PugJesus@lemmy.worldM to Illustrations of history@lemmy.worldEnglish · 5 months agoAncient Roman water supply diagramlemmy.worldimagemessage-square50fedilinkarrow-up1256arrow-down11
arrow-up1255arrow-down1imageAncient Roman water supply diagramlemmy.worldPugJesus@lemmy.worldM to Illustrations of history@lemmy.worldEnglish · 5 months agomessage-square50fedilink
minus-squareCameronDevlinkfedilinkEnglisharrow-up43·5 months agoSame way a fuel siphon works, as long as the opening is below the inlet, and the rest of the tube is full and sealed, the water will flow. https://en.m.wikipedia.org/wiki/Siphon
minus-squareSaintWacko@slrpnk.netlinkfedilinkEnglisharrow-up7·5 months agoIt never would have occurred to me that siphons work that way, too!
minus-squareDonjuanme@lemmy.worldlinkfedilinkEnglisharrow-up7·5 months agoHow did the Romans seal that apparatus? Cement? Even that would fail rather quickly
minus-squareCameronDevlinkfedilinkEnglisharrow-up7·5 months agoLead Pipes: http://www.romanaqueducts.info/siphons/siphons.htm Also some terracotta pipes, but not really clear how its sealed.
minus-squareSendMePhotos@lemmy.worldlinkfedilinkEnglisharrow-up4arrow-down2·5 months agoYeah, but the water pipe goes back up meaning that there is near equal pressure on either side of the U-Siphon, right? Kind of negates the siphon, in a sense? I’m no fluid dynamics expert. Just a casual Joe.
minus-squareCameronDevlinkfedilinkEnglisharrow-up5·5 months agoIts a bad diagram, the other side needs to be lower :/
minus-squarejaybone@lemmy.worldlinkfedilinkEnglisharrow-up4arrow-down2·5 months agoBy why did they even need one here though?
minus-squarewischilinkfedilinkEnglisharrow-up10·edit-25 months agoBecause it’s simpler to build siphons through large valleys instead of 100 meter high 10 kilometer long aqueducts.
minus-squareDonjuanme@lemmy.worldlinkfedilinkEnglisharrow-up4·5 months agoBut you have to keep water pressure throughout the length of that tube, how did they do that with their materials?
minus-squarewischilinkfedilinkEnglisharrow-up1·14 days agoThere is no additional pressure besides from the height/drop, so unless so have a substantial leak where you lose a lot of water, it “just works”.
minus-squareKillerTofu@lemmy.worldlinkfedilinkEnglisharrow-up8·5 months agoFor demonstration purposes only.
minus-squaretylerlinkfedilinkEnglisharrow-up4·5 months agoValley was too deep for the aqueduct but they didn’t want to make the drawing taller just for that
minus-squareKlear@sh.itjust.workslinkfedilinkEnglisharrow-up1·5 months agoRomans were notoriously averse to making drawings taller.
Same way a fuel siphon works, as long as the opening is below the inlet, and the rest of the tube is full and sealed, the water will flow.
https://en.m.wikipedia.org/wiki/Siphon
It never would have occurred to me that siphons work that way, too!
How did the Romans seal that apparatus? Cement? Even that would fail rather quickly
Lead Pipes: http://www.romanaqueducts.info/siphons/siphons.htm
Also some terracotta pipes, but not really clear how its sealed.
Yeah, but the water pipe goes back up meaning that there is near equal pressure on either side of the U-Siphon, right? Kind of negates the siphon, in a sense?
I’m no fluid dynamics expert. Just a casual Joe.
Its a bad diagram, the other side needs to be lower :/
By why did they even need one here though?
Because it’s simpler to build siphons through large valleys instead of 100 meter high 10 kilometer long aqueducts.
But you have to keep water pressure throughout the length of that tube, how did they do that with their materials?
There is no additional pressure besides from the height/drop, so unless so have a substantial leak where you lose a lot of water, it “just works”.
For demonstration purposes only.
Valley was too deep for the aqueduct but they didn’t want to make the drawing taller just for that
Romans were notoriously averse to making drawings taller.