Abstract
A new correlation and computer code have been developed for helium. The correlation covers the temperature range of 0.8 to 1500 K using two equations of state, one for superfluid helium and another for the normal fluid. The equation of state for the normal fluid is valid for temperatures between 2 and 1500 K and for pressures up to 2000 MPa. The new normal fluid equation of state achieves increased accuracy in some regions of pressure and temperature, but not in others. There are unique problems involved in the correlation of helium data which prevent obtaining the accuracies which are more easily obtained for the properties of other fluids. Only the normal fluid equations are given here.
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