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Comment by Daniel on June 17, 2010 at 7:52pm

Shane, Pat

I have some experience in compressing and storing wood gas, for the purpose of testing wood gas to liquid fuels without having to run my gasifier during the testing. I see no other practical purpose, for the reasons out lined Shane and more ......I used tractor inter tubes and compressed gas cylinders was able to compress it to 460 psi using refrigerant compressor......Here is a video of me filling tractor inter tubes with a pancake compressor http://www.youtube.com/watch?v=uFLf_aI6GrM
Sorry I have not had more time to participate in group lately have two more jobs to finish and back to gasification !!!!!!

Comment by Alex Simpson on June 17, 2010 at 7:29pm

I agree with Shane about the low BTUs but as far maybe doing some low pressure storage i have heard of using kind of a barrel with another upside down barrel inside of it suspended by counterweights for methane.The lower tank is possibly be sealed by some water. It might take some very large tanks to get any kind of practical amount stored, have to do some math or testing on that one...

Comment by paul czarnecki on June 17, 2010 at 1:40pm

hey guys if anyone is looking to store fuel outside i found old freezers work good for keeping the fuel dry and keeps it out of the shed too,also they can be used as an outdoor work bench

Comment by Shane Gorter on May 23, 2010 at 4:34am

Hey Pat,
There are many reasons why compressing woodgas is not very efficient manner of energy storage. One problem with woodgas storage is that the gas itself has relative low BTUs.

Woodgas = 150 BTU Cubic Foot
Propane = 2500 BTU Cubic Foot
Natural Gas = 1000 BTU a Cubic Foot

This is due mostly to nitrogen and other inert gases getting mixed in with the usable ones. Another issue is that hydrogen gas a major component of woodgas is extremely difficult to contain because its molecular size and it is also is relatively fluffy gas requiring a lot of space to store very little energy. Pure Hydrogen = 320 BTU a cubic foot. Also in order to compress the gasses you also need to use a compressor which requires more energy to run.

If your looking for home power use, a battery bank would probably be the most efficient route to go, where you just fire up the gasifier when your batteries get low. Another possibility is using the Fischer Tropsch process to convert your gases to liquids which is discussed in the Gas to Liquid channel.

Hope this helps,
Shane

Comment by pat harman on May 22, 2010 at 10:52am

Hello people:
New to this very interesting stuff. I have a question for all:
Has anyone ever tried to compress the gas? Why couldn't the combustable gas be compressed into a tank similar to propane? If a number were done at once then it might be p[ossible to set up a weekly or semi weekly "burn day" instead of having to continuosly fire for gas.

Please let me know what you think.

Thanks.
Pat

Comment by Pepe on May 20, 2010 at 4:52pm

Hello Matt,
I was browsing around on Adam' blog and ran into a diagram of an updraft/downdraft stove used to fire a kiln. It's air ejector powered. Looks like something you might be interested in for heating an oven under sap pans. Seems it could have a quick disconnect also. It's woodgas.com and the unit is called a dasifier.

Comment by Wayne Baker on May 16, 2010 at 8:05pm

Matt Roy,
Sorry I have been busy and havent been online.
Here is a link to part 1 of the gasification boiler that I had mentioned.
He has a few vids about it and his system.

http://www.youtube.com/watch?v=xX-RcXHgeYQ

If you have anys question for me it is probably best to msg me; then I will receive a notice in my email.

Thanks

Comment by Paul Drieman on May 16, 2010 at 7:49pm

Hi Dave,
Poured some in a boiler. Don't want it thin, keep it as dry as you can and still get a mix and form. We had no other directions except that we let it dry before firing as any moisture becomes steam.

Comment by DAVID ORRELL on May 16, 2010 at 7:02pm

HI YOU ALL, I AM GETTING READY TO INSULATE MY GASIFIER WITH REFACTORY CLAY/CEMENT I HAVE NO EXPERIENCE WITH THIS. CAN ANYONE GIVE ME ADVICE ABOUT HOW TO MIX , POUR, FORM,AND KILN FIRE THESE TYPES OF MATERIALS ? IS THERE A VIDEO OUT THERE ON HOW-TO ? ANY HELP WILL BE MUCH APPRECIATED.. DUMPSTER DAVE

Comment by Matt Roy on May 14, 2010 at 9:26pm

Charlie-

I have commercially built preheater and hoods on the evaporator now. My arch is an intens-o-fire arch which is air tight. Your points on the benefits of using the gassifire are exactly mine and my reason for wanting to come up with one that will work.

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