Gastherm Update for Gasworks and Solvgas

As of 2022 there is renewed interest in programs Gasworks and Solvgas, using Gastherm.dat as their thermodynamic data source. A significant issue is the absence of most digital records of the enthalpy, entropy, and heat capacity data that were used to compute the log K's for the gases. If logK's within Gastherm are to be modified (i.e. addition to or improvement upon) then records of enthalpy, entropy, and heat capacity are essential for each gas, mineral/solid, and liquid. Herein we document the construction of a new Gastherm database, and the data used for it. While the sources of data are well documented, all of it must be recompiled from scratch.

The 1990 version
A summary of the procedure to update Gastherm
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