jaxdraw
jaxdraw t1_j4mkh91 wrote
Reply to comment by nakrimu in How do non electric heat operated fans work? by ranman12953
I did previously because the motor had to be cranked to start. Now the fan shaft seems to oscillate no matter how I tighten it down
jaxdraw t1_j4mi9cl wrote
Most wood stove fans rely on something called the Seebeck effect. The Seebeck effect is the inverse to the Peltier effect, and the two are often discussed in tandem.
In lay terms you can draw a small amount of voltage from the movement of heat. On a woodstove this is accomplished by having a large surface area in contact with the metal of the wood stove. The top of the stove fan is usually thinner, with fins or a grid to assist in drawing up and radiating the heat away from the surface of the stove. In the middle of this temperature gradient is a wafer of material with wires inside of it, known as a thermocouple. As the heat is conducted from the stove and up the stove fan the heat gradient produces a small amount of electricity that is captured in the thermocouple and transferred to a small motor that powers the fan blades.
The process is wildly inefficient for most other practical applications, however for something like a woodstove the intent is to direct some of the radiant heat forward via convection. Any loss in efficiency is in the form of radiant heat, so it's not a loss in the sense that the stove is still heating/warming a given area.
jaxdraw t1_j4mdmu3 wrote
Reply to comment by nakrimu in How do non electric heat operated fans work? by ranman12953
Any tips on reducing fan noise? I've had one for about 5 months and it produces an audible sound now when it spins. Was debating using w40 or some other lubricant to grease the propeller shaft.
jaxdraw t1_j3z3jqy wrote
Reply to Nathan Sterner WYPR by [deleted]
I thought I was going crazy when I heard it. Wow, good on ya Ashley!
Now, let's head over to Matt Tacka with traffic*
*I know he doesn't do traffic anymore, but that's what popped into my head.
jaxdraw t1_j178woi wrote
Reply to Never thought Iād see the Highlandtown Walgreens on Reddit, but here we are. š by TopS3cr3t
1....2.......3......4.......5......6.......7 there he go
jaxdraw t1_j0jf8c9 wrote
Reply to Anyone remember Blob's Park? by FelDeadmarsh
I worked at ft Meade when they were open, went out for many social events there. Great polka. I miss it, and the people I worked with then.
jaxdraw t1_iy8l90i wrote
Reply to Another stellar ad from VisitBaltimore. Just a reminder that the CEO makes $400K a year. by Cepia
I'm fairly certain they don't make guiness stout in the Baltimore facility
jaxdraw t1_iugrifp wrote
Reply to Happy Halloween! by joshsundquist
angry storm breaker noises
jaxdraw t1_itnowtu wrote
It's crazy how many dirt bikes I've seen in the city. I grew up in Frederick county and we had ATVs, dirt bikes, golf carts etc.
They were common but it seems like they are all the rage in Baltimore the prince George's county.
It's fascinating to me
jaxdraw t1_is34791 wrote
Reply to comment by Chlorophilia in Does the salinity of ocean water increase as depth increases? by rhinotomus
Are tidal forces completely absent at depth? I would have assumed that water, being non compressible, would be impacted throughout based on tidal forces.
jaxdraw t1_j9dsehi wrote
Reply to Hospital fee to see a dermatologist at John's Hopkins Outpatient facility? by HombreDeCamote
$50 payment to the building, $50 payment to a specialist (my insurance waives the specialist bill if my primary does the referral, but it costs me $30 just to see him and I'd rather save my time than $20).
Oh and they charge like $15 for parking.