Abstract
Two types of solar water pumps for lift irrigation have been developed and tested. In this paper the thermodynamic and design aspects of the pumps are discussed. The pumps have no moving parts except for the check valves. No auxilliary power source or technical skill is required to run the pumps making both designs extremely suitable for rural lift irrigation. The running cost is nil except for the occasional use of an inexpensive organic fluid. Feasibility studies of the pumps indicate that they are economically viable and are within the means of an Indian farmer.
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