P30 Ventilation Elsna:Layout 1 28/01/2021 14:52 Page 30 Ventilation Conservatory ventilation in winter
Ventilation has several roles to play in conservatories and buildings with glass facades. While air exchange can be achieved naturally via windows, fan ventilators score points thanks to their recirculation function, burglar resistance and reliability in all weathers. Elsner Elektronik explains more.
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n addition to shading, correct and adequate ventilation in a conservatory or is imperative to ensure that a
conservatory or a building with glass facade does not accidentally become a greenhouse. At its simplest, ventilation takes place via windows and roof vents. But this ‘natural ventilation’ is not always possible, particularly if the building height is low, which makes natural air circulation insufficient. Open windows also encourage intruders. In these cases, motorised fans mounted in the roof area provide a pleasant climate. Air is extracted (exhaust) or recirculated (recirculating air). Vents in the floor let fresh air flow in again. Ventilation has a number of functions in both
conservatories and in buildings with glass facades. It can be used as part of an automatic climate control system to regulate the room temperature and humidity, and can also help to maintain good air quality. CO2 levels and germ contamination are both
reduced by regular air exchange. To ensure air in a conservatory or glass sided building remains "fresh", Elsner Elektronik advises installing a carbon dioxide sensor in addition to a thermo/hygrometer, which are included in conservatory control systems such as the WS1000 Connect. The combined sensor with temperature, humidity and CO2 measurement is available from the same manufacturer, replacing the standard sensor to ensure that additional automatic ventilation is provided if the CO2 levels in the building becomes too high.
The exhaust air and recirculation modes of the WL800 ensure a balanced climate in a conservatory.
In winter gardens and indoor botanical
gardens, condensation on the panes is another issue that can also be avoided with proper ventilation. Air circulation transports the moisture away from the pane to create a clear view through the glass. In addition, circulation improves the heat distribution in the room, which is a particular problem in conservatories that extend over two storeys, which otherwise remain warmer upstairs than downstairs. In the
cold season, the heat from the ridge area is valuable and should not be dissipated but distributed throughout the room or building.
Fresh air flows in through the supply air unit WL-Z.
Air circulation While air exchange can be achieved naturally via windows, circulation is one of the advantages of blower fans - models such as the WL400 and WL800 from Elsner Elektronik have both an exhaust air mode and a recirculation mode. The fans are installed in the conservatory roof like a pane of glass, and with their restrained design, colours that can be ordered individually and a very low noise level, are ideal for living spaces. A further positive of motorised ventilation includes the fact that, unlike skylights and windows, there are no unprotected openings. The ventilation units do their job even in rain and strong winds. What’s more, unlike windows, they are not a potential entry point for thieves - not to mention smaller ‘intruders’ who are repelled by insect or pollen screens on the supply air unit. By blowing the air out with the exhaust air unit, the air exchange is ensured regardless of the thermal conditions in the room or air movement outside. While the exhaust air is being blown out, fresh air flows in automatically at the supply air unit. Ventilation units are a safe alternative or a helpful supplement for a good climate in the winter garden.
30 | electrical wholesalerFebruary 2021
ewnews.co.uk
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