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NNadir

(37,972 posts)
11. It's relatively easy to calculate those numbers from the numbers in the post I provided.
Wed Jul 5, 2023, 06:24 PM
Jul 2023

A working figure for the amount of dangerous natural gas burned each year is here, 2021 data:


Source: 2022 IEA World Energy Outlook Table A 1a, page 435

I will say this:

According to a cheap google to solar promotion fools, solar cells in the increasingly industrialized destroyed Mohave Desert ecosystem produce, with a tilt mechanism to track, about 6.8 MJ/m^2-day.

This suggests that 1 EJ would require about 40 billion square meters without spaces, or about 40,000 sq km.

This is considerably more than 10,000 acres; closer to 1 million acres.

From the efficiencies for electrolysis in my response, including or not including liquefaction, one can do the rest of this calculation and its left as an exercise. One would of course, need some infrastructure, pipelines, gas (or liquid) storage units, compressors, turbines generators, what have you.

I rather like the exciting new energy unit, the "California," 0.125 EJ, however. It suggests that there are about 5,000 sq km of solar cells already in California, a believable number given the pictures of destroyed wilderness in the Guardian article.

The land area of California is roughly 423,000 sq km.





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So, out of curiosity, if say you were making giant solar grid Hugh_Lebowski Jul 2023 #1
probably twice as big Blues Heron Jul 2023 #2
You're dreaming. NNadir Jul 2023 #3
This is actually a more complex question than you would think. NNadir Jul 2023 #4
Not asking you to do something crazy complex like a paper to submit to a bank for a loan Hugh_Lebowski Jul 2023 #5
If nukes are the only way, then this can't be possible. There is no numerical answer to this. Blues Heron Jul 2023 #6
Yeah, let's burn the planet because we have paranoids afraid of clean energy. NNadir Jul 2023 #8
OK,I have a few minutes; I'll propose a new energy unit, "A California" corresponding to "homes..." NNadir Jul 2023 #7
Thanks for doing that, but not really my question :) Hugh_Lebowski Jul 2023 #9
He answered it - 1 solar exajoule is 8 californias, 1 H2 exajoule is 13.4 californias Blues Heron Jul 2023 #10
It's relatively easy to calculate those numbers from the numbers in the post I provided. NNadir Jul 2023 #11
Let me ask what I'm wondering in the simplest terms possible Hugh_Lebowski Jul 2023 #12
He gave you the ratio - its 13.4 to 8 Blues Heron Jul 2023 #13
All I saw him speaking about is what (I interpreted as) the MAKING of the Hydrogen piece Hugh_Lebowski Jul 2023 #14
I think that is included in the calculation. Blues Heron Jul 2023 #16
Nothing in that post's verbiage suggests it does to me Hugh_Lebowski Jul 2023 #17
pretty sure the reference to: liquid hydrogen having an energy content of roughly 120 MJ/kg. Blues Heron Jul 2023 #18
And without further clarification I assume 'energy content' refers to a theoretical maximum Hugh_Lebowski Jul 2023 #20
good article on fuel cell efficiency here Blues Heron Jul 2023 #22
Let's stick with Exajoules (1) and Californias, since CAISO gives Solar Output every day. NNadir Jul 2023 #23
Yup. I was just curious about the scale involved if you tried to use hydrogen Hugh_Lebowski Jul 2023 #24
Yeah, it's more or less a theoretical lower limit. Reality would... NNadir Jul 2023 #26
You don't have to work on that scale to get a feel for the problem. hunter Jul 2023 #15
Thanks for that, and it's more or less as I assumed 'things to be' Hugh_Lebowski Jul 2023 #19
Here's the argument I've used previously: hunter Jul 2023 #21
Thanks mate, trenchant points :) nt Hugh_Lebowski Jul 2023 #25
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