“Towards Smart Ventilation” in Mid-sized buildings: Project content, objectives and structure, organization and work plan

A smart ventilation system is able to continually adjust itself to provide the desired indoor air quality (IAQ) while minimizing energy use, utility bills, thermal discomfort and noise. A smart ventilation system is also responsive to e.g. occupancy, outdoor conditions, direct sensing of contaminants and can provide information about e.g. IAQ, energy use and the need for maintenance or repair. Technically, all components for such systems are available in the market.  

Modelling and optimisation of absorption system operation. Application to a real installation

We present the dynamic modelling of an absorption system and an application to a large air-conditioned system. This study was performed using the ALLAN.Simulation software, a pre- and post- processor enabling the symbolic description of systems. The absorption system is a direct gas double effect absorption chiller or heater, using LiBr/HB2BO as working fluid. This modelling has two aims. The first one is to optimize the water circuit by determining the volume of a storage tank that maximise the energetical and economic operation performances.

Optimisation of the air flow performance of ventilated painting areas.

Painting large objects like cars or trucks usually generates high levels of pollution that can be eliminated by operating in a closed painting booth equipped with a blowing ceiling which produces a vertical ventilation flow. When the process does not allow the work to be carried out in a completely confined space (in the presence of a travelling crane for example) one of the only ways to remove pollution is the ventilated area. A basic ventilated area is merely a floor area of an industrial premises located above a pit equipped with an air exhaust system.