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<a href="http://www.accessmylibrary.com/coms2/summary_0286-37345662_ITM" title="Facts and information about Revised standardized equation for hydrogen gas densities for fuel consumption applications.">Revised standardized equation for hydrogen gas densities for fuel consumption applications.</a>
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Revised standardized equation for hydrogen gas densities for fuel consumption applications.
An equation for the density of hydrogen gas has been developed that agrees with the current standard to within 0.01 % from 220 K to 1000 K with pressures up to 70 MPa, to within 0.01 % from 255 K to 1000 K with pressures to 120 MPa, and to within 0.1 % from 200 K to 1000 K up to 200 MPa. The equation is a truncated virial-type equation based on pressure and temperature dependent terms. The density uncertainty for this equation is the same as the current standard and is estimated to be 0.04 % (combined uncertainty with a coverage factor of 2) between 250 K and 450 K for all pressures, and 0.1 % for lower temperatures. Comparisons are presented with experimental data and ...
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