ReferBookmarks - 123 Zero Energy Provide Quality Geothermal Systems A geothermal system collects energy from the earth through a series of interconnected piping and a heat transfer fluid flowing through the pipes.Geothermal systems take full advantage of the sun likewise any other solar systems. But they do this job indirectly by harvesting the solar energy that has been absorbed by the earth throughout the year. Even in the cold climates, only the top of the eart... Fri, 12 Jan 2018 06:37:32 UTC en