Test Results of Heat Exchanger Cleaning Support of Ocean Thermal Energy Conversion

摘要

This report documents tests conducted at the Naval Coastal Systems Center (NCSC) in support of the Department of Energy's Ocean Thermal Energy Cot version (OTEC) Program. These tests covered the period September 1978 to May 1980 and evaluated flow-driven brushes, recirculating sponge rubber balls, chlorination, and mechanical system/chlorination combinations for in-situ cleanign of two potential heat exchanger materials: titanium and aluminum alloy 5052. Tests were successful when fouling resistance was ＜3.0x10-4 ft² hr-°F/Btu. Results indicated systems and cleaning techniques using brushes, soft sponge balls, and various concentrations of chlorine had some potential for maintaining heat transfer efficiency.