Is your cucumber bitter? Throw it away. Are there briars in your path? Turn aside. That is enough. Do not go on and say “Why were things of this sort ever brought into this world?”

moving to https://discuss.tchncs.de/u/skillissuer

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Joined 1 year ago
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Cake day: June 12th, 2023

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  • in poland specifically:

    • if you want to sell energy to grid, terms absolutely suck
    • grid is often overloaded in the summer in areas with large # of pv installations, meaning too high voltage, meaning inverters shut down;
    • there was a years long robocall campaign that sold these installations. pv installations are subsidized so more people could set it up and middlemen like this appeared

    if you want to reduce your carbon footprint, or you want to use it all without selling energy, or such, you’ll be fine. if you believed robocalls that say that it will get you net passive income from that, tough luck

    if you want to get a better deal, get solar water heater. it works always if there are no clouds, even in winter you can get 40C on a clear day





  • No. Haber-Bosch process is very mature by now and it doesn’t take much more energy than thermodynamically necessary to do so. You get there by recycling heat and reusing energy of compressed gases. The actual problem is getting that hydrogen in the first place

    If you want to use hydrogen as a fuel anyway, you can add that little overhead and get fuel that you can either burn in ICE or go the whole nine yards, crack it back into elements and put that in fuel cells, and, more importantly, this comes with massive advantage of ammonia being about as easy to liquefy as propane, and we already have propane fuelled cars. Energy density is vastly higher than hydrogen this way, less than propane, sure, but it’s something

    Another option is dimethyl ether, but this thing needs to take carbon from somewhere, just like methanol