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Archive:000/Hydrogen gas/Pressurized storage: Difference between revisions
Archive:000/Hydrogen gas/Pressurized storage (view source)
Revision as of 16:29, 26 October 2024
, 26 October 2024Elie moved page Hydrogen gas/Pressurized storage to Archive:000/Hydrogen gas/Pressurized storage without leaving a redirect: Huge_refactor
(Created page with "==How much steel: Estimating the ''absolute bare minimum'' required== In physics, there is a general formula to estimate the theoretical minimum material-to-gas ratio, for ''any material'' containing ''any gas'' at high pressure. a = 1.5 R T D / (S M) {|class="wikitable" !colspan="2" |Parameters |- |<code>a</code> |The '''ratio''' we're calculating {{minor|Mass of the container, divided by the mass of the gas}} |- |<code>R</code> |{{light|''The universal gas constant...") |
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|<code>a</code> | |<code>a</code> | ||
|The '''ratio''' we're calculating {{minor|Mass of the container, divided by the mass of the gas}} | |The '''ratio''' we're calculating {{minor|'''Mass''' of the container, divided by the '''mass''' of the gas}} | ||
|- | |- | ||
|<code>R</code> | |<code>R</code> | ||
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|- | |- | ||
|<code>T</code> | |<code>T</code> | ||
|The maximum storage '''temperature''' | |{{minor| }} The maximum storage '''temperature''' {{minor|<small>Relative to ''absolute zero'' (−273°C)</small>}} | ||
|- | |- | ||
|<code>D</code> | |<code>D</code> | ||
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|- | |- | ||
|<code>M</code> | |<code>M</code> | ||
|The '''molar mass''' of the gas | |The '''''molar'' mass''' of the gas {{minor|Which, in the case of ''hydrogen gas'' (H<sub>2</sub>), is about <code>2.02 g/mol</code>}} | ||
|} | |} | ||
<tab name="How this formula was obtained" collapsed> | <tab name="How this formula was obtained" collapsed> | ||
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</tab> | </tab> | ||
Let's apply this formula to a few possible cases below: | ''Let's apply this formula to a few possible cases below:'' | ||
{{dp | |||
|T | |||
|tempC(60) | |||
|Maximum storage temperature | |||
|Chose 60°C because it's just above the highest weather temperature ever recorded on Earth. This doesn't account for future climate change or improper storage of the tanks. In any worst case, the tanks should be designed to vent the gas (or deform?) rather than explode, hopefully. | |||
}} | |||
{{dp | |||
|M | |||
|2.01588 g/mol | |||
|Molar mass of hydrogen gas (H<sub>2</sub>) | |||
}} | |||
===Cheap structural steel=== | ===Cheap structural steel=== | ||
{{empty}} | <div style="background:#DFD"> | ||
{{empty}} <br /> {{light|[calculation]}} | |||
</div> | |||
Structural steel is mostly iron & carbon, which are abundant on Earth. The main concern would be the energy needed to process all that steel. | |||
However, this is just a thought experiment, because hydrogen gas is known to react with structural steel anyway. Let's try stainless steel next: | |||
===Stainless steel=== | ===Stainless steel=== | ||
{{ | {{dp | ||
|stainless_steel.density | |||
|7.80 g/cc | |||
|Density (weight per volume) of 10.9 alloy steel | |||
|[https://matweb.com/search/datasheet.aspx?matguid=e11dcacd0b2c4cdeae2e2c1b5b0816a1&ckck=1 Ovako ISO 898 grade 10.9 34CrNiMo6 (6499) Steel, +QT] | |||
}} | |||
{{dp | |||
|stainless_steel.yield_strength | |||
|897 N/mm^2 | |||
|Tensile yield strength of the stainless steel | |||
|Using "10.9 alloy steel" http://www.volksbolts.com/faq/basics.htm | |||
}} | |||
{{calc | |||
|1.5 R T stainless_steel.density / (stainless_steel.yield_strength M) | |||
||||^ Material-to-gas ratio | |||
}} | |||
Stainless steel contains more than just iron & carbon. It also contains nickel & chromium, which are scarcer resources. {{pn|Need to do an analysis regarding mineral reserves.}} | |||