery from passenger car engines
Lemort, Vincent ULg; Legros, Arnaud; Dumont, Olivier ULg et al

Conference (2017, February 07)

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See detailPerformance of a reversible heat pump/organic Rankine cycle unit coupled with a passive house to get a positive energy building
Dumont, Olivier ULg; Carmo, Carolina; Fontaine, Valentin et al

in Journal of Building Performance Simulation [=JBPS] (2016)

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See detailEconomic assessment of electric energy storage for load shifting in positive energy building
Dumont, Olivier ULg; Carmo, Carolina; Georges, Emeline ULg et al

in International Journal of Energy and Environmental Engineering (2016)

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See detailEXPERIMENTAL INVESTIGATIONS OF THE VALORIZATION OF THE EXHAUST WASTE HEAT OF A GASOLINE ENGINE BASED ON A RANKINE CYCLE
Dumont, Olivier ULg; Legros, Arnaud; Diny, Mouad et al

Conference (2016)

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See detailPerformance Evaluation of a HP/ORC (Heat Pump/Organic Rankine Cycle) System with Optimal Control of Sensible Thermal Storage
Carmo, Carolina; Nielsen, MAds; Elmegaard, Brian et al

Conference (2016)

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See detailHot water tanks : how to select the optimal modelling approach?
Dumont, Olivier ULg; Carmo, Carolina; Dickes, Rémi ULg et al

Conference (2016)

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See detailAssessment of Emerging Renewable Energy-based Cogeneration Systems for nZEB Residential Buildings
Carmo, Carolina; Dumont, Olivier ULg; Nielsen, Mads Pagh et al

Conference (2016)

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See detailPerformance Evaluation of a HP/ORC System with Optimal Control of Sensible Thermal Storage
Carmo, Carolina; Dumont, Olivier ULg; Nielsen, Mads Pagh et al

Conference (2016)

Detailed reference viewed: 30 (1 ULg)
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See detailEconomic assessment of energy storage for load shifting in Positive Energy Building
Dumont, Olivier ULg; Carmo, carolina; Georges, Emeline ULg et al

Conference (2016)

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See detailAnalysis and comparison of different modeling approaches for the simulation of a micro-scale organic Rankine cycle power plant
Dickes, Rémi ULg; Dumont, Olivier ULg; Legros, Arnaud ULg et al

in Proceedings of the 3rd International Seminar on ORC Power Systems (2015, October 12)

When simulating a system based on the organic Rankine cycle (ORC), different modeling methods can be used to predict its performance. Each method is characterized by advantages, limitations and a level of ... [more ▼]

When simulating a system based on the organic Rankine cycle (ORC), different modeling methods can be used to predict its performance. Each method is characterized by advantages, limitations and a level of complexity. This contribution aims to assess the impact of the modeling approach on the performance prediction of ORC systems. To this end, a 2.8 kWe ORC unit is investigated as case study. In this paper, the components of the test bench are modeled using different approaches of increasing complexity and each model is calibrated using experimental data from the test rig. The goodness of fit as well as the benefits and limitations of each modeling methods are analyzed and discussed. [less ▲]

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See detailDesign, Modeling, and Performance Optimization of a Reversible Heat Pump/Organic Rankine Cycle System for Domestic Application
Quoilin, Sylvain ULg; Dumont, Olivier ULg; Harley Hansen, Kristian et al

in Journal of Engineering for Gas Turbines and Power (2015)

In this paper, an innovative system combining a heat pump (HP) and an organic Rankine cycle (ORC) process is proposed. This system is integrated with a solar roof, which is used as a thermal source to ... [more ▼]

In this paper, an innovative system combining a heat pump (HP) and an organic Rankine cycle (ORC) process is proposed. This system is integrated with a solar roof, which is used as a thermal source to provide heat in winter months (HP mode) and electricity in summer months (ORC mode) when an excess irradiation is available on the solar roof. The main advantage of the proposed unit is its similarity with a traditional HP: the HP/ORC unit only requires the addition of a pump and four-way valves compared to a simple HP, which can be achieved at a low cost. A methodology for the optimal sizing and design of the system is proposed, based on the optimization of both continuous parameters such as heat exchanger size or discrete variables such as working fluid. The methodology is based on yearly simulations, aimed at optimizing the system performance (the net yearly power generation) over its whole operating range instead of just nominal sizing operating conditions. The simulations allow evaluating the amount of thermal energy and electricity generated throughout the year, yielding a net electric power output of 3496 kWh throughout the year. [less ▲]

Detailed reference viewed: 73 (4 ULg)