Comments by "SeanBZA" (@SeanBZA) on "Two Bit da Vinci"
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@TwoBitDaVinci Drilling a deep well will be better energy wise over trying to condense water out of the air. Your dehumidifier can be the house AC system, with condensate water going into your grey water system, but just cooling air to condense water is a massive energy hog. Better to drill down a deep well, get the local (probably polluted with all the industrial waste residue, if you are in an area that has had any heavy industry nearby in the last century) water table, which is stored in the soil from rainfall, and clean and use that. Otherwise you will simply double the energy you will need from solar panels, for only a small amount of water, that will still need to be filtered and cleaned to make it drinkable. Deep well with a pump requires a lot less power per litre of water than any AC condenser can ever achieve, and even with solar power it works out cheaper.
If you want water from air put in a solar distillation unit, to get fresh water from the grey water instead, which will be much more energy advantageous to do.
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@TwoBitDaVinci It uses the magnet inside the meter that is rotated by the positive displacement pump in the meter. The pump turns one roatation for ever so much volume of water that goes through, and then this is divided down by a gear train to drive a rotating flag, blue on your meter, red on others, that turns the main gearing of the totaliser. The flag typically rotates 10, or some whole number, of revolutions per gallon of water. Here by me the metric meter is 200 revolutions per kilolitre (1000 litres, roughly 285 gallons US) on most meters. Sensed by either a reed switch or a hall sensor, outside the case, there for smart meter use, and then sent via the wireless link to some server, to update your account every few minutes as to water use.
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GM is going to go the way of the dodo soon. not because of EV's, but because they just make junk, and those competitors, who they use for manufacturing under the GM brand, are going to decide that they do not want to get all the work and worries, and none of the profit, and start doing direct sales. Then they will also stop supplying GM, and they will vanish as a footnote.
Same with Ford, they are deciding to go with compensation size trucks, and that market will be eaten soon, and with the next round of fuel increases, simply evaporate. There will be huge lots filled with brand new Ford trucks parked next ro the rusting brand new Hummers, and GM cars, waiting to go to the crusher to come back as a Chinese made vehicle.
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If you have a nuclear plant, you can use the waste heat to boil water, to desalinate it, though you will only boil off enough to double the salinity, for technical reasons, but this will still use the waste heat and produce all the fresh water the reactor needs, plus a lot more for export along with power. Not enough energy in the low temperature steam, you want steam at 300C plus to gain useful work, and will condense it down when it is at around 150C, which will still allow you to boil sea water, though as above, with less efficiency.
Not enough useful energy in that steam, which will be very wet, to actually do useful work, and you will be needing to use heat exchangers on the incoming salt water to both condense the reactor turbine steam, and the evaporated steam, so as to actually gain efficiency, by using the first heat exchanger to boil the water, and the second one to warm the incoming water a little, with a third one to cool the outgoing water and add some of the energy to incoming water, so you lessen the energy to get it to boiling, though the biggest heat need is to evaporate that sea water to a wet steam. Basically making your inlet water be at 90C, close to boiling, so you get maximum energy transfer, and you get 95C primary water out, which uses another heat exchanger to cool down to around 50C, for the run through the boilers again. Complex, lots of pumps but will give large amounts of reasonably low salt water, not going to be distilled, but definitely equal to river water in salts in it.
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For clothing how about that free drying that a clothes line provides. Pretty much zero running costs, and you definitely have the room to put the lines up, plus an added benefit that your clothes come off the line almost wrinkle free, less of the ironing chore, and for many fabrics no ironing at all, plus longer clothing life. Clothes lines last for decades, with almost zero maintenance costs other than the occasional line replacement, and by me the sun shines all year round as well, so zero operating costs as well. BTW clothes also dry on the line at night, even without the sun, so hang in the evening, and fetch next mid morning all dry, unless it rains.
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@TwoBitDaVinci Well, 10 year old black shirts, not the best quality, just cheap ones for work use, are still surviving, they wear out from use before fading much. As well simple to fix, dry inside out, that way no chance of bleaching. Dust is not a problem either, just a shake out gets it off, plus sets the fabric, and you fold it before putting in the laundry basket, so that it is almost ready to put away, and thus no creases. Less wear with a line than a drier, as the drier turns your clothing into a thick layer of felt in the filter while it is running. Just have to buy clothes pegs, preferably bamboo ones, as they do last longer. plus sheets and such are so much nicer after a sun dry, and you can also have rugs washed by hand as well, then hang to dry.
Sold the drier years ago, seeing as it was last used last century...... and only then if the cloth nappies could not be dried in time because of rain.
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