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)able J Page J <br />'yr., <br />Advantages <br />6) closeu loop of `reun placed in - freon is more efficient for lk-at <br />surface waters or In the ground transfer than water <br />I1. Appiicat,. o--.,lgned specifically for <br />commercla. use. <br />A. Extraction and reinjection well <br />1) annual cycle systems <br />alternating supply and einJP(- <br />tion wells for thervaal storage. <br />Thus heated water reinjected in <br />the summer Is used as supply <br />water for winter heating. Some <br />system even employ ice makers <br />to create an efficient heat <br />sirrk for sueraer cool Inq. <br />2) storage tanks <br />?) cooling lowers <br />8. Closed look, systems <br />1► systems that recover thermal <br />energy from exhaust air <br />Z) several heat pumps used to sup <br />ply simuitancous heatinq and <br />cooling <br />same as domestic <br />- has been found to be relativelyy cost <br />effective since the theraal storage <br />increases efficiency <br />more efficient it! larger SY5UNIs si,Ke <br />laryer volumes of water are better for <br />thermal storage <br />cowls water In the summer for more <br />efficient heat infusion <br />uses otherwise wasted energy <br />Ideal for buildings with fialanced <br />heating and cooling needs, such as <br />cuoling a computer room and using the <br />heated effluent to heal office space <br />Ulsadvantages <br />the amount of freon needed could be cost prohibitive <br />freon tends to bake clay soil, thus must be packed <br />with sandy soil, or the efficiency of heat transfer <br />will decrease <br />same, as domestic <br />may create thermal pollution problems in carbonate <br />aquifers that have solution cavities <br />same es domestic applications <br />may be more efficient to use direct heat applications <br />mwy need a back up system in the winter when heat11ry <br />needs predominate <br />