Dear All,
I have a question on Type 676. According to the help documents, the
energy delivered to the chiller by the steam source is calculated
using equation 676.4
Qsteam=(Capacity_rated/COP_rated)*F_designEnergyInput.
The F_designEnergyInput is the value returned by the thrid call to
Dynamic Data and is the value specified in the S3 data file. It only
is the function of cooling water temperature and the fraction of
design load, which is calcuated by equation 676.3 .
f_DesignLoad=Q_remove/Capacity_rated
The energy consumption calculation is only based on the fraction of
design load, cooling water temperature and don't consider chilled
water outlet temperature. The chilled outlet temperature is only used
for calculating Capacity (specified in the S2 file).
In my opinion, I don't think this model can calculate the energy
consumption correctly, when the chilled water supply temperature is
reset.
Thanks
Lei Wang
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