13 Comments

Brilliant...I'm in the middle of planting and tending a lot of coppice forestry right now. One more thing we can do with all of this sustainably produced biomass is pyrolysis. Get heat and turn half of the carbon into biochar, to put back into the soil where it remains safe for millenia.

One niggle on the heat pumps. We can use CO2 as a refrigerant instead of the nasties like R410. And although they may seem complicated, the tech is well over 100 years old.

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Good luck with your coppicing! And yes, lots of other carbon sequestering uses for coppice wood.

It’s true that other refrigerants can be used in heat pumps, but the efficiency declines considerably, further undermining the eco-friendly claims made about the technology.

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You might want to check out the COP of CO2 units. They're in the same league as last-gen CFC tech. And we are going to need this stuff, because on the flip side of the heating coin there is the inescapable fact that billions of people are living in places where it is getting too hot to survive, and they have nowhere to go.

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Low tech cooling is the subject of a future piece

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Thanks for the piece! Really want one of these. Will my landlord take away my deposit if I build one of these in the garden, I wonder? 😂 Do you have a source for the exhaust gases chart? And do you know why the CO conc spikes at the end of the time series?

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Very nicely presented. Thanks for sharing!

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🙏🙏🙏

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Love the stove

We need more co2

Funny how smart people can be so dumb.

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Dang! I just bought a house with a wood stove and I was so excited, now I'm bummed about it! Something to look more into then I suppose. Thanks for all of this great info.

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Why is CO2 such a concern? It is plant food.

I certainly want something more fuel-efficient though...

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Sure it’s plant food but 1) more of it in the atmosphere leads to more droughts and floods, which isn’t great for crop yields among other things, and 2) sure, there has been even more of it in the atmosphere before, however the rate of change in CO2 levels right now is completely unprecedented and far too quick for species to adapt.

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I cannot 100% assess this but with the capacity we now to build houses that do not let heat escape ...this could result in very little fuel use, period. So that seems like a step to take.

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That is not a new capacity but an old one. Contemporary LEED-certified homes are far more energy intensive to build and maintain than natural homes. A cob bale structure outperforms concrete and steel enormously.

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