Method of tempering river water for the hatching and breeding of fish, especially trout and salmon

摘要

1,104,261. Utilizing natural heat; plate heat exchangers. R. EGGESBÍ. 20 April, 1965, No. 16522/65. Headings F4S and F4U. River water for fish hatching and breeding is maintained at a constant temperature throughout the year by passing it through a heat exchanger submerged in the sea before feeding it to the hatchery pools. The heat exchanger may comprise plates B connected to inlet and outlet headers A, C. In a modification, the heat exchanger comprises a series of vertically spaced horizontal elongated or horse shoe shaped pipes with intermediate supports held in position on the sea bed.