How many watt hours does you motor burn if left running overnight? Yes I know it depends on the load and the speed.
If I did the math right and did not drop a decimal point, I think roughly 1 WH will heat a liter of water 1 degree C. Let's say you have a 100W motor running 8 hours that is 800 WH and you would expect to heat a four galon (16 liter) tank to 50C over ambient enough to burn your fingers and soften plastic hoses. When I ran my water cooler I used an old 50 gallon aquarium tank. Even with 50 gal. it would heat up overnight. It is pretty easy to nearly boil a bucket of water in 8 hours even with a small 100W heater. Even with a 50 gal tank I use a fan to blow air over the top of the tank. A primitive evaporative cooler. We were doing about 100 to 120 watts with 8 to 12 hour runs. Others were using trash cans filled with water but I just happened to have an old 50 gal tank. Do you have a water meter? I'd put one of those meters on the motor and calculate water heating. I On Wed, Nov 18, 2020 at 7:34 AM Gene Heskett <ghesk...@shentel.net> wrote: > Greetings all; > > Leaving it run at 4g's overnight wasn't quite the result I expected. > > Going out to check on it and work on the BS-1 project, I could feel the > heat on my face from 3 feet away, but it was still humming along at > 4g's. No smoke. But the hoses on top of the motor were melted, for > about 3" away from the spigots on the motor. And the tank had lost 3 of > its 4 gallons of water with no sign of where it went, nothing wet so it > either came out as steam, or it melted the hoses quite early and its had > time to dry. Shut it down. Tank is cold. Pump lost prime for lack of > water at the intake. > > I think I can say that experiment was a failure. But the motor still runs > whisper quiet. And it looks like I need to get another big coil of hose, > or figure out how to pull at least 6" thru the cable chain to reach the > motor with "good" hose again. Plenty of spare at the tank end of the > run. Sigh... It, and the motor mounts, will have to await the arrival > of the better motor. > > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
