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Title: Large downhole heat exchanger in Turkey and Oregon

Abstract

The multi-tube DHE is more economical to install in shallow wells with high-static water levels; since it can be installed with lighter equipment and has a high output for its short length, it does not require drilling beyond the hot aquifer when the aquifer is near the surface. The vertical convection in the well must also be high to provide adequate heat transfer to the loops. For energy outputs for large demands, the DHE is normally not adequate and thus, some form of pumping with a surface heat exchanger is necessary. A Turkish installation is described that is part of the geothermal district heating system on the west coast of Turkey. A multiple loop installation in Klamath Falls, Oregon is also described.

Authors:
 [1]
  1. Oregon Inst. of Tech., Klamath Falls, OR (United States). Geo-Heat Center
Publication Date:
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
691516
DOE Contract Number:  
FG01-99EE35098
Resource Type:
Journal Article
Journal Name:
Geo-Heat Center Quarterly Bulletin
Additional Journal Information:
Journal Volume: 20; Journal Issue: 3; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; GEOTHERMAL WELLS; HEAT EXCHANGERS; DESIGN; OREGON; TURKEY; GEOTHERMAL DISTRICT HEATING

Citation Formats

Lund, J.W. Large downhole heat exchanger in Turkey and Oregon. United States: N. p., 1999. Web.
Lund, J.W. Large downhole heat exchanger in Turkey and Oregon. United States.
Lund, J.W. Wed . "Large downhole heat exchanger in Turkey and Oregon". United States.
@article{osti_691516,
title = {Large downhole heat exchanger in Turkey and Oregon},
author = {Lund, J.W.},
abstractNote = {The multi-tube DHE is more economical to install in shallow wells with high-static water levels; since it can be installed with lighter equipment and has a high output for its short length, it does not require drilling beyond the hot aquifer when the aquifer is near the surface. The vertical convection in the well must also be high to provide adequate heat transfer to the loops. For energy outputs for large demands, the DHE is normally not adequate and thus, some form of pumping with a surface heat exchanger is necessary. A Turkish installation is described that is part of the geothermal district heating system on the west coast of Turkey. A multiple loop installation in Klamath Falls, Oregon is also described.},
doi = {},
journal = {Geo-Heat Center Quarterly Bulletin},
number = 3,
volume = 20,
place = {United States},
year = {1999},
month = {9}
}