美国DuraMax龙骨冷却器样本.pdf

HEAT EXCHANGE SYSTEMS ® DuraCooler Keel Cooler Streamlined Header Design for Improved Efficiency One Piece 90/10 Copper-Nickel Construction Superior Heat Transfer Available in Flange-Mount or Through-Hull Designs PRODUCT INFORMATION AND SELECTION GUIDE ® DuraCoolers With Streamlined Header Design Significantly Increases Heat Transfer Efficiency. Duramax Marine® conducted extensive research to identify opportunities to improve the operational efficiency of the traditional square-header keel cooler. Through finite element computer studies, we discovered the traditional square-header keel cooler design caused certain inefficiencies. Full-scale tests were conducted to determine internal and external flow patterns, system pressure loss and Advantages of the DuraCooler® heat transfer characteristics for different heat exchanger geometries. streamlined header design. It was discovered that the outside tubes of the keel cooler have Enhanced interior and exterior flow patterns the greater potential for heat rejection per lineal foot but due Reduced pressure drop to internal geometry this potential was not being realized. Increased heat transfer efficiency (See test results on next page.) Greatly increased heat rejection in outside tubes Provides better fuel efficiency due to less drag