L E G A C Y
Citation URL: http://www.osti.gov/geothermal/product.biblio.jsp?osti_id=895110
||Chapter 11. Heat Exchangers|
Rafferty, Kevin D.
|Publication Date:||1998 Jan 01|
|OSTI Identifier:||OSTI 895110|
|DOE Contract Number:|
|Research Org:||Geo-Heat Center, Klamath Falls, Oregon|
|Subject:||15 GEOTHERMAL ENERGY|
|Description/Abstract:||Most geothermal fluids, because of their elevated
temperature, contain a variety of dissolved chemicals. These
chemicals are frequently corrosive toward standard materials
of construction. As a result, it is advisable in most cases to
isolate the geothermal fluid from the process to which heat
is being transferred.
The task of heat transfer from the geothermal fluid to a
closed process loop is most often handled by a plate heat
exchanger. The two most common types used in geothermal
applications are: bolted and brazed.
For smaller systems, in geothermal resource areas of a
specific character, downhole heat exchangers (DHEs) provide
a unique means of heat extraction. These devices eliminate
the requirement for physical removal of fluid from the
well. For this reason, DHE-based systems avoid entirely the
environmental and practical problems associated with fluid
Shell and tube heat exchangers play only a minor role in
low-temperature, direct-use systems. These units have been
in common use in industrial applications for many years and,
as a result, are well understood. For these reasons, shell and
tube heat exchangers will not be covered in this chapter.|
|Country of Publication:||US|
|System Entry Date:||2008 Oct 06|
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