Viscosity of the Helium-Nitrogen System from 133 Deg. To 740 Deg. K for Pressures Between 1 and 240 Atmospheres

Details

• Personal Author:
  Boone WJ Jr. ; Wood RE
• Description:
  The temperature dependency of the low-density viscosity coefficients, nt, of helium and of nitrogen, 100 deg. to 1,000 deg. K, is correlated with empiricial equations, and the temperature and composition dependencies of the low-density viscosity coefficients, nt, of helium-nitrogen mixtures are correlated with the chapman- enskog expressions by using the Lennard-Jones (6:12) potential function. The residual viscosity, nt,p--nt (the difference between the viscosity of a compressed gas and the dilute gas at a given temperature), was found to be a function of the thermal pressure coefficient, (ap/at)v, and two parameters, a and b, which are characteristic of gas composition. The equation nt,p = nt + a [ap/at)v]b represented 1,340 higher pressure experimental viscosity values with a mean absolute deviation of 0.86 percent, and this equation was used to compute viscosities of the gaseous helium-nitrogen for a range of temperatures and pressures. Tabular viscosities for helium, nitrogen, and 13 helium-nitrogen mixtures are presented for 110 temperatures, 133 deg. to 740 deg. K, and 49 pressures in the range 1 to 240 atmospheres. It is estimated that uncertainties in the computed viscosity values are +/-5 percent for the region 325 deg. to 740 deg. K, +/-2 percent for the region 183 deg. to 325 deg. K, and +/-5 percent for temperatures below 183 deg. K. The latter uncertainty may rise to +/-10 percent as critical conditions are approached. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Conference Publications ; Case Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HEFO - Helium Field Office
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-130
• NIOSHTIC Number:
  nn:10009062
• NTIS Accession Number:
  PB-193209
• Citation:
  NTIS: PB 193 209 :130 pages
• Federal Fiscal Year:
  1970
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 193 209
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:36e06c377d0760d87b92d68667cfc54ee8a2a76427a9ee52e13d79c12b1c33661d3f2ecd588ed928ce4c5e7076e199c7314da302d90b08410740dda1d48f0ef2
• Download URL:
  https://stacks.cdc.gov/view/cdc/237291/cdc_237291_DS1.pdf
• File Type:
  [PDF - 61.35 MB ]