[EnergyPlus_Support] Humidifier water or steam?

[Sam Roose <sam@xxxxxxxxxxxxxxxxxxxxx>]

Is the output of the humidifier water consumption meter liquid water or
steam? The humidifier electric power in our simulation is a mere 3 kW
maximum for a building which has a 600 kW humidifier capacity and humidifier
loads are being met.

If it is water, 1.3 cubic metres equates to around 800 kWh (1300 litres of
water at .627 kWh/litre). If it is steam, 1.3 cubic metres of water equates
to around 0.5 kWh (1300 litres of steam x 0.8 kg of liquid water using the
conversion 1.674 m3/ kg steam, giving us 0.8 x .627 kWh/kg).

If it is steam, the figures we are getting are more believable. If it is
water, why is the humidifier only using 3 kW when 1.3 m3 of water is being
used? Could it be the variables we have used which are giving us such a low
reading (0.095 m3/s rated capacity, 600 kW rated power, 500 W fan power, 100
W standby power).

If it is steam, I suggest that you make it explicit in the documentation.

Thanks in advance

Sam Roose



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