Eggertson, Bill <br/><br/>
Earth energy: on ground-source heat pumps 

<br/><br/>Earth energy systems use the solar energy stored within the ground, to provide heating and cooling for buildings. Worldwide, tens of thousands of systems are being installed each year, leading to considerable savings in Co2 emissions. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EARTH ENERGY SYSTEMS<br/>SOLAR ENERGY STORED<br/>ENERGY REQUIREMENTS<br/>EARTH ENERGY TECHNOLOGY<br/>CONVENTIONAL HEATING-COOLING<br/>GLOBAL WARMING
<br/><br/><label>Universal Decimal Class. No.: </label>H620.91 REN