Hi , i have a question regarding reducing excessive air flow through a floor vent in a trailer home, the vent is not part of a duct system it is cut directly into the floor. I am trying to find a way of reducing heat loss through excessive movement of air through the vent, there are other vents in the wall which provide clean air to the interior.
The vent in the floor is designed to remove waste gas (LPG) it is not required to provide clean air to the building interior.
The vent is cut into a timber floor and consists of a grill, the grill just vents to the outside.
The floor is suspended about 60cms from the ground and is open to external elements, primarily wind passing beneath the structure.
Because the vent is floor mounted and is designed as a safety measure to remove LPG gas waste etc the vent cannot be blocked or covered to reduce air flow.
My understanding is that as the wind speed beneath the floor increases then so does the amount of air it draws through the vent ( i presume this is because of the difference between internal and external air pressure)
Is it possible to fit something beneath the floor (and the vent) to reduce the effects the high wind speed would have on drawing air from the internal space, without reducing the removal of waste gas from the LPG heating system?
I am trying to find a way of reducing the amount of air being drawn through the vent in high wind conditions to the floor space below, while still maintaining safe ventilation of waste gases.
Thank you in advance for your informed replies.