Recent content by D-C

I see Word's point better. Got thrown back with mention of a bunch of them. A Hubble quility scope, say we could position one ten light years out. It's radio signal taking as long to return might provide, (for our great grandchildren), actual images of Earth twenty years ago for them. Granted...

Interesting thought that. If you had a mirror, or mirrors, or anything that turned light around "however" far away, you could see light from Earth "however" long ago it took to make the trip out and back. Isn't some of the moon's glow at eclipse, "earth history?"

You wrote; "the kinetic model the molecules of the gas continue collide with the cylinder wall" Maybe it would help to remember the molecules are also colliding with each-other.

It (has been) a common practice to use steel (usually galvanized), water pipes a grounds for a home electrical supply. (Clamp/connectors are sold for the purpose). You might be describing a case of someone hooking a ground to a gas pipe, not knowing, (or maybe not caring), that it's a gas supply...

So if it's a given that 60 what's is attainable with the Ametek 18 Volt generator with that ,^ jet, and that ,^ graph, I need to calculate wheel size to accommodate, let's say 2200 RPM. So with 2,354 Ft/Min, (Wheel velocity at the circumference), what size wheel will rotate at 2,200 rpm? OK..C...

Power output of Ametek 38Volt Motor/Generator I've been trying to figure how to present the graph, maybe this PDF... OK! Ignore the red square. I can in no way verify it's accuracy. He does seem competent though.

Power output of Ametek 38Volt Motor/Generator. OK, I found a guy's PDF of a graph for the Power output of Ametek 38Volt Motor/Generator. Pretty much linear. Watts up to 100, RPM over to 3000. He shows what looks like a “sweet spot”, (slightly steeper line), with 520 ohm's resistance and...

Posted above; “””For your water source, 12 gpm is 1.668 lb/sec. Multiplied by your height gives 130.9 ft-lb/sec or 0.24 hp or 177.6 Watts. If you do a spectacular job of recovering this energy, you might achieve an efficiency of 50%, or 88 Watts. So you'll want to get at least double what...

4708 feet is the length of a cylinder ¼ inch in diameter “encompassing” 12 gallons. “Transiting” the nozzle in one minute gives me a jet velocity of 4708 ft./min. A 5 ¼ in. impulse wheel would rotate at 1,714.5 RPM to receive the jet at ½ the jet velocity. Can I “reverse engineer” (for lack of...

Still getten my facts straight. I'm going to need jet velocity with a 1/4" nozzle, @ 32psi, (dynamic). The impeller should recede at 1/2 Jet V , leaving the, "tail-water" with no momentum. This is close to my layout, (without the moss and frogs!)...

Can an aging element offer less resistance, causing higher current flow..until it trips the breaker? If it's a "U" shape and rusting...you might just take a look at it if you are so inclined. Your juice might be taking a short cut! And, yes, heat from resistance in a bad connection will conduct...

Great, thank you Russ! That link is a mouthful. I'll read that through, and also put together better info for the "hardware". Meantime: I have a couple different permanent magnet DC motors. (one can be fixed up while the other is wearing down). I just make the jet as big, and fast as I can...

Hi all. I'm feeling a little new here. Here's the deal. Question involving my micro-hydro installation. Pretty basic in this crowd I would guess but a chore for me, and am not sure the numbers I come up with end up making practical sense. I've been tinkering with it for years, but still seem to...