Fan Driven by Heat
Dec 14, 2023 06:55:38 #
alawry wrote:
It's not a "hot air rises" thing nor a s... (show quote)
Thanks. If you were living the Middle Ages, you be hanged as a witch.
Dec 14, 2023 06:58:44 #
alawry wrote:
Thanks for that. It's nice to learn something every day.
Dec 14, 2023 07:49:25 #
jerryc41 wrote:
Thanks. If you were living the Middle Ages, you be hanged as a witch.
Or you would end up confessing to everything they accuse you of.
(A la Iron Maiden.)Dec 14, 2023 09:08:42 #
Stephan G wrote:
Or you would end up confessing to everything they accuse you of. (A la Iron Maiden.)
(A la Iron Maiden.)Yes!
Dec 14, 2023 10:44:40 #
It's definitely not a thermoelectric generator, which doesn't have blades. Sippyjug104 had it right. It's a fundamental principle of physics that heated air has more energy than cold air and heated air moves toward a cooler region. That air flow impacting on fan blades causes them to turn. Just like a windmill. The fan blades change the direction of the heated air impinging on the blades.
Dec 14, 2023 11:14:11 #
The first rule of nature I learned in a Heating and Air Conditioning School... "Hot goes to cold".
Dec 14, 2023 12:06:44 #
Manchester Brat
Loc: Manchester, Connecticut
jerryc41 wrote:
I bought one of these years ago for my wood stove. I don't understand how heat makes it spin. The hotter the stove gets, the faster it spins. How does it work?
Amazon doesn't offer an explanation.
Amazon doesn't offer an explanation.
The answer is hot air rises, and the hotter it is the faster it rises.
Dec 14, 2023 16:06:18 #
Many here really do NOT understand physics - any hot air rising would exert equal force on BOTH sides of the blades (which are PARALLEL to any rising airflow) - resulting in NO net torque and Zero rotation. This is totally different from the 'Christmas Pyramids" having fan blades PERPENDICULAR to the airflow above candles.
The thermopile/Peltier Junction to electric motor is the correct answer.
https://www.theblazinghome.com/how-do-heat-powered-fans-work/
https://myfire.place/how-do-heat-powered-fans-work/
https://fireplaceuniverse.com/wood-stove-fans/
The thermopile/Peltier Junction to electric motor is the correct answer.
https://www.theblazinghome.com/how-do-heat-powered-fans-work/
https://myfire.place/how-do-heat-powered-fans-work/
https://fireplaceuniverse.com/wood-stove-fans/
Dec 15, 2023 07:40:29 #
Real Nikon Lover wrote:
The first rule of nature I learned in a Heating and Air Conditioning School... "Hot goes to cold".
Yes, and there is no such thing as cold. It's just the absence of heat.
Dec 15, 2023 09:25:08 #
jerryc41 wrote:
Fudds 4th law of Physics: Anything that is HOT now will become COLD later.Yes, and there is no such thing as cold. It's just the absence of heat.
Just a matter of time.
Dec 16, 2023 09:34:31 #
Merlin1300 wrote:
Fudds 4th law of Physics: Anything that is HOT now will become COLD later.
Just a matter of time.
Just a matter of time.
Does that apply to the rich man who married a "hot wife"?
Dec 16, 2023 12:47:30 #
jerryc41 wrote:
Just like Jerry to accurately read between the lines.Does that apply to the rich man who married a "hot wife"?
Tho the wife may be Hot now, likely in 20 years she'll be 'cold'
Its a wibbly wobbly timey wimey thing.
Dec 16, 2023 14:02:19 #
Merlin1300 wrote:
Just like Jerry to accurately read between the lines.
Tho the wife may be Hot now, likely in 20 years she'll be 'cold'
Its a wibbly wobbly timey wimey thing.
Tho the wife may be Hot now, likely in 20 years she'll be 'cold'
Its a wibbly wobbly timey wimey thing.
That's why rich guys update all the time. Update rather than upgrade. The new ones aren't better than the old ones when they first got the old ones.
Dec 16, 2023 15:18:34 #
BebuLamar wrote:
I've been quite happy with my 'old one' for 40 years now That's why rich guys update all the time. Update rather than upgrade.
The new ones aren't better than the old ones when they first got the old ones.
The new ones aren't better than the old ones when they first got the old ones.
Dec 16, 2023 17:32:56 #
Merlin1300 wrote:
I've been quite happy with my 'old one' for 40 years now
I have been happy with mine. It will be 40 years in March.
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