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1. 发明授权

US06797191B2 Efficient snowmaking with polymer drag reduction 失效
标题翻译：高效减雪的高效除雪
公开(公告)号：US06797191B2
公开(公告)日：2004-09-28
申请号：US10090987
申请日：2002-02-28
申请人： Richard B. Philips , Theresa A. Baus
发明人： Richard B. Philips , Theresa A. Baus
IPC分类号： C09K300
CPC分类号： F25C3/04 , F25C2303/0481
摘要： A method for reducing the drag on an aqueous solution in a pipe or hose system such as a snow making system includes the introduction of drag reducing polymers into the aqueous solution prior to circulating the solution in a pipe or hose. In a preferred embodiment, the drag reducing polymers are a mixture of polyethylene oxide in a carrier solution. The introduction of the polyethylene oxide in a carrier solution reduces the overall frictional drag and therefore increases the snow making efficiency by reducing the power needed to pump the water. As a result, it is easier for greater quantities of snow to be made using existing equipment due to the increased flow rate as a result of the lower drag friction. In a preferred embodiment, the polyethylene oxide is approximately 20-30% by weight and is introduced into the water pipe so resulting concentrations are approximately 30-100 weight parts per million (WPPM).
摘要翻译：用于减少诸如制雪系统的管道或软管系统中的水溶液上的阻力的方法包括在将溶液循环到管道或软管中之前将减阻聚合物引入水溶液中。在优选的实施方案中，减阻聚合物是聚环氧乙烷在载体溶液中的混合物。在载体溶液中引入聚环氧乙烷降低了总的摩擦阻力，因此通过减少泵送水所需的功率来增加制雪效率。因此，由于较低的阻力摩擦，由于增加的流量，更容易使用现有的设备来制造更多的积雪。在一个优选实施方案中，聚环氧乙烷为约20-30重量％，并被引入水管中，使得浓度约为30-100重量份（WPPM）。

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