That’s almost too good.

With only intermittent full sun…

…I ran water into a bucket and onto the thermocouple wire…

…with visible steam coming out of the bucket and a temperature reading almost 30 degrees higher than the highest ever recorded.

Yeah – the cover had a dramatic effect.

About Joel

You shouldn't ask these questions of a paranoid recluse, you know.
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11 Responses to That’s almost too good.

  1. JayNola says:

    Almost like a greenhouse effect?!?😏

    I’ll see myself out…

  2. R says:

    You could probably get even higher on days with less sun using coated low-e glass that would reflect the IR radiation back in.

    Since I’m not working at the glass fabricator any more or I don’t have to figure out sending a very fragile care package.

  3. Ben says:

    Actually R, I’m afraid that Joel might have to figure out how to to make the thing work less well, especially in the summertime.

  4. Mark Matis says:

    Wonder how long it would take a bambulance to get out there if he scalds himself badly enough???

  5. Judy says:

    Mark – He doesn’t want to do that. My Great-Grandmother died from the injuries of dumping a wash-boiler of water on herself.
    Joel – Laddie got added to the sidebar! Wahoo!

  6. mattexian says:

    I’m kinda glad I didn’t suggest the other day painting the inside of the box black too. I started wondering if it could actually get hot enough to boil the water inside the hoses, then recalled my own experiments with a solar oven, so 212+F, possible, even likely. That idea of running that into a small water heater tank with a steam release valve might be a good safety plan.

  7. Kentucky says:

    Might easily be hot enough to soften the hoses so they expand and blow off their fittings. I’ve seen that happen.

  8. DL says:

    This will not end well.

  9. How are you keeping from introducing air into your line? By keeping it hooked up to a pressurised line?

    I think Kentucky has a good point. Hose clamps at the fittings might give you some insurance there.

  10. Malatrope says:

    Do be careful, Joel. You may have to put holes in the sides of the box to ventilate it. I built a similar thing out of wood, while living in Florida, and it caught on fire. A measurement after I rebuilt it showed that, if I wasn’t actively flowing water to pull out the heat, it would get up to 400F (pizza oven temperatures).

    The water will boil, and with no escape for it it will blow the hoses. I would seriously consider setting up a small pump to circulate the water through an old water heater tank. Otherwise, this collector probably isn’t going to last long in the Arizona sun (which is hotter than Florida).

    I don’t know how the glass is tied down, but sliding it down to leave an inch or two open at the top might work to cool it down a bit.

  11. Ben says:

    Yea, I was thinking Joel could drape some of that camo shade material he used to use for his chickens, just for the summer months. Also his temperature probe could be used to read the temperature inside the box.

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