Re: Hydroelectric Power



It takes more energy to move the water uphill than it creates. Otherwise,
you just created a perpetual motion machine.
But, there are pumps that can be used to move water uphill. Spiral Pumps
can be used for with a water wheel configuration, and there is a second type
of pump (I forget the name) which uses the momentum of the water to move
small amounts of water uphill. Both of which are less efficient than a
turbine or water wheel.

There are "Low Head Turbines" which can be implemented where there is only a
drop in terrain of a few feet.

Brent


"Wonderer" <carlo.germain@xxxxxxxxx> wrote in message
news:1145913911.340637.14340@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I am no scientist, but how efficient would it be to raise the potential
energy of a body of water with solar, wave, tidal or horse power? Do
we have to wait for it to rain? Rain is widely collected solar power,
While Wind is both solar and kinetic. Can we use solar cells or wind
turbines to pump water up to a higher elevation and then run down into
hydroelectric turbines? Why is this not being done anywhere?



.

Relevant Pages

  • Re: Help with SR time dilation
    ... The pumps are initially off, ... >> water troughs are nearly filled with water. ... The pump on trough A pumps water ... >> As viewed from the trough A frame, according to SR, pump B is pumping ...
    (sci.physics.relativity)
  • Re: On serious bilge pumping........
    ... large amounts of water from a boat in a hurry. ... with 3 or 4 feet of water over it is an experience I would not wish to repeat. ... portable and built in pumps. ... All bilge pumps would benefit from this configuration, but permanently fixed bilge pumps so arranged must include a vented loop, defeating the syphon assist, it seems, and, I might add, rightly so, unless diligently supervised. ...
    (rec.boats.cruising)
  • Re: Severn tunnel is "wet" - but salt or fresh?
    ... Sudbrook 1, 2 and 3 are at the actual pumping station itself, Sea Wall ... Sea Wall pumping station pumps any ... Sudbrook 1, 2 and 3 contain the inflow of water from the Great Spring, ... so M&E engineering staff on site. ...
    (uk.railway)
  • Re: Green O Rings
    ... (These are the main water pumps used in Launderettes). ... Often all that happens is that the 'O' ring rubs away to a flat face ... They are only pumping water, so no need for any chemical resistance, ... By the way no commention with Grundfos other than we use their pumps ...
    (uk.rec.models.engineering)
  • Re: Natural Disaster Preparation? (was: Re: LA Times Article - Gourmet Eating for Less)
    ... hurricane season. ... mean, you can't reasonably "prepare" for a forest fire, even if you ... hoses and water pumps are operational. ...
    (rec.food.cooking)