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Re: Smokeless Outdoor Wood Boiler

Discussion Board - Thu, 10/30/2014 - 21:32
I'm using a antifreeze mix to prevent freezing. Now that I've gotten the two stage heating done, I plan to insulate the pipes as there is a calculated 1400 BTU an hour heat loss when it is really cold, less when warm. I'll use fiberglass insulation enc...

Re: Smokeless Outdoor Wood Boiler

Discussion Board - Thu, 10/30/2014 - 20:56
How will you handle freezing?  It looks like in the cold weather there would be lot of heat loss with the exposed pipes.  My dads is incased and insulated and then ran underground. 
Good luck
gww

Re: Smokeless Outdoor Wood Boiler

Discussion Board - Thu, 10/30/2014 - 20:05
I've now added a copper coil that creates two stages of heating. The cool side enters the coil, preheating the water before going into the boiler tank. The water finishes heating in the tank, where it then goes to the heat exchanger.

Here's what the co...

Re: cooling fans & controls

Discussion Board - Thu, 10/30/2014 - 19:46
Quotemounting multiple fans on the lid blowing across the resistors  would be a better way to cool
I don't think that is an option.  At least not with this box.  There's just no way to get close to a safe clearance to the thing(s).  This may ...

Re: A look at Peltier cooling

Discussion Board - Thu, 10/30/2014 - 16:48
Sorry, there's no space for proper insulation or copper plates in between the heatsinks - the Peltier is 3.3 mm thick.

The "insulation" is an air space between the two layers of plastic: the Coroplast plate (luckily, the same thickness) has a square ho...

Re: cooling fans & controls

Discussion Board - Thu, 10/30/2014 - 13:51
Creating  gap around the lid will ruin airflow BUT mounting multiple fans on the lid blowing across the resistors  would be a better way to cool. As it sits one end of the resistor will be cool, the other end baked by the hot air that is being pushed l...

Re: A look at Peltier cooling

Discussion Board - Thu, 10/30/2014 - 13:15
you need the best insulation you can buy in between the heatsinks holding the Peltier. Try add a copper heat spreader to both sides then a larger heatsink, the cooler the hot side the better. You can also stack them to get deeper temperature gradients....

Re: A look at Peltier cooling

Discussion Board - Thu, 10/30/2014 - 11:18
That styrofoam is probably good for about R1.5 to R2 per inch.  It's cheap, but it's not very effective.  Going with better insulation will certainly make it easier to hold the cold.  No amount of insulation will improve your limited amount of cooling.

Re: 240 volt from a 120 volt Generator

Discussion Board - Thu, 10/30/2014 - 10:54
Quote from: Frank S on October 20, 2014, 09:41:38 PMHow about a transformer from a metal halide lamp fixture

Workes great for building a high voltage transmission system by taping into the start circuite, but do not ...

Re: cooling fans & controls

Discussion Board - Thu, 10/30/2014 - 09:31
Wow, clockmanFRA that is truly scary looking. I hope you were there when thing got smokin'.

Yes, what most concerned me about this was that seemingly the one flammable component, the fan, was on the top and probably too close to the elements.  In our c...

Re: Winpower turbine questions

Discussion Board - Thu, 10/30/2014 - 09:20
Congratulations for yours wincharger.
I'm living in Calgary,Canada

I have a 15 winchargers in my colection.
I would like to send u a few pictures and info about restored Winco wincharger .
My e-mail is it

(DamonHD: not a good idea to put email addr...

Re: Hello to all.. From FL

Discussion Board - Thu, 10/30/2014 - 08:42
Welcome ,
Sit and stay a spell 

Re: A look at Peltier cooling

Discussion Board - Thu, 10/30/2014 - 08:09
Now that's what I call upcycling!!

Re: A look at Peltier cooling

Discussion Board - Thu, 10/30/2014 - 07:50
Thank you

The idea to use the cabinet as a small beer / RedBull cooler came after I've read Madscientist267's original post a few months ago. The wooden cabinet was for free (I've in...

Re: A look at Peltier cooling

Discussion Board - Thu, 10/30/2014 - 07:09
Very well explained!
I have found that the solid state chillers do take quite a bit longer to cool things down.
I like you have found that using the ones that are rated for higher voltages are much easier to work with. I am currently gathering parts to...

Re: A look at Peltier cooling

Discussion Board - Thu, 10/30/2014 - 02:07
Hello everyone

I've tried myself to build a small, portable Peltier cooler for my car. Used a TEC1-12703 Peltier, 30x30mm, rated for 15.4V / 3.2A / 30 watt of heat.

After some unsuccessful attempts, found out the Peltier will not work with any sort of ...

Hello to all.. From FL

Discussion Board - Wed, 10/29/2014 - 22:29
Hey everyone,

I'd like to take a quick spot here to introduce myself.  My name is Adolfo, and I'm an electrical engineering student in FL.  I found this forum via online research for a power project that I'm currently working on.  You all have a ton of...

Re: 10 kW Ventera Rebuild

Discussion Board - Wed, 10/29/2014 - 19:30
Hey Corey, glad to see you're getting your Ventera back up and running.  I think we corresponded back when Elliott was still around.  Anyway, we just picked up our Ventera from Bill at the shop in Duluth after having some warranty work done, along with...

Re: Pocket Rocket Stove Project

Discussion Board - Wed, 10/29/2014 - 18:37
Don't weld galvanized. I've been sick from doing that. https://en.wikipedia.org/wiki/Metal_fume_fever
Feels like you have the flu, shakes and fever.
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