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[Tehran]

This isn't a suggestion - I was just looking at pump types out of curiosity, and this one looked the most interesting.



It looks like water is shoved upwards from the center.

You know, if floodgates displaced water instead of atomsmashing it, you could totally make something like this to pump massive amounts of water vertically. No more pump stacks!

[ECrownofFire]

We need doors and floodgates to displace stuff. Also, that thing looks really weird, and I can see how it works, but I just don't get it. There are actually a lot of things we could use. Vertical pumps are in that rather large list. I want doors to displace dwarves too. Would make a good transport system. Actually I think what would work well is doors displacing on the same Z-level, and floodgates displace vertically. If there's no place to go, they get squished.

[Scarpa]

This looks very similar in concept to a Wankel (rotary) engine.

[keda]

Is it just me or is that thing not pumping inward on both sides?

[darkrider2]

Is it just me or is that thing not pumping inward on both sides?

Yeah I think it is...

[Star Weaver]

I had to follow the space pocket with my mouse cause my eyes just go  around one revolution.

Someone should make one of these that you can (/have to) run through in a FPS or other 3d game ...

[Tehran]

We need doors and floodgates to displace stuff. Also, that thing looks really weird, and I can see how it works, but I just don't get it. There are actually a lot of things we could use. Vertical pumps are in that rather large list.

Has Toady said that he plans to implement vertical pumping?

Right now, the Archimedes screw pumps work exactly like they should - you can't use a screw pump to pump water higher than its output level, because otherwise the liquid starts to flow backwards through the screw.

I always thought that the screw pump was going to be the pinnacle of dwarven pump technology. Maybe not?

Someone should make one of these that you can (/have to) run through in a FPS or other 3d game ...

I am kind of surprised that Mario hasn't done it yet.

[ECrownofFire]

Well, that's the thing. The screw pump can't go vertical. I think I heard somewhere it can't go above 60 degrees or so, otherwise the water flows down it. I think a scroll pump would move it directly upward. Pumps without vacuum force are somewhat limited, though this one looks pretty good for vertical pumping.

[G-Flex]

Scroll compressors are very recent industrial technology; I don't see those being considered.

I was looking up "medieval pumps" on Google and found this. I'm not sure why they mention Elizabeth I as being "medieval", but hey.

Some of these may also be relevant.

[ECrownofFire]

I can see dwarves using that gear pump. The chain "pump" too, though it's not really a pump in most senses, more like a transport system. Piston pumps are rather doubtful, but in the end it's Toady's decision. Unless he opens mechanics up for modding, which would be awesome, but doubtful it will ever happen. Gear pump is more likely in any case, doesn't look terribly efficient though.

[Tehran]

Scroll compressors are very recent industrial technology; I don't see those being considered.

I was looking up "medieval pumps" on Google and found this. I'm not sure why they mention Elizabeth I as being "medieval", but hey.

Some of these may also be relevant.

The gear pump looks very dwarfy.
That artist put the arrows on the wrong way, though. Fluid actually travels around the edges, not in the middle where the gears mesh together. Like so:


Apparently, if Toady ever gets to Bloat350, he'll implement a kind of pump called a "tympanum wheel," a type of compartmented "waterwheel" pump.

[sonerohi]

The blood pump looks sweet.

[RCIX]

Scroll compressors are very recent industrial technology; I don't see those being considered.

I was looking up "medieval pumps" on Google and found this. I'm not sure why they mention Elizabeth I as being "medieval", but hey.

Some of these may also be relevant.

The gear pump looks very dwarfy.
That artist put the arrows on the wrong way, though. Fluid actually travels around the edges, not in the middle where the gears mesh together. Like so:


Apparently, if Toady ever gets to Bloat350, he'll implement a kind of pump called a "tympanum wheel," a type of compartmented "waterwheel" pump.

AFAIK, it really depends on the existing water flow to me. It looks like the water could go either way to me.

[Kay12]

Actually the middle part is quite consistently sealed so I think around the edges is the only viable system.

[Tehran]

Yeah, those gears are that very specific shape in order to minimize backlash - to ensure the tightest possible fit.

I dunno how much they knew about gear tooth optimization back in the 1400's, though.