The Light

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Paul Barker
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#16 Re: The Light

Post by Paul Barker »

Only on the part of this conversation relative to CO2 emissions.

My last senior of my fathers blood his youngest brother now 90+ was only telling me last night about early motor vehicles.

One thing he mentioned, the waste heat of internal combustion is inefficient. He remembers a time when the waste heat powered a steam cylinder.

He also mentioned vehicles that brought a gas plant for internal combustion of their own. You put any old wood and coal in it. Harvested the gas for youre engine. He told me the name but it has escaped me. Something like “bring along”

Baxi in collaberation tried an additional electricity generating Sterling engine powered by waste heat of combustion. It was about £10,000 the measly amount of electricity generated never made up for the enormous cost of the unit, even with the feed in tarrif. The units were utterly unreliable and most of them were given up on.
"Two things are infinite, the universe and human stupidity, and I am not yet completely sure about the universe." – Albert Einstein
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Nick
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#17 Re: The Light

Post by Nick »

Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
Andrew
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#18 Re: The Light

Post by Andrew »

Nick wrote: Fri Aug 19, 2022 12:12 pm Carbon 12
Oxygen 16

so 1 Carbon + 2 Oxygen = 44

44 * 2 / 12 = 7.3

So 2,000,000 tons of coal of 100% carbon and entirely converted to CO2 would produce 7.300.000 tons of CO2

So the figure looks entirely possible.
what is the volume of gas
1 mole of CO2 (or any gas) occupies 22.4 dm^3 at s.t.p, where 22.4 dm^3 is called molar volume of a gas at s.t.p.

One mole of carbon dioxide molecules has a mass of 44.01g

7,000,000 tons = 1016.05 * 7,000,000 kg = 81,235,000 kg = 1,845,830,494 moles of CO2 = 41,346,603,044dm^3

So the answer is 41,346,603,044L or 41.3 million cubic meters

So a cube 435 m per side or 26 cubic football fields

unless there are some errors in the above.
> 44 * 2 / 12 = 7.3
I am curious why you multiplied by 2 Nick?
Analogue, the lost world that lies between 0 and 1.
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Nick
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#19 Re: The Light

Post by Nick »

I am curious why you multiplied by 2 Nick?
Probably because it started with 2 million, though I may be wrong
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#20 Re: The Light

Post by Andrew »

OK so 1000 anthracite produces 3600 C02, that makes sense :)
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Nick
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#21 Re: The Light

Post by Nick »

Yes, just using the atomic weight of C and O.
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izzy wizzy
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#22 Re: The Light

Post by izzy wizzy »

Paul Barker wrote: Sat Aug 20, 2022 11:20 am One thing he mentioned, the waste heat of internal combustion is inefficient. He remembers a time when the waste heat powered a steam cylinder.
The beginning of the condensing boiler and such like.
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shane
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#23 Re: The Light

Post by shane »

Nick wrote: Fri Aug 19, 2022 12:12 pm So 2,000,000 tons of coal of 100% carbon and entirely converted to CO2 would produce 7.300.000 tons of CO2
So producing that 7.3m tonnes of CO also removes 5.3m tonnes of useable O2 from the atmosphere? Hadn’t thought of that before.
The world looks so different after learning science. For example, trees are made of air, primarily. When they are burned, they go back to air, and in their flaming heat is released the flaming heat of the Sun which was bound in to convert air into tree.
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Nick
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#24 Re: The Light

Post by Nick »

izzy wizzy wrote: Mon Sep 12, 2022 7:46 pm
Paul Barker wrote: Sat Aug 20, 2022 11:20 am One thing he mentioned, the waste heat of internal combustion is inefficient. He remembers a time when the waste heat powered a steam cylinder.
The beginning of the condensing boiler and such like.
A more modern version would be the MGU-H

https://f1.fandom.com/wiki/Motor_Generator_Unit_-_Heat
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
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