Examples of individual downhole heat exchangers systems in Klamath Falls
- Oregon Inst. of Tech., Klamath Falls, OR (United States). Geo-Heat Center
The downhole heat exchanger (DHE), used extensively in Klamath Falls in over 500 installations, provides heating for one or more homes from a single geothermal well. The DHE eliminates the problem of disposal for geothermal fluids, since only heat is taken from the well. The heat exchangers consists of a loop of pipe or tubes (locally called a coil) suspended in the geothermal well through which clean secondary city water is pumped or allowed to circulate by natural convection. These systems offer substantial economic savings over surface heat exchangers where a single-well system is adequate. The maximum output of large installations is typically less than 2.73 {times} 10{sup 6} Btu/hr or 0.8 MWt, with well depths up to about 500 feet, and may be economical under certain conditions at well depths of 1500 feet. However, typical DHE output for individual homes tends to be less than 250,000 Btu/hr or 0.07 MWt. The paper describes a basic installation and a complex installation.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG01-99EE35098
- OSTI ID:
- 691517
- Journal Information:
- Geo-Heat Center Quarterly Bulletin, Vol. 20, Issue 3; Other Information: PBD: Sep 1999
- Country of Publication:
- United States
- Language:
- English
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