References of "Davin, Elisabeth"
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See detailIntégration système et simulation
Hennaut, Samuel ULiege; Davin, Elisabeth ULiege; Baiwir, Romain ULiege et al

Scientific conference (2017, September 20)

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See detailAbout the use of CO2 as tracer gas for identification of air renewal; combination with co-heating test
Andre, Philippe ULiege; Aparecida Silva; Davin, Elisabeth ULiege et al

in Heiselberg, Per Kvols (Ed.) CLIMA 2016 - Proceedings of the 12th REHVA World Congress : volume 5 (2016)

Three types of tracer gas test are, until now, mentioned in international standards: Injection at constant indoor concentration, injection at constant flow rate and transient injection followed by a ... [more ▼]

Three types of tracer gas test are, until now, mentioned in international standards: Injection at constant indoor concentration, injection at constant flow rate and transient injection followed by a recording of the decontamination curve. A fourth method is proposed in this paper: it is based on the same scenario as the third method, but with weighting of the mass of tracer gas (CO2) injected and integration of the curve of indoor concentration on the whole testing period. The concentration peak is used to identify the “effective” volume of the building zone considered; this volume, associated to the final concentration, is used to calculate the amount of CO2 remaining inside the zone at the end of the test. The total mass of renovation air is then deduced from the corresponding CO2 mass balance. The CO2 can be injected from a bottle or directly produced by combustion on site. In the latter case, the tracer gas method is combined with a co-heating test. It can be done, for example, with a current camping butane cooker: From the weighting of this device and continuous recording of air temperature, CO2 concentration and humidity ratio, three significant (energy, CO2 and water) balances are established in such a way to verify and tune a reference simulation model of the building zone. [less ▲]

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See detailOptimization-based calibration for dynamic building simulation models : a case study
Monetti, Valentina; Davin, Elisabeth ULiege; Fabrizio, Enrico et al

in Mathur, Jyotirmay; Garg, Vishal (Eds.) Proceedings of BS2015: 14th Conference of International Building Performance Simulation Association (2015)

This study presents an original methodology for calibrating building energy models based on monitored data. An optimization-based approach was applied to a monitored test building coupling the building ... [more ▼]

This study presents an original methodology for calibrating building energy models based on monitored data. An optimization-based approach was applied to a monitored test building coupling the building simulation program EnergyPlus with the optimization software GenOpt. An objective function was set to minimize the difference between the simulated and the monitored energy consumption at the hour time scale, varying the building model parameters selected at the beginning as the most influencing. After calibration, the observed heating energy consumption of the case study matched closely the monitored data, the model accuracy was verified according to the MBE and the Cv(RMSE) limit set by the ASHRAE guideline 14. [less ▲]

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See detailCalibration of building energy simulation models based on optimization: A case study
Monetti, V.; Davin, Elisabeth ULiege; Fabrizio, E. et al

in Energy Procedia (2015), 78

This study applies an optimization-based approach for calibrating building energy models using monitored data. The calibration was carried out on a test building coupling the EnergyPlus energy simulation ... [more ▼]

This study applies an optimization-based approach for calibrating building energy models using monitored data. The calibration was carried out on a test building coupling the EnergyPlus energy simulation tool with the GenOpt optimization tool. The objective function was set to minimize the difference between simulated and monitored energy consumption. For evaluating the model accuracy, the Mean Bias Error (MBE) and the Coefficient of Variation of the RMSE (Cv (RMSE)) were calculated and found consistent with ASHRAE guideline 14 limits for a model to be considered calibrated. © 2015 The Authors. [less ▲]

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See detailSimulation of a vertical ground heat exchanger as low temperature heat source for a closed adsorption seasonal storage of solar heat
Hennaut, Samuel ULiege; Thomas, Sébastien ULiege; Davin, Elisabeth ULiege et al

in Energy Procedia (2014), 48

Get It @ ULg(opens in a new window)|View at Publisher| Export | Download | More... Energy Procedia Volume 48, 2014, Pages 370-379 2nd International Conference on Solar Heating and Cooling for Buildings ... [more ▼]

Get It @ ULg(opens in a new window)|View at Publisher| Export | Download | More... Energy Procedia Volume 48, 2014, Pages 370-379 2nd International Conference on Solar Heating and Cooling for Buildings and Industry, SHC 2013; Freiburg; Germany; 23 September 2013 through 25 September 2013; Code 104547 Simulation of a vertical ground heat exchanger as low temperature heat source for a closed adsorption seasonal storage of solar heat (Conference Paper) Hennaut, S.a , Thomas, S.a, Davin, E.a, Skrylnyk, A.b, Frère, M.b, André, P.a a University of Liège, Building Energy Monitoring and Simulation, Avenue de Longwy 185, 6700 Arlon, Belgium b University of Mons, Energy Research Cente, Boulevard Dolez 31, 7000 Mons, Belgium View references (9) Abstract This paper deals with the simulation of a vertical geothermal heat exchanger as low temperature heat source for a closed adsorption seasonal heat storage. The seasonal storage should allow reaching a nearly 100 % solar fraction for space heating of a "low energy" building". The selected adsorbent and adsorbate are respectively bromide strontium and water. The studied system, including the building and the ground exchanger, is simulated using the dynamic simulation software TRNSYS. Results show that expected performances are reached with a borehole of 100 m. The evaporation temperatures computed are really close to 0°C which might cause some problems. But an advanced research would maybe impose a deeper borehole to avoid cooling the ground on the long term. [less ▲]

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See detailDynamic simulations of solar combisystems integrating a seasonal sorption storage: Influence of the combisystem configuration
Hennaut, Samuel ULiege; Thomas, Sébastien ULiege; Davin, Elisabeth ULiege et al

in Strojarstvo: Journal for Theory and Application in Mechanical Engineering (2012, December), 54(6), 433-440

This paper focuses on the sizing of solar combisystems with adsorption seasonal storage to target autonomous solar space heating. Two main configurations of the combisystem are simulated, including one or ... [more ▼]

This paper focuses on the sizing of solar combisystems with adsorption seasonal storage to target autonomous solar space heating. Two main configurations of the combisystem are simulated, including one or two tanks. The influence of the seasonal storage on the sizing of the tanks is also discussed. Results show that performances of the system with two tanks are better (2 to 4 % with seasonal storage) but some improvements should be possible for the single tank configuration. The sizing of the sensible storage is nearly independent of the solar collectors area if there is a seasonal storage. The sensible storage size increase with the collectors area without adsorption storage. The analysis is conducted in simulation using the TRNSYS program. [less ▲]

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See detailDynamic simulation of residential buildings with seasonal sorption storage of solar energy - parametric analysis
Hennaut, Samuel ULiege; Thomas, Sébastien ULiege; Davin, Elisabeth ULiege et al

in ISES solar world congress 2011 - Proceedings (2011, August 28)

This work focuses on the evaluation of the performances of a solar combisystem coupled to seasonal thermochemical storage using SrBr2/H20 as adsorbent/adsorbate couple. The objective is to determine the ... [more ▼]

This work focuses on the evaluation of the performances of a solar combisystem coupled to seasonal thermochemical storage using SrBr2/H20 as adsorbent/adsorbate couple. The objective is to determine the characteristics required for solar system and storage reactor to reach a 100 % solar fraction for a building with a low heating load. The complete system, including the storage reactor, is simulated, using the dynamic simulation software TRNSYS. The influence of some components and parameters of the system is estimated: weather, collectors and storage reactor parameters. [less ▲]

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