An irrigation system comprising a closed-loop piping system a portion of which is a condensing section extending on or adjacent below ground surface, and at least another portion of which is a cool-collecting section /buied under ground at a cool ground zone. The closed-loop piping holding a liquid which is propelled by a circulating system fitted along the piping system. The liquid is chilled by heat exchanging at the cool ground zone and then flows to the condensing section where moisture from the vicinity is extracted by condensation over the by condensing section, readily available for consumption by agriculture growth. US2002141828A1
