Automatic air inlet V40P
through continuous, automatic regulation of the flow channel size, provides the
optimum amount of air into the room, providing a healthy microclimate in the
attic and saving thermal energy. The V40P ventilator is a standard solution in
FAKRO roof windows. You can live healthy and pay smaller bills for heating, and
spend money saved for any purpose.
Automatic air inlet V40P
through a continuous, automatic volume flow control provides the optimum amount
of air into the room providing a healthy microclimate in the attic and saving
thermal energy. The V40P ventilator is a standard solution in FAKRO roof
windows. You can live healthy and pay smaller bills for heating, and spend
money saved for any purpose.
In the past, the inflow
of air provided leaks in windows and doors, thanks to which gravity ventilation
systems could function properly in order to ensure the exchange of air in rooms.
However, the inflow of air through the leaks was uncontrolled, which caused
large heat losses and high heating expenses. Modern construction is
characterized by increased tightness of woodwork, which reduces heating costs
but limits the inflow of fresh air into the room. The microclimate in
residential buildings is clearly deteriorating. Caring for a healthy
microclimate, we must ensure the inflow of fresh air into the interior. Currently,
this is done by deliberately unsealing windows, ventilators in windows, or
mechanical ventilation systems. At the same time, we want the house to be
energy-efficient and cheap to operate. Unfortunately, during the winter even
the best insulation will not completely prevent heat losses. It penetrates
through partitions (walls, windows, roof, floor), but the most heat - up to
35%, in the form of heated air is led out through ventilation lines.
In the gravity
ventilation system, fresh air flows through the diffusers into the room due to
the pressure difference between the room and the environment. The pressure
difference depends on the temperature difference and the wind gust force. In
winter and during windy weather, the same hole in the traditional air inlet
passes several times more air than in normal conditions. This causes the inflow
of cold air in an amount exceeding the recommended values several times, resulting in
chilling the room. The automatic air inlet V40P used in FAKRO roof windows,
regardless of the pressure difference and the size of the wind gust, always
allows the same, optimal amount of air into the room. It protects against
cooling the room, which significantly reduces heating costs.
The research shows that
one automatic diffuser installed in the FAKRO roof window saves about PLN 50
for one heating season. Assuming the average price of a window with a V40P
ventilator for PLN 1,300, the cost of a window returns after 26 years. Automatic
air inlet V40P in FAKRO roof windows is a healthy microclimate and real thermal
energy savings.
Principle of operation
of the V40P ventilator
The capacity of the V40P
diffuser increases with the increase of the pressure difference outside and
inside the room, until the optimum value is reached. With a further increase in
the pressure difference, the air flow is kept constant. The air compressor,
known as the air in the diffuser deflects, reducing the cross-sectional area of
the channel, limiting
the amount of air flowing. This is the case, for example, in sudden wind gusts
and in winter.
