On 14/08/2014 11:10, Chris Hogg wrote:
On Thu, 14 Aug 2014 10:58:49 +0100, John Williamson
wrote:

On 14/08/2014 10:33, The Natural Philosopher wrote:
On 14/08/14 10:29, Capitol wrote:
The Natural Philosopher wrote:
On 13/08/14 23:30, Nightjar "cpb"@ insert my surname here wrote:
'It is important to point out that pumping generates more power than it
consumes'

http://www.halcyontidalpower.com/the...al-protection/

At this point you just know its fairy dust

Hydraulic ram? Just a thought.

Still doesn't give an overall increase in energy.

Merely converts one form to a more useful one.

And not very efficiently at that.

And surely only really applicable to small volumes of water supplying
isolated locations such as farms or individual houses. They used to be
fairly common in Cornwall, and no doubt elsewhere were the topography
was appropriate, for raising water from a valley bottom to, for
example, a water trough for cattle on higher ground. Can't see them
being used on anything like a large scale.


This claimed to give 50,000 litres a day with a 100ft lift:

https://www.youtube.com/watch?v=B1PlQzRYkII

--
Colin Bignell