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initial version

answered Apr 3

PmP's avatar

The equation describes sensible heat balance by definition. "The Zone Air Heat Balance Air Energy Storage Rate is the heat stored, in watts, in the zone air as result of zone air temperature changing from one timestep to the next", not by enthalpy changes, where humidity would be accounted for and therefore, latent heat removal would appear.

The fact that Q_sys is sensible cooling and not total cooling actually validates the heat sensible heat balance.

You could try to do the latent heat balance with terms of humidity changes in the zone air in the left and latent heat removal on the right of the equation.

Now if this condensation is a representation of a real phenomenon that is happening on the warehouse, or a simulation artifact that happens because of how the system is modelled, is up to the modeller to know!

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No.2 Revision

The equation describes sensible heat balance by definition. "The Zone Air Heat Balance Air Energy Storage Rate is the heat stored, in watts, in the zone air as result of zone air temperature changing from one timestep to the next", not by enthalpy changes, where humidity would be accounted for and therefore, latent heat removal would appear.

The fact that Q_sys is sensible cooling and not total cooling actually validates the heat sensible heat balance.

You could try to do the latent heat balance with terms of humidity changes in the zone air in the left and latent heat removal on the right of the equation.

Now if this condensation is a representation of a real phenomenon that is happening on the warehouse, or a simulation artifact that happens because of how the system is modelled, is up to the modeller to know!