Geothermal Heat Exchanger Test at Heber, California. Final Report

摘要

A tube-in-shell counterflow heat exchanger, having four sections in series, was tested for approximately 2000 hours under field conditions. The objective of the test was to measure long term corrosion and fouling rates for use in commercial plant design. The geothermal brine used in the test was produced from the Nowlin No. 1 well at the Heber geothermal field in California. Alternate sections of the heat exchanger were tubed with steel and titanium. The purpose of two material types was to facilitate data on both from a single test. Heat transfer degradation was calculated throughout the test. At the conclusion of the test, the tubes were removed, sectioned, and analyzed. Heat transfer coefficients, fouling factors, corrosion rate and scale characteristics are reported. (ERA citation 04:010115)