GEOTHERMAL TECHNOLOGIES LEGACY COLLECTION - Bibliographic Citation


Bibliographic Citation



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Citation URL: http://www.osti.gov/geothermal/product.biblio.jsp?osti_id=895110
Title: Chapter 11. Heat Exchangers
Creator/Author: Rafferty, Kevin D. ; Culver, Gene
Publication Date:1998 Jan 01
OSTI Identifier:OSTI 895110
Report Number(s):None
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Document Type:Book
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Research Org:Geo-Heat Center, Klamath Falls, Oregon
Sponsoring Org:USDOE
Subject:15 GEOTHERMAL ENERGY
Keywords:Geothermal Legacy
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 disposal. 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.
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Country of Publication:US
Language:English
Size/Format:Medium: ED
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System Entry Date:2008 Oct 06
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