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NASA patented a type of solar-powered Stirling engine on August 3, 1976. It used solar energy to pump water from a river, lake, or stream. [1] The purpose of this apparatus is to “provide a low-cost, low-technology pump having particular utility in irrigation systems employed in underdeveloped arid regions of the earth…[using] the basic principles of the Stirling heat engine“.
For more than a decade, NASA has been studying how to use Stirling engines as a reliable power source to augment solar power and fuel cells for both spacecraft and space colonies.
A Stirling engine cannot start instantly; it literally needs to "warm up". This is true of all external combustion engines, but the warm up time may be longer for Stirlings than for others of this type such as steam engines. Stirling engines are best used as constant speed engines.
Solar engine, a circuit which stores energy from solar cells in a capacitor and releases it in pulses to animate toys Stirling engine , a heat engine of the external combustion piston engine type whose heat-exchange process allows for near-ideal efficiency in conversion of heat into mechanical movement
A Stirling engine eliminates the need for water anywhere in the cycle. This would have advantages for nuclear installations in dry regions. United States government labs have developed a modern Stirling engine design known as the Stirling radioisotope generator for use in space exploration. It is designed to generate electricity for deep space ...
Stirling Energy Systems was a Scottsdale, Arizona-based company which developed equipment for utility-scale renewable energy power plants and distributed electrical generating systems using parabolic dish and stirling engine technology, touted as the highest efficiency solar technology.
In some cases, the Stirling engine may be suitable for local fabrication, eliminating the difficulty of importing equipment. One form of Stirling engine is the fluidyne engine, which operates directly on the pumped fluid as a piston. Fluidyne solar pumps have been studied since 1987. [12]
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