Green Building Forum - Burning woody garden waste Sat, 09 May 2026 21:27:36 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 Burning woody garden waste https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=2112&Focus=27779#Comment_27779 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=2112&Focus=27779#Comment_27779 Mon, 21 Jul 2008 09:54:25 +0100 jules I didn't pay too much, I didn't have to drive too far to collect it (how many miles are you from Surrey??), it's second hand of course so it ticks that box as well, thus I don't regret buying it. It gives me an extra option, and the shredded mulch will be very useful. But yes your point was well made.

And no-one actually answered my question: does a very slow fire result in more ash and less gas/CO2 than a fierce fire, or vice versa? Ignoring the smoke issue, I'm still wondering whether a slow fire is better when you don't need the heat.]]> Burning woody garden waste https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=2112&Focus=27788#Comment_27788 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=2112&Focus=27788#Comment_27788 Mon, 21 Jul 2008 10:43:33 +0100 fostertom http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=2173&page=1#Item_0 could be relevant to that.]]> Burning woody garden waste https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=2112&Focus=27791#Comment_27791 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=2112&Focus=27791#Comment_27791 Mon, 21 Jul 2008 11:23:47 +0100 fostertom Posted By: fostertomManual labour is powered by oxidising hydrocarbon food, releasing CO2, H2O and exothermic energy. The food is produced, transported and cooked, worldwide, thanks to many kinds fossil fuel input. The fossil fuel content of the world's food-as-stored-energy is, I believe, about 80% - without fossil fuel input, world food production would be one fifth of what it is now, with implications for sustainable population levels. The world food industry is a way of converting fossil fuel into food. Doing things by manual labour may well be more fossil fuel intensive than e.g. using a chain saw (or chipper)In http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=2112&page=2#Item_2
Posted By: Chris Wardleyou use less fossil fuel energy travelling by electric bike, charged from the grid, than pedalling due to the huge amount of fossil fuel that goes into getting food to our tables
]]> Burning woody garden waste https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=2112&Focus=27813#Comment_27813 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=2112&Focus=27813#Comment_27813 Mon, 21 Jul 2008 16:22:29 +0100 mike7 It is rated at 2kw but in general the electric motors on them only use as much power as they need to maintain their speed. When there's nothing much going through, little power is used, 450w on mine.
Jules, I don't know the answer to your real question but I do know that CO2 is not the only greenhouse gas, and that many of the vapours in incompletely burnt woodsmoke are thought to be carcinogens. I think I'd go for the fast burn myself.]]>