Accession Number:

ADD020027

Title:

Efficient Snowmaking with Polymer Drag Reduction

Descriptive Note:

Patent Application, Filed 28 Feb 2002

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

2002-06-05

Pagination or Media Count:

12.0

Abstract:

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.

Subject Categories:

  • Snow, Ice and Permafrost
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE