In which JB talks about the technological challenge of lifting water without engines to do the work by gesturing at a windmill. Filmed at the Open Lucht Museum near Arnhem in the Netherlands.
Nowadays, lifting water is about the best we can do for storing energy. The energy we put into lifting it, we can recover by letting it fall through a turbine, with only about 15% loss in a modern plant. Lifting it is *hard*, but we can make it do hard work for is later!
Yes, indeed! The New York City water system is another example; it has some of the longest tunnels in the world, just to preserve a uniform descent from its reservoirs high in the Catskill Mountains down to the pipes of New York City. Lifting water is *hard*, and virtually the entire system is gravity fed. The water quality has historically been quite good indeed, because it is literally drawn from mountain streams.
The Romans did lift via siphons, an even more incredible feat than the screw in my opinion. In deep valleys they would use siphons to make the water flow down and then back up hill following the terrain. Imagine how our world would be if all of our ancestors didn't destroy knowledge Everytime they conquered a civilization.....
@@joshuahafel4506 War is part of the problem, but deliberate attacks against knowledge even more so. Like the Library of Alexandria wasn't burned down during Cesar's battles in Egypt (merely damaged); it was destroyed deliberatively and over time by Muslims and Christians. Anti-enlightenment movements are the bane of our existence.. almost as much as war is.
I always love how mind blowing everyday things that we take for granted can be, when you actually take a step back to consider it fully and compare it with how things were for people thousand of years ago. Great video Would prefer if you continued the making metal from scratch series though! ;p
Look up the Ram pump. Uses 2 one way valves and a head of water... can run 24/7 365 days of the year. "A hydraulic ram, or hydram, is a cyclic water pump powered by hydropower. It takes in water at one "hydraulic head" and flow rate, and outputs water at a higher hydraulic head and lower flow rate. "
And a DC to DC converter does exactly the same thing in electronics land. They even work a similar way. A ram pump uses "water hammer" to generate a higher pressure.
Could a waterwheel transfer the force via gears to a screw like this next to the waterwheel? Cause waterflow from the river is constant, while the wind is not. Perhaps the tolerances were just not tight enough to make this plausible back in the day.
Those setups exist. The water lifting windmills are just so well known because of the Netherlands who use(d) them to keep their feet dry. As they needed to lift water from canals that had no flow but had wind, they used wind to lift water.
As long as the pelton wheel is turned by more volume/heavier weight than the volume/wieght that the screw is displacing&(minus any friction points)it should work🤷🏼♂️
wait, what's the reason for the 6-foot elevation gain limit? is it just a limit of the old manufacturing techniques, or is there something more fundamental to it?
Yes. You have a fixed amount of power (from the size of your windmill and the strength of your average winds). Thus, you are limited - if you go for a longer screw for more elevation, you have to reduce the capacity or the mill won't be able to turn it. By keeping the rise to the minimum, you can maximize the diameter of the screw (and thus the quantity of water lifted per rotation). So, for every foot of elevation gain you are getting less water per hour out of the same facility's energy use.
I bet they are using a screw because it will still function properly at very high load and maybe act as a brake, bucket chains and wheels would be destroyed in a harty gust. no screw on the marble machine x though
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