fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 8 days agoGotta go fastmander.xyzimagemessage-square163fedilinkarrow-up1937arrow-down111
arrow-up1926arrow-down1imageGotta go fastmander.xyzfossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 8 days agomessage-square163fedilink
minus-squareAlcoholicorn@mander.xyzlinkfedilinkEnglisharrow-up8arrow-down1·8 days agoWot if instead of boiling water, we boiled CO2, and instead of boiling CO2, we kept it at high pressure so that it never quite reached boiling or condensation?
minus-squarenot_IO@lemmy.blahaj.zonelinkfedilinkEnglisharrow-up1·7 days agoshouldn’t it boil so that it can expands and makes pressure to move a turbine? why use energy to make a counter pressure
minus-squareAlcoholicorn@mander.xyzlinkfedilinkEnglisharrow-up1·7 days agoSupercritical phase, it still changes pressure with heat, but there’s no abrupt phase transition. This increases efficiency somehow.
minus-squareBazell@lemmy.ziplinkfedilinkEnglisharrow-up16·8 days agoUsing water is cheaper and easier. That is all that stop your idea from being IRL.
minus-squarepotoooooooo ✅️@lemmy.worldlinkfedilinkEnglisharrow-up23arrow-down1·8 days ago“The only downside of your idea is that it is terrible.”
minus-squarePup Biru@aussie.zonelinkfedilinkEnglisharrow-up6arrow-down1·8 days agogeothermal typically uses chemicals other than water because they have a lower boiling point the specific chemical being cheap is relatively unimportant if it’s a closed loop. the cost is next to nothing compared to the whole construction
minus-squarefullsquare@awful.systemslinkfedilinkEnglisharrow-up1arrow-down1·8 days agodifferent tool for a different purpose. water has a large heat of evaporation which is something that allows for more compact turbines
minus-squareAlcoholicorn@mander.xyzlinkfedilinkEnglisharrow-up1arrow-down1·8 days agosCO2 turbines are like 1/30th the size of an equivalent steam turbine.
Wot if instead of boiling water, we boiled CO2, and instead of boiling CO2, we kept it at high pressure so that it never quite reached boiling or condensation?
shouldn’t it boil so that it can expands and makes pressure to move a turbine?
why use energy to make a counter pressure
Supercritical phase, it still changes pressure with heat, but there’s no abrupt phase transition. This increases efficiency somehow.
Using water is cheaper and easier. That is all that stop your idea from being IRL.
“The only downside of your idea is that it is terrible.”
This kills the crab
geothermal typically uses chemicals other than water because they have a lower boiling point
the specific chemical being cheap is relatively unimportant if it’s a closed loop. the cost is next to nothing compared to the whole construction
For now
different tool for a different purpose. water has a large heat of evaporation which is something that allows for more compact turbines
sCO2 turbines are like 1/30th the size of an equivalent steam turbine.