A Water Distribution System for Cold Regions. The Single Main Recirculating Method. An Historical Review, Field Evaluation, and Suggested Design Procedures

摘要

The report describes the single-main recirculating water distribution system used in arctic and sub-arctic communities to prevent water main freezing. An historical review, data from a prototype installation, and recommended design procedures are included for Far North facilities. The field data was obtained at Unalakleet, Alaska, a community on Norton Sound, an arm of the Bering Sea. Over a year of continuous data were obtained starting at the time the installation was constructed in 1965. The described facility is one of three presently in existence. (Author)