Accession Number:

ADA393839

Title:

Heat-Transfer and Pressure Drop Correlations for Hydrogen and Nitrogen Flowing Through Tungsten Wire Mesh at Temperatures to 5200 degree R

Descriptive Note:

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CENTER

Report Date:

1965-07-01

Pagination or Media Count:

29.0

Abstract:

Correlations for variable property heat-transfer and friction pressure drop data were obtained for forced convection of hydrogen and nitrogen through electrically heated tungsten wire mesh. These correlations represent the data of six different helically coiled wire meshes for the following range of conditions i Mesh porosity of 64 to 72.2 percent 2 Wire diameter of 0.020 to 0.035 inch 3 Surface temperature of 14000 to 52000 R 4 Outlet gas temperature of 6000 to 24000 R s Mass velocity for hydrogen of 0.4 to 3.1 lbsecs ft and for nitrogen of 4.5 to 10.2 lbsecsq ft 6 Heat flux of 0.5 to 8.3 Btusecsq in. 7 Pressure level of 1 atmosphere The effect of flow bypass, resulting from a mesh heater not filling the flow passage, was investigated on a 0.030-inch-diameter wire mesh for a bypass area of 25 percent.

Subject Categories:

  • Organic Chemistry
  • Fluid Mechanics
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE