Water Pumps

Archimedes Screw

See also:

• http://www.rhizomecollective.org/virtualTour.html Wind powered pump made from a bike wheel and bicycle pump.+
• http://www.mcs.drexel.edu/~crorres/Archimedes/Screw/SourcesScrew.html Archimedes Screw
  • http://www.mcs.drexel.edu/~crorres/screw/screw.pdf Calculating the optimal design of an Archimedes Screw Pump.

Spiral Waterwheel Pump +

Rope Pumps

• http://www.wot.utwente.nl/documents/publications/1999_ropepump/ropepump/index.html Very complete construction manual
• http://www.unep.or.jp/ietc/publications/techpublications/techpub-8a/rope.asp Rope and Washer pump
• http://www.amazon.com/exec/obidos/ASIN/1853390224 How to Make a Rope Washer Pump by Robert Lambert

Ram Pumps

• http://journeytoforever.org/at_waterpump.html Ram pumps
  also: Humphrey Pumps, Great Pyramid

Bubble Pumps

Commonly found in aquariums (although impeller pumps seem to be making headway) these work by injecting air into the bottom of a vertical tube which is open at both ends and placed with its top sticking up above the water surface and its bottom some depth below the waters surface. The bubbles rise and expand and water is driven up the tube by the ascending bubbles. Water (and air) exit from the top of the tube.

A bubble pump operates most efficiently when the bubbles fill the tube from side to side and are seperated from one another by a slug of water. The maximum diameter tube in which this "slug flow" occurs is given by the following equation (Chisholm, 1983):

where vf and vg are the specific volumes of the liquid and vapor respectively, and à (sigma) is the surface tension. Note, for a given fluid in a tube of diameter greater than that predicted by this equation, slug flow will never occur.

When used to pump water, 60% of the length of the pump must be submerged and you will need 0.43 psi of air pressure for each foot of water above the outlet of your air tube.

• http://www.me.gatech.edu/energy/andy_phd/three.htm
• http://www.me.gatech.edu/energy/andy_phd/four.htm
• http://www.geocities.com/davidmdelaney/geyser/Sorensens-bubble-pump.html
• http://www.absalom.com/mormon/health/water-pumps.htm
• http://www.bubbleactionpumps.com/bubble_pump_manual/bubble_pump_manual_index.htm
• http://www.bubbleactionpumps.com/bubble_pump_manual/components_bubble_pump.htm
• http://www.airliftech.com/ Windmill driven bubble pump.

+Other:

• http://www.tpub.com/content/engine/14105/css/14105_47.htm +
• http://www.millennium-ark.net/News_Files/INFO_Files/Hand_Pump.html Easy to build check valve hand pump. With parts list and instructions.
• http://www.thepump.org/art6completeGPpump3.html Was the Great Pyramid a combustion powered water pump?
  • http://www.thepump.org/jet.html
• http://www.fortunecity.com/greenfield/bp/16/hump.htm Humphrey Pumps
• http://physics.kenyon.edu/EarlyApparatus/Fluids/Pump/Pump.html Early Lab pumps
• http://www.wedoweelake.com/~aprotech/apttable.htm Appropriate Technology including several pumps. Not much detail
• http://www.experimentarium.dk/uk/naturvidenskab_og_teknik/schiolers/index.html Photo collection of water lifting devices.

Also:

• Wind power

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