References of "Prieels, Luc"
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See detailExperimental performance characterization of a new single room ventilation device with heat recovery
Gendebien, Samuel ULg; Georges, Emeline ULg; Prieels, Luc et al

in Proceedings of the 34th AIVC conference (2013, September)

Nowadays, important efforts are made to reduce the residential building energy consumption. In this context, a growing interest for heat recovery ventilation has been observed during the last decades. The ... [more ▼]

Nowadays, important efforts are made to reduce the residential building energy consumption. In this context, a growing interest for heat recovery ventilation has been observed during the last decades. The present paper focuses on a new single room ventilation with heat recovery. Double flow ventilation is achieved through the integration of the unit into windows ledges. The developed device is particularly suitable compared to traditional centralized heat recovery ventilation units for retrofitted houses due to the absence of air extracting and air pulsing ducts through the house. The first part of the paper consists in describing the characteristics and properties of the developed device (volume, components, flow configuration, advantages and drawbacks). In the second part of the paper, an experimental approach is presented to characterize the unit. The criteria of performance are based on: - Thermal effectiveness of the unit (testing of a recovery heat exchanger), - Hydraulic aspects (flows delivered by the unit vs energy supplied to the unit), - Acoustic aspects. The overall performance of the unit can be established based on the experimental results described here above. Cartography of performance (ratio between the recovered heat and the supply electrical power) can be drawn, depending on the flow rates delivered by the unit and the indoor/outdoor temperature difference. The last part of the paper compares the new system with natural, simple exhaust ventilation and traditional centralized systems in terms of primary energy, consumer price and carbon dioxide emissions. Results show that the presented device seems more competitive than natural and simple exhaust ventilation for the Belgian climate. The single room ventilation investigated in this paper also shows better performance than most of the centralized ventilation systems tested on site. [less ▲]

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See detailExperimental investigation on a decentralized air handling terminal: procedure of aeraulic and thermal performance determination of the entire unit under several operating conditions
Gendebien, Samuel ULg; Prieels, Luc; Lemort, Vincent ULg

in Proceedings of the 6th European Thermal Sciences Conference (2012, September)

A new local ventilation device is actually developed in such a way to procure ventilation “on demand” in each room, with a maximal effectiveness. It consists in a wall or window frame mounted plane ... [more ▼]

A new local ventilation device is actually developed in such a way to procure ventilation “on demand” in each room, with a maximal effectiveness. It consists in a wall or window frame mounted plane-parallel box, containing two (injection and extraction) fans, an electronic control, and a heat recovery exchanger. The present paper describes the experimental investigations carried out on some single components and on the entire unit in order to characterize the aeraulic and thermal performance of the device. [less ▲]

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See detailDecentralized mechanical ventilation with heat recovery
Aparecida Silva, Cleide; Gendebien, Samuel ULg; Hannay, Jules et al

in Proceedings of the 32nd AIVC Conference (2011, October)

A new local ventilation device is designed in such a way to procure ventilation “on demand” in each room, with a maximum of effectiveness and a minimum of energy waste. It consists in a parapipedic box to ... [more ▼]

A new local ventilation device is designed in such a way to procure ventilation “on demand” in each room, with a maximum of effectiveness and a minimum of energy waste. It consists in a parapipedic box to be located in one external wall (for example, just above a window) and containing two (injection and extraction) fans and a recovery heat exchanger. The design of the heat exchanger is associated to the selection of the two fans in view of the best compromise between heat recovery effectiveness and “auxiliary” consumptions. Great attention is paid to supply and exhaust air openings on both indoor and outdoor sides of the device, in order to get the highest ventilation effectiveness. A fair compromise is looked for between air flow control “authority” and “auxiliary” consumption. [less ▲]

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See detailPerformances of DAHT connected to building airthightness and indoor hygrothermal climate
Masy, Gabrielle; Lebrun, Jean; Gendebien, Samuel ULg et al

in Proceedings of the 32nd AIVC Conference (2011, October)

As building insulation level increases, the coupling of ventilation systems with building enveloppe airtightness becomes an important issue in order to improve buildings energy performances. A building ... [more ▼]

As building insulation level increases, the coupling of ventilation systems with building enveloppe airtightness becomes an important issue in order to improve buildings energy performances. A building ventilation model can be built on a set of resistances and generators in order to handle infiltration, natural ventilation as well as fan driven air flows. The model is able to assess the indoor air humidity level and the building energy balance. Double flow ventilation can be handled through decentralized air handling terminals (DAHT), integrated in window ledges. A model of DAHT can be combined with the model of a whole building envelope, including infiltrations as well as dynamic behaviour, allowing comparisons with classical ventilation systems, such as natural or hybrid systems, or with centralized double flow systems. Results regarding energy consumptions, air humidity levels and superficial condensation risks can be analysed. Fresh air flow can be calibrated in order to meet air quality standards related to indoor humidity level and CO2 concentration. The modelization of buiding indoor hygro-thermal climate allows a complete assessment of the seasonal heat exchanger efficiency, including heat recovery through the condensation of indoor air humidity when it flows through the exchanger. [less ▲]

Detailed reference viewed: 30 (6 ULg)