HTRI mixture evaporation input problem
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Recently, I encountered a problem while using HTRI to perform calculations for shell-and-tube heat exchangers. The inlet stream is a mixture of sulfuric acid and hydrofluoric acid, which is partially vaporized by steam; the mixture of sulfuric acid and hydrofluoric acid flows through the tube side. I would like to ask whether it is sufficient to simply select the VMGThermo property package for the cold fluid components, choose HF and sulfuric acid, and enter their mass ratio, or whether it is necessary to use the Property generator in the cold fluid properties interface to create a mixture property set before importing it into the property grid. The results obtained using these two methods differ significantly, even when the same input values are used; I’m not sure why this is the case.
Has anyone encountered a similar problem?
Great material, thanks to the original poster for sharing it
The physical properties should be the same in both methods; is it a matter of temperature and pressure?