[Stoves] TEGs

[Sluis, Paul van der]

Dear Stovers,

A few answers to the many questions (in random order).

I have built a TEG powered stove with a windup generator as start up mode. You still need electronics to transfer power from the generator to the fan.
Biggest issues: not very practical to wind for 5 minutes and since it is mechanical not very reliable. So you need a start-up battery. Reliability is the biggest challenge in this market.

TEG’s are not reliable enough for stoves that are started and stopped many times. Plus the fact that solar prices have come down significantly, the Philips stove is now solar powered. That also solves the issue of people running the stove to create a small amount of electricity.

The price of a TEG stove with small battery or a solar stove with large battery is not very different. Both need electronics. Both have to be solidly build with quality materials. It all adds up. Then comes transport and import duties. That makes them relatively expensive.

The Biolite stove that I have does have a start-up battery.

My personal view on biochar: I am afraid that the value as a fuel is so high that people will use it as fuel. Apart from that biochar is a wonderful soil amendment, specifically in certain soils.

For published papers on the Philips stove, just use google with ‘philips stove’. There is quit some information out there.

My stove work is back to hobby level, since Philips decided to step out of this business.

Kind regards,

Dr. P. van der Sluis

P Take care of the environment, print only if necessary ...

From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of Crispin Pemberton-Pigott
Sent: vrijdag 3 juni 2016 17:41
To: 'Discussion of biomass cooking stoves'
Subject: Re: [Stoves] TEGs In-Reply-To=%3C9pc0kb1vrd6p4omok6ncg7iqig2cgfrf3j%404ax.com%3E

Dear Ron

            2.  Following the TEG theme though a little - could one save on costs considerably if you have a simple TEG that has no battery or grid connection?

Isn’t that how a Biolite stove works? Is there a batter in a Biolite? The originals didn’t as I recall.

>One would only have power proportional to the stove thermal capabilities.

Exactly. The major reason to have any battery at all is to speed the ignition and reduce the smoke during that time.

>You would probably still need a control circuit that lowered fan speed, if needed to get the right stove power level.

Perfect.

If a hand-cranked fan could get the stove running, the TEG could keep it going. Perhaps that is technically the simplest solution.

Regards
Crispin



________________________________
The information contained in this message may be confidential and legally protected under applicable law. The message is intended solely for the addressee(s). If you are not the intended recipient, you are hereby notified that any use, forwarding, dissemination, or reproduction of this message is strictly prohibited and may be unlawful. If you are not the intended recipient, please contact the sender by return e-mail and destroy all copies of the original message.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20160613/f64b78da/attachment.html>