Solar pump for water

[Category : - RENEWABLE ENERGY - Pumps]
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The solar pump is intended for lifting and swapping of water from wells. It is based on a cycle of Stirling engine and uses a difference of temperatures of sun warmed metal and cold water from a well. It has two cylinders, very simple design and self-start. At the area of heating of 2 square metres it lifts over 300 l of water per hour from depth of 5 m. Any special tools or machines are not required. Materials for a cheap variant stand only 150$. Look a site:
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Starting price: 20,000 USD

Current price: 20,000 USD

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Started: 2013-03-24 06:21:39

Closing: 2015-03-24 06:00:00

Seller: arkadiy (Russian Federation)

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Page created at 2015-03-06 3:23:16, Patent Auction Time.