5 ms·

Interesting. Something like this: https://www.researchgate.net/publication/281902445_Two-stage_evaporative_cooling_systems_in_hot_and_humid_climate https://www.

• hgomersall 4y ago
  I don't think so, though I did struggle slightly to understand the schematics. That system still seems to humidify the incoming air, just in two stages. I might have missed something though. The point is if we don't care about losing the water to the atmosphere (in climates where water is not scarce), we don't need a closed water cycle. For your house outflow air, on the psychrometric chart, you follow the isenthalpic line with evaporative cooling as far as though can (the diagonal lines from bottom right to top left ending in the wet bulb temperature, which is adiabatic in our case since constant pressure). This gives the temperature on the cold input side of the heat exchanger, which cools the incoming air, which will have an increase in RH, but only due to temperature change. I posit the system would work well to reduce uncomfortable temperatures to be more in normal range in temperate climate extremes. I found one company that supplies exactly what I'm talking about: https://www.homevap.nl/en/overzicht-koude-bevochtiging/homevap-koeler/ https://www.homevap.nl/en/overzicht-koude-bevochtiging/homev... though I'm tempted to try something homebrew using a piezo water mister.