Comment

Comment on solar PV → heat pump → water heater; direct, no A/C or intermediate components. Practical? Feasible?

evasive_chimpanzee@lemmy.world ⁨1⁩ ⁨month⁩ ago

occasionally heat the tank up to 70°C+ to kill off any bacteria that might be growing in it.

Is that a built in function of your fancy water heater, or is that something you just go do periodically as part of maintenance?

I’d love to get one of those heat pump water heaters. Seems like a win-win to dehumidify the space.

Sort:hotnew top

poVoq@slrpnk.net ⁨1⁩ ⁨month⁩ ago
It can be programmed to do so, but I disabled it as I am not particularly concerned about it, and the solar thermal vacuum tubes also connected to the same tank will occasionally push it to near boiling temperatures.

I originally also thought it would be useful to dehumidify the air, but in reality the times when you need to heat water and the same time have a humidity problem rarely overlap in my case. Maybe if you have a perpetually humid cellar that you don’t use much otherwise (as the exhaust air is quite cold) it would be a good addition.

source
- evasive_chimpanzee@lemmy.world ⁨1⁩ ⁨month⁩ ago
  
  occasionally push it to near boiling temperatures.
  
  So I’m guessing you have some kind of mixing valve set up to handle this going out? Also, are the tanks rated to that high of temperatures?
  
  source
  - poVoq@slrpnk.net ⁨1⁩ ⁨month⁩ ago
    Yes to both.
    
    source