A couple of years ago I built two ram pumps and installed them in the stream near my house. They pumped water for the garden for a few months during spring and summer. I’m okay with the fact that the pumps are just useful during part of the year, but didn’t really like damming up the entire stream for my installation, seemed rude towards wildlife.
So this year I returned with a longer tube and just took the water from further upstream. I have only about 70cm head. I haven’t really measured the height I’m getting, but it’s more than the first year and enough for what I want to do.
My installation in the stream is very simple: fence post hammered/wedged into the stream bed, pump tied to it with wire. Everything wobbles a tiny bit. Might return and solidify that later, but I love it when stuff is so simple that I can just throw it into the stream and it works. After a while of pumping by hand it just runs. Variations in water height might stop it as it sits low in the water. Will report back tomorrow.
This is for a reservoir IBC and washing tank outside the kitchen. I’m thinking about adding a solar heating panel in there as well.
The image is of a smaller kid-sized pump that I want to turn into a demonstration model to take to markets and fairs.
poVoq@slrpnk.net 7 months ago
Please share some pictures of the actual pumps. Ram pumps are a fascinating topic. I always wanted to build one myself, but I don’t have a suitable location where I live right now.
tomatolung@lemmy.world 7 months ago
Agreed! Also where is this in the world?
BearOfaTime@lemm.ee 7 months ago
Anywhere there’s a stream, really.
Great for places that are off-grid. A friend’s cabin uses one to fill the supply for a gravity fed filter
schmorpel@slrpnk.net 7 months ago
IBC for collection, I plan to set another on top
Pump in the water
Sorry, just those two for now. I’ll need to gather courage before I wade into the stream again for a closeup, especially with my phone in hand. With the heat returned I also was busy installing the hose from IBC to garden to water the veggies. I’m still figuring out the connection between the two IBCs and mixing water coming from a heating panel, and waiting for a washing tank to arrive to go next to it. And then the summer heat and the corn field will dry the stream out in no time … I hope this system runs till End of July at least, but to be honest I don’t know. But even if I have this running only one month on ‘stream energy’ and 11 on electric it will be worth it.
I think ram pumps are lovely, they are so robust - it just took a couple of hours to get it back into the stream and back working (it also got a couple of hours of maintenance in the workshop, of tightening the connections again). This year it runs on a really slow frequency compared to year 1, and it seems to pump the water higher. I’d like to get some numbers one day, but it’s hard to measure anything exactly around here with our installations. Only thing I know is they run so robustly. They find their rhythm and then they just go and go and go.
poVoq@slrpnk.net 7 months ago
Indeed not so much to see on those pictures. I am a bit surprised that your ram-pump is inside the stream. Those I have seem previously were outside, but I guess you tried to maximize the head difference for the main flow?