ventilation

Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems. It refers to the flow of external air to an indoor space as a result of pressure differences arising from natural forces.
There are two types of natural ventilation occurring in buildings: wind driven ventilation and buoyancy-driven ventilation. Wind driven ventilation arises from the different pressures created by wind around a building or structure, and openings being formed on the perimeter which then permit flow through the building. Buoyancy-driven ventilation occurs as a result of the directional buoyancy force that results from temperature differences between the interior and exterior.Since the internal heat gains which create temperature differences between the interior and exterior are created by natural processes, including the heat from people, and wind effects are variable, naturally ventilated buildings are sometimes called "breathing buildings".

View More On Wikipedia.org
Recent contents Top users
  1. 2

    MG4 & 5 Ventilation

    I have noticed a lot more interior condensation in my 4 and 5 than other cars I have owned. I have discovered that a lot of this is down to fact that after using the windscreen quick demist or in fact just using the fan on a low setting the ventilation set up defaults to re-circulation mode...
    • 2MG
    • Thread
    • condensation demist interior mg4 recirculation ventilation
    • Replies: 27
    • Forum: MG4 EV Forum
  2. E

    HVAC system

    Got a few questions about the MG ZS EV heating and ventilation system. I know air conditioning should be used for cooling the car but should you have it on when heating as well? Or just use the heating controls. Is the PM2.5 filter work on all settings or do you need to have air conditioning...
  3. fshuk1

    Humidity on the inside of front screen (merged)

    [ Moderator: There seem to be a lot of threads on misting at this time of year. I may merge more threads here later. ] I was wondering if anyone else is suffering from humidity on the inside of the front screen. I am not talking about misting, which is usual. Every morning the car has...
    • fshuk1
    • Thread
    • fogging mg4 mg4 xpower misting moisture screen ventilation
    • Replies: 35
    • Forum: MG4 EV Forum
  4. NeFo

    Ventilation / Condensation

    i drive an MG5 LR pre-facelift. in the recent cold damp weather, all the windows have been steaming up quickly. Wiping them with a variety of cloths & sponges mostly just smears them. The only thing to work is using the windscreen fan, but once i turn that off it steams & smears again quite...
    • NeFo
    • Thread
    • condensation mg5 ev smearing steaming up ventilation windows
    • Replies: 24
    • Forum: MG5 EV Forum
  5. B

    getting air flow into the cabin without the fan operating?

    When driving the car along, is it possible to get air flow into the MK1 ZS EV without opening a window and getting "ear drum buffering" or running the power hungry fan? If not, is it the same issue with the MG5? even with the sun roof tilted in the ZS the cabin gets stuffy, especially in the...
  6. Alb

    Curious behaviour

    Purely by chance I happened to notice this bit of information in the manual when I was looking for something else. Can anyone confirm that the ZSEV actually does this?
Back
Top Bottom