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Best regards
Zmags
www.contractormag.com
A Penton Publication AUGUST 2011
A newly-built house ready
to be connected to the
local geothermal utility.
City of Wyandotte,
Mich., creates a
geothermal utility
By Steve Spaulding
Of CONTRACTORs sTAff
WYANDOTTE, MICH. The principle behind geothermal
heating and cooling is a simple one: dig down toward the
bedrock almost anywhere in the world and you reach a
stable temperature zone that
is somewhere between 52°F
and 55°F year-round. By us-
ing water circulated in a deep
enough ground well as an en-
ergy transfer medium, you get
the ∆T between well tempera-
ture and surface temperature
cooling power on hot days,
heating power
www.contractormag.com A Penton Publication
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