4 ms·

Tech Ingredients on YouTube built a dessicant-based air conditioning system with enough info to DIY one. https://youtu.be/R_g4nT4a28U https://youtu.be/R_g4nT4a2

• baxuz 3y ago
  Was just about to post this one. Amazing series.
• KennyBlanken 3y ago
  I can summarize that thirty minute long video in a few sentences: 1)Indoor air is pumped into the bottom of a vertical pipe serving as a poor man's cooling tower, with calcium chloride solution sprayed down against the room air flowing upward and back into the space. The solution is very hygroscopic. 2)The diluted solution is pumped through a solar water heater, and then into the top of a second, similar cooling tower; the hot solution gives up moisture to outside air and increases in concentration. 3)The still-warm solution is then pumped through a radiator to chill it, and then further chilled by another radiator placed at the top of a third vertical water chiller which acts as a swamp cooler, spraying water down into a pipe circulating outside air. I imagine there might be room for further optimization, like leveraging some of the heat from some other steps to pre-warm solution, etc - similar to how steam boilers use 'economizers' and such.
  • willcipriano 3y ago
    A key point at the end of the 2nd video, the test room doesn't get very cool.
  • Ballas 3y ago
    Thank you. I have decided not to watch anymore of their videos after a number of inaccurate statements made as fact that was disproven with a single Google search. If they are not even going to fact check things they state as fact, then I cannot trust anything they state, and so my time is spent better elsewhere.