Design Considerations of a Down-Hole Coaxial Geothermal Heat Exchanger
- Key words
- Direct Use; Heat exchanger; Coaxial heat exchanger; Downhole heat exchanger; Optimization; Energy transfer; Analysis
- Conference
- Geothermal Resources Council Transactions
- Year
- 1980
- Session
- Direct use; Downhole heat exchangers
- Language
- English
Abstract
This report is an analysis of the performance of a coaxial heat exchanger used for the extraction of heat form a geothermal well, for use in space or process heating. The calculations are based on conductive heat transfer into the well and are therefore a lower bound on the performance of such s system, since in most cases heat will be transferred to well convectively. The analysis makes use of a full solution to the problem including temperature variation with depth, transfer between inner and outer tubes, frication and the cooling of the formation with time.
Copyright 1980, Geothermal Resources Council. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.