Skip to main content  Text Only version of this page
BBCi

CATEGORIES
TV
RADIO
COMMUNICATE
WHERE I LIVE
INDEX

TUESDAY
11th November 2003
Text only
Science Online Message Board
This messageboard is currently closed.
Please click "opening times" to check when messages can be posted.
Register Opening Times

BBC Homepage
Messageboards
Science
» Message Board
Current science
Court of opinion
Not rocket science
Science Q&A
Dinosaurs and prehistory
Technology
Space
Star gazing
Science fiction
Weird science
Evolution
Origins

ChatGuide
Change Your Details
FAQ
h2g2
 

About the BBC

Contact Us

Help


Like this page?
Send it to a friend!

 

Topic: Current science
On tv, radio, the web or the bus. Wherever you heard or saw it, chat about news and topical science here. See also Radio 4 or Points of View.
Back to discussions list.
The views expressed in this community area are those of members of the public and, unless specifically stated, not those of the BBC. If you believe anything on this page to be in breach of our House Rules, please click 'Complain about this post' next to the message in question. A moderator will then check the message as a matter of urgency.

This messageboard is currently closed. Please click "opening times" to check when messages can be posted.

SELF ACTING WATER PUMP Wendy Farr - 1st post - 9 Nov 2003 17:00
Did anyone see a feature recently concerning a new type of water pump which is driven by water, no electricity or other power involved? If so, can you explain how it works? I didn't see the programme myself but would appreciate any information on this subject. [reply]    [Complain about this post]

 
      re: SELF ACTING WATER PUMP Penny Stanford - 86th post - 9 Nov 2003 18:45
I haven't seen the programme either, but there has been a device around for some time which does this, called a hydraulic ram. (If you get a large scale map of the country round Stroud, you will see some mapped - I can't confirm any there, though.)

This uses the force of water flowing along a stream or river to pump a smaller quantity of water up to the site where it is needed. I can't draw a diagram here, but it involves valves bobbing up and down.

Penny [reply]    [Complain about this post]
 

           re: SELF ACTING WATER PUMP Penny Stanford - 87th post - 9 Nov 2003 18:58
If you use a search to find out howstuffworks and hydraulic ram, you will find a description, and if you search hydraulic ram and animation, you will find one that shows the way the movement works. The original was developed by the Montgolfier brothers in seventeen hundred and something.

Penny [reply]    [Complain about this post]
 

      re: SELF ACTING WATER PUMP n bret - 43rd post - 10 Nov 2003 10:22
Centre for Alternative Technology (CAT) and Intermediate Technology Development Group (ITDG) would be 2 places to look for designs and explanations.

Beside the hydraulic ram, I think there is also a tube laid on a stream bed which uses the flow of water to push air/water around a secondary circuit, again not that new though. [reply]    [Complain about this post]
 

           re: SELF ACTING WATER PUMP Chris Reed - 48th post - 10 Nov 2003 10:53
There's a similair pump run from a tap that we used to use in chemistry - anyone know what that's called? [reply]    [Complain about this post]

 
                re: SELF ACTING WATER PUMP alan calverd - 1471st post - 10 Nov 2003 14:31
entrainment or venturi pump [reply]    [Complain about this post]

 

[older discussion] 1 [newer discussion]

Home Back to Top House RulesMessage Board Hosts
 


Terms of Use | Privacy