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Joined 6 months ago
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Cake day: March 20th, 2024

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  • So the common plastic pump you see in every soap dispenser has two parts - the part you screw onto the soap container, and the piston thingy, above that, that you push down to get the soap to spurt out of and into your hand.
    If you put something above the screwy part, on the lowest part of the piston, you reduce the amount that the piston goes down. And reduce the amount of soap that can come out.












  • There are ‘hybrid’ heat pump mini splits (for air conditioning / cooling) that take both AC and DC input. (See airspool, EG4, and hotspotenergy)

    All of these are configured to have dc compressors and AC to DC inverters.

    If you have a hybrid system, you either take the conversion losses on the AC or DC input.
    For aircon, having the losses on AC to DC conversion makes the most sense - if it’s hot out, it should be bright out and there should be plenty of DC solar output - and topping off with a little AC and taking a loss should be fine.

    I don’t think this is the case with water heaters on average - if it’s cold and cloudy or night you’re still going to want hot water. I think it makes sense if you’re in the desert - but most people are not going to be. So don’t think this will be done commercially