Geothermal system at Pa. college uses PVC drop pipe.(Applications in the Field)(Brief Article) From: Snips | Date: April 1, 2004 | COPYRIGHT 2004 BNP Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information) Copyright information

VALLEY FORGE, Pa. -- Nearly 40,000 feet of CertainTeed Corp.'s Certa-Lok drop pipe has been used in the construction of a new geothermal heat system at the U.S. Army War College in Carlisle, Pa.

Some of the 67 wells drilled by Connecticut Wells Inc. of Bethlehem, Conn., contain the polyvinyl chloride, or PVC, drop pipe. The casing functions as a porter shroud to protect the pump and water pipe in each of the wells. The wells range in depth from 350 to 1,000 feet.

The geothermal system, which works by extracting heat from ground water, is replacing a dated central steam ...

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