3 Matching Results

Search Results

Advanced search parameters have been applied.

Experimental plan to determine the performance of the Oak Ridge National Laboratory Cold Neutron Moderator. Final report, September 1, 1993--November 30, 1993

Description: This paper outlines an experimental plan to test the thermohydraulic concept of the proposed Oak Ridge National Laboratory Cold Neutron Moderator. The goals, approach, description of the experimental apparatus, and proposed budget and duration are presented.
Date: November 10, 1993
Creator: Giarratano, P.J. & Siegwarth, J.D.
Partner: UNT Libraries Government Documents Department

Tests of Commercial Densimeters for LNG Service

Description: Abstract: Densimeters for liquefied natural gas (LNG) from four manufacturers were tested in liquid methane and an LNG-like mixture of methane, propane, and nitrogen in the density reference system (DRS). The calibration and performance of one type tested for the first time are reported. The stability of the calibrations and performances of three densimeters of a type previously tested have been examined and are also reported here.
Date: June 1982
Creator: Siegwarth, J. D. & LaBrecque, J. F.
Partner: UNT Libraries Government Documents Department

Cryogenic Fluids Density Reference System: Provisional Accuracy Statement (1980)

Description: Abstract: The improved Density Reference System, the reference densimeter, and the method of determining sample density are described. The uncertainty of the density reference system is + 0.055%. The contribution from the estimated systema -ic error in density was + 0.022%. The estimated uncertainty caused by random error is three times the standard deviation of 0.011% and is based on sixty-three measurements of the densities of saturated liquid methane. The total density uncertainty is taken to be the sum of the systematic and random errors. This applies to the density range of 400 to 480 kg/m at pressures from 0.8 to 4 bar absolute and temperatures between 109 and 128 K. This accuracy statement is expected to apply over ranges of at least 400 to 1000 kg/m3 in density, 77 to 300 K in temperature, and 0.8 to 7 bar in pressure though the accuracy over these ranges has not been verified.
Date: April 1981
Creator: Siegwarth, J. D. & LaBrecque, J. F.
Partner: UNT Libraries Government Documents Department