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My plan is to have a heat exchanger to help with this, which will also improve the situation much more on very hot and very cold days when I can't keep windows

My plan is to have a heat exchanger to help with this, which will also improve the situation much more on very hot and very cold days when I can't keep windows wide open.

throwaway290 3y ago
Don't know what a heat exchanger is. Where I am currently extractor fans seem to be part of building code and now I can't imagine living without one
- onetimeuse92304 3y ago
  Heat exchanger blows outside air in and inside air out. Both air streams are flowing through the box in opposite directions, without mixing, so that outgoing air heats up and gets cooled by incoming air (assuming outside is colder than inside). These devices can be extremely efficient as they can recover something like 80-90% of energy. In my case I am not necessarily looking to save up more energy, I am interested in being able to ventilate the apartment better without breaking the bank on energy.
  - throwaway290 3y ago
    Cool device. But if your nights are slightly colder and days slightly hotter and humidity is so low then why be so complicated? You don't need heating, don't need AC... unlike tropics with constant +30 and 90% humidity or snowy places where it's -30 in winter, seems like you can just ventilate See this cool chart btw: https://drajmarsh.bitbucket.io/psychro-chart2d.html https://drajmarsh.bitbucket.io/psychro-chart2d.html (pick your place, select comfort overlay -> Givoni and it will show what you need to be in comfort zone in a given month based on temperatures and humidity)
    - onetimeuse92304 3y ago
      Because we have winters? Like -20C? And then just opening the window to keep the apartment well ventilated is no longer very practical when you ask for a latte but get frappe if you don't drink it immediately...
      - throwaway290 3y ago
        Oh, I thought the weather you described was year round... Yeah heat exchanger sounds really cool. From Wikipedia, are they those big industrial things for houses? or can you fit a flat with it, like a window unit or something?

My plan is to have a heat exchanger to help with this, which will also improve the situation much more on very hot and very cold days when I can't keep windows wide open.

throwaway290 3y ago

Don't know what a heat exchanger is. Where I am currently extractor fans seem to be part of building code and now I can't imagine living without one

onetimeuse92304 3y ago
Heat exchanger blows outside air in and inside air out. Both air streams are flowing through the box in opposite directions, without mixing, so that outgoing air heats up and gets cooled by incoming air (assuming outside is colder than inside). These devices can be extremely efficient as they can recover something like 80-90% of energy. In my case I am not necessarily looking to save up more energy, I am interested in being able to ventilate the apartment better without breaking the bank on energy.
- throwaway290 3y ago
  Cool device. But if your nights are slightly colder and days slightly hotter and humidity is so low then why be so complicated? You don't need heating, don't need AC... unlike tropics with constant +30 and 90% humidity or snowy places where it's -30 in winter, seems like you can just ventilate See this cool chart btw: https://drajmarsh.bitbucket.io/psychro-chart2d.html https://drajmarsh.bitbucket.io/psychro-chart2d.html (pick your place, select comfort overlay -> Givoni and it will show what you need to be in comfort zone in a given month based on temperatures and humidity)
  - onetimeuse92304 3y ago
    Because we have winters? Like -20C? And then just opening the window to keep the apartment well ventilated is no longer very practical when you ask for a latte but get frappe if you don't drink it immediately...
    - throwaway290 3y ago
      Oh, I thought the weather you described was year round... Yeah heat exchanger sounds really cool. From Wikipedia, are they those big industrial things for houses? or can you fit a flat with it, like a window unit or something?