CLIVET ELFOFresh2 CPAN-U 70-120 Series - ELFOFresh²; Requirement: air quality and energy recovery; Fresh and clean air with efficient energy recovery; Indoor pollutants affect our health and buildings

8 ELFOFresh² BT15B012GB-00
ELFOFresh²
Requirement: air quality and energy recovery
Building design is changing
New building rules and regulations are changing the
traditional concept of house
These aspects ensure a considerable improvement in the energy
performance of the building envelope in new and renovated
buildings, though they lead to increasingly airtight buildings.
Moreover, the sharp decrease in the required heat load transferred
by transmission leads to a reduction in the building’s energy
demand.
In this kind of environment ventilation acquires un ever increasing
importance in order to ensure ideal comfort, indeed:
▶
indoor pollutants may be trapped inside homes
▶
much more dangerous outdoor pollutants introduced without
any kind of ltering and purifying treatment can be even more
harmful
▶
the energy transferred outside during air renewal is always the
main factor in terms of the building’s energy demand
Fresh and clean air with ecient energy recovery
There is not real comfort with out a proper air renewal rate as odours and harmful substances accumulate inside the house, too.
Therefore, the new building trend illustrated above, which focuses on a considerable improvement of building envelopes, requires a
controlled mechanical renewal system for ambient air to ensure the desired renewal values.
However, introducing fresh air directly is not always a healthy option and involves high energy costs.
Indeed, usually the air we eject has a high energy content that needs to be recovered, though without aecting the systems’ overall
eciency.
Indoor pollutants aect our health and buildings
Outdoor air contains pollutants that are more dangerous, such as particulates and ne
dust, pollen, bacteria and so on.
These aect our health in many ways, including coughs, respiratory diseases, often
chronic, increase in susceptibility to infections, problems to the cardio-circulatory
system.
Outdoor pollutants are more dangerous than indoor ones
Indoor activities generate many pollutants, only some of which are evident as they are immediately perceivable (odours, humidity,
smoke).
In actual fact there are many more sources of pollution that we often do not notice
straight away, such as construction materials, furnishings, dispersed dust, mould and
micro-organisms, cleaning products, carbon dioxide to name but a few.