SILENTHALPIC

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Silenthalpic

 

Context

Ventilation occupies an important place in the new buildings as well as in renovation projects of existing ones. The challenge is then to ventilate efficiently. The role of the efficient ventilation is to ensure an adequate Indoor Air Quality (IAQ) to the occupants and in the same time limit the inconveniences (noise, costs, esthetic,…). Some studies show that the energetic consumption due to ventilation represents a relative part between 20 and 50% of the total consumption in highly isolated buildings.
In such a context, the concept of independent ventilation per room with heat recovery integrated in window ledge was developed. Instead using a centralized system implying two pipes network (fresh and stale air), this technology relies on several small units with heat recovery are installed in most of the building’s rooms.

Objectives:
Silenthalpic is a project driven by a consortium composed of different industrial companies as well as university laboratories. It aims to develop a brand new decentralized ventilation unit system which, in addition to recover heat, is able to recover humidity. The project is divided in three main topics:

  • The first is the study of the aero-acoustic phenomenon linked to the mechanical entilation. After a serious diagnostic, modeling methods are implemented and used to predict the different physical phenomena. Then different design iterations as well as active acoustic ventilation solutions are envisaged to reach good acoustic performances.
  • The second topic is about the development of an enthalpic (i.e. heat + mass transfer) exchanger. Bringing a new way to transfer water from the stale to the fresh air side, this exchanger will recover heat and water.  This will, on one side, reduce the thermal losses and, on the other side, help to keep a better humidity rate within the building. Numerical models are written to design and predict performances of the enthalpic exchanger. In parallel, the elaboration of an exchange membrane which will be implemented in the exchanger is made.
  • Finally, the third aspect focuses on the system parts. Strategies are elaborated and modelled to optimize the interaction between unit and other units, users, atmospheric conditions,…




Objectivies

Silenthalpic is a project driven by a consortium composed of different industrial companies as well as university laboratories. It aims to develop a brand new decentralized ventilation unit system which, in addition to recover heat, is able to recover humidity. The project is divided in three main topics:
•    The first is the study of the aero-acoustic phenomenon linked to the mechanical ventilation. After a serious diagnostic, modeling methods are implemented and used to predict the different physical phenomena. Then different design iterations as well as active acoustic ventilation solutions are envisaged to reach good acoustic performances.
•    The second topic is about the development of an enthalpic (i.e. heat + mass transfer) exchanger. Bringing a new way to transfer water from the stale to the fresh air side, this exchanger will recover heat and water.  This will, on one side, reduce the thermal losses and, on the other side, help to keep a better humidity rate within the building. Numerical models are written to design and predict performances of the enthalpic exchanger. In parallel, the elaboration of an exchange membrane which will be implemented in the exchanger is made.
•    Finally, the third aspect focuses on the system parts. Strategies are elaborated and modelled to optimize the interaction between unit and other units, users, atmospheric conditions,…


Project timeline

July 1st 2017-Decemeber 31st 2018

 

Fundings

DGO6 - Région Wallonne

Partners

CERETECH, CSTC, CENEARO, GREENCOM, MSC SOFTWARE BELGIUM, ANYSHAPE, THINGSPLAY, NANO4, ULiège

Publications

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Contacts

 Vincent.lemort-at-ulg.ac.be



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