Showing posts with label gasifying stove. Show all posts
Showing posts with label gasifying stove. Show all posts

Monday, 11 January 2010

Woodgas Outdoor Fireplace review

Some time ago I posted a review of the Woodgas Campstove we use for cooking in the wood. Well, now I've got another video - this time of its big brother, the Woodgas Outdoor Fireplace:The fireplace works on exactly the same principle as the campstove, with a fan drawing air in through the holes round the outside of the base, and injecting a small amount through holes in the base of the combustion chamber:The limited amount of air, combined with the heat of the fire, results in the wood being gasified, to produce a mixture of carbon monoxide, methane and hydrogen (known as woodgas), which is then ignited when it reaches the much larger airflow coming in through the holes in the top (don't worry, all the CO is burned, no risk from the woodgas):There are a few small differences between the fireplace and the campstove. The campstove had two power sockets - high and low - and ran from a pair of AA batteries. The fireplace can take a 9-12V supply, so can run directly from a lead-acid battery, or eight smaller batteries in a pack. However, it is supplied with a mains adaptor, as many people will be using it in the garden, hopefully to replace one of the nasty fossil-fuel burning patio heaters! The fan in the stove only uses 2W of power, while the heat from the stove can reach 16kW! The fireplace also has a knob to vary the airflow, although you'll normally only use anything less than maximum while lighting it.
The fireplace also has handles added to the side. These stayed cool even after an hour of operation, allowing you to move the stove (carefully!) after you've unplugged it without waiting for it to cool down.
Anyway, here it is full of fuel and ready to go. A full load of fuel should burn for an hour and a half, and you can top it up (gradually) while it is burning.Just before we get to the video, here's a few photos of it in action:
nice, eh? Well, without further ado, here's the video on how to use one:


If you want to buy one, go to woodgasstove.co.uk

Mike

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Monday, 25 May 2009

Woodgas camp stove demo

You may have noticed in some recent posts that we've got a fancy new stove to use at the wood - well, here's a demo video of how it works. (Still pictures and a text explanation are below)



It's a WoodGas CampStove XL. What it does is "gasify" the wood, burning the gas produced in an efficient manner right under the cooking pot. Basically there's a cylinder inside it that you fill with small sticks:
If you look carefully you'll see some small holes at the base of this cylinder - these allow in a small amount of air to gasify the wood. Gasification means allowing the wood to partially burn, resulting in a mixture of gases, including hydrogen, methane and carbon monoxide (so don't use it indoors). These are all flammable gases, and as they rise up the inside of the stove they meet with more air injected through a ring of holes at the top of it:
The gas mixes with this additional air and burns. Right above it sits your cooking pot, resting on a simple but effective pot stand:
The air is drawn in through holes around the the outside of the base of the stove, which encloses a small fan. In the picture below you can see the two power sockets for the fan (high and low speed), and the air inlet holes:
The battery pack contains two AA rechargeable batteries (I reckon my 3200mAh batteries will run it for over 15 hours), and you plug it into the high or low speed socket depending on how much heat you want out of the stove:

Mike

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Sunday, 26 April 2009

Friday in the woods

Friday was the last day my family were visiting, so we had dinner up in the woods in the evening. The wayleave is now dense with leaves:and there's all kinds of flowers out on the ground, such as Violet:
and Blue Bugle:Also, our mystery tree has now flowered, thus confirming its identity as Crab Apple. I'll be interested to see if there are any fruit, as I've never noticed them before...
As we were cooking for six adults and my nephew Joshua:
we needed several fires going. There was the one we were sat round, which my brother Andy had started in the afternoon before we got there, and hot coals from that were used to light the kelly kettle to make drinks. I was also trying out my new pot stand attachment for it:With so many of us we couldn't fit dinner in one saucepan, so we had the big one on our normal cooking stove:and a smaller pan on my shiny new woodgas stove:
You'll notice it has a tiny battery pack - this supplies a controlled amount of air to gasify wood at the bottom of the stove, and more air at the top of the stove to burn the gas produced , just under the pan:I'll do a post just on this stove soon, including how to use it.

After dinner our neighbour Andrew called in to collect some wood for a caravan trip he's going on, so he can have a few camp fires on the way. He had a quick go with the air rifle while he was there:but seemed surprised he hit the tin can first time:Anyway, he got into splitting logs after that:
and we loaded up his truck.

My nephew had to go home to sleep, as he's only little, but my parents stayed up with us until dusk, sat round the fire.and we left with the sound of the Tawny Owl echoing through the woods.

Mike

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