OT: CO2
Hi LC. I did originally think about home delivery for heating purposes. When I was a child I recall having deliveries of coal by a strong and very blackened individual who used to carry bag after bag from the back of his lorry into a coal shed in our back garden.
From the figures I grabbed off the internet it looked like around 174 litres of water, combined with 540kg of lime (around the same as 11 bags of coal) would be sufficient to produce a comparable amount of weekly heat energy as that of the average households total energy demands. I've no idea what the heat generation rate is however.
I switched my thoughts to using a more central processing plant and generating electriciy instead on the grounds that the limemilk residue would be a significant issue if produced in/around the home.
Tom PM'd me and highlighted how it's a very inefficient means of energy conversion, requiring much more energy to create the lime out of limestone than is provides when the lime is mixed with water. I already thought that was the case but had in mind that the main concept was that of a method to enable intermittent low cost energy sources (wind, solar) to store energy (lime) for later usage as and when required, and doing so in a potentially favourable CO2 transition manner (taking CO2 out of the air and locking it into rocks). As Tom also pointed out however, reducing atmospheric CO2 might not be such a good thing for plant/coral life.
Best. Clive.
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