Supercritical Hydrogen
Supercritical Hydrogen
(OP)
Hi Folks,
I have to heat up (from 20 °C to 600°C) a mix of Methane and Hydrogen under a pressure of 200 bar. I need the hydrogen´s thermophisical properties under those conditions. Does someone know some internet site or handbook where I can retrieve these properties?
THX
I have to heat up (from 20 °C to 600°C) a mix of Methane and Hydrogen under a pressure of 200 bar. I need the hydrogen´s thermophisical properties under those conditions. Does someone know some internet site or handbook where I can retrieve these properties?
THX





RE: Supercritical Hydrogen
Perry, Chemical Engineering Manual. I have the sixth edition. It has table 3-248b with properties (specific volume, enthalpy and entropy) up to 1000 K and 1000 bar.
http://webbook.nist.gov/chemistry
shows more thermophysical properties, but goes up to 126.9oC and 1210 bar
RE: Supercritical Hydrogen
RE: Supercritical Hydrogen
Thanks for the undeserved star.
The answer on Perry is regretfully no.
J.P. Holman's Heat Transfer (McGraw-Hill) Table A-6, shows these properties at atmospheric pressure up to 900 K.
Please note the expected changes due to pressure are small.
From the NIST site I got that at 125oC the "additions" when going from 1 bar to 200 bar are: for specific heat, 1.5%; for absolute viscosity 3.4%, and for thermal conductivity, 5.4%. Which tells us that the Pr number practically doesn't change with pressure.
Sorry, that's all I could gather on hydrogen from my sources.
RE: Supercritical Hydrogen
R.D. McCarty, J. Hord, H.M. Roder (1981)
http://
It´s almost exaustive, there are almost all the hydrogen´s properties. :)
Thx again
RE: Supercritical Hydrogen
Cheers,
Joerd
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