This isn’t just mildly interesting. We should be considering methods of air cooling that do not use any carbon in order to avoid aircon usage becoming a contributor to the climate problem as things get hotter and hotter.
I agree we should have more passive forms of cooling/heating.
But I think the problem is that often these are highly dependent on the environment and are very situational.
Places that are dry and hot benefit from water and internal ventilation like this, because the perspiration and water evaporation naturally cools things down, just like our sweat does (same principle that refrigerates water in clay pots like Spanish botijo, or what makes central gardens inside buildings very common in some areas). But they need to stay dry and hot for systems like this to make sense… a cold and humid year would make this whole design pointless at best, counter productive at worst.
I agree with you that we should be exploring alternatives, but aircon is extremely energy efficient for how much thermal energy it moves (reaching 400% efficiency in some cases) . The problem isn’t aircon itself, but what is being used to power it (coal/natural gas power plants)
In fact the technology behind aircon can be expanded into a heat pump to both heat and cool, being more efficient than electro-resistive or gas heating. There’s even water heaters that will actually cool the area they’re in and use the heat they gather from the space to heat the water.
Technology Connections has a great series of videos that go in depth on both heat pumps and aircon.
This isn’t just mildly interesting. We should be considering methods of air cooling that do not use any carbon in order to avoid aircon usage becoming a contributor to the climate problem as things get hotter and hotter.
I agree we should have more passive forms of cooling/heating.
But I think the problem is that often these are highly dependent on the environment and are very situational.
Places that are dry and hot benefit from water and internal ventilation like this, because the perspiration and water evaporation naturally cools things down, just like our sweat does (same principle that refrigerates water in clay pots like Spanish botijo, or what makes central gardens inside buildings very common in some areas). But they need to stay dry and hot for systems like this to make sense… a cold and humid year would make this whole design pointless at best, counter productive at worst.
I agree with you that we should be exploring alternatives, but aircon is extremely energy efficient for how much thermal energy it moves (reaching 400% efficiency in some cases) . The problem isn’t aircon itself, but what is being used to power it (coal/natural gas power plants)
In fact the technology behind aircon can be expanded into a heat pump to both heat and cool, being more efficient than electro-resistive or gas heating. There’s even water heaters that will actually cool the area they’re in and use the heat they gather from the space to heat the water.
Technology Connections has a great series of videos that go in depth on both heat pumps and aircon.