When running the simulation of a building with 8 conditioned spaces, I wanted to see what the capacity of the heaters should be to fulfill the temperature setpoints I set. The only comparible data I could find in the results are the design size nominal capacity compared to the user-specified nominal capacity. The results I got are in the table below. The minimum temperatures for the PTAC and Coil 6 are set for 15 degrees C for the entire year. The other setpoints are either at 5 degrees for the entire year, or 20 degrees once a week during office hours.
I expected some differences in the results, but not this large. Also, for the bathroom (coil 5) apparently I need more than 3 times the capacity than for the pantry (coil 7), while they have the same setpoints and the pantry has a larger space area. This too seems odd. Could someone please explain why these numbers are off (by this much) and if the design size nominal capacity is the correct way to look at what capacity I would need to fulfill the setpoints?
Thanks
Design Size Nominal Capacity [W] User-Specified Nominal Capacity [W]
COIL HEATING ELECTRIC 1 5614.64 1000.00
COIL HEATING ELECTRIC 2 5699.91 1000.00
COIL HEATING ELECTRIC 3 2291.29 2000.00
COIL HEATING ELECTRIC 4 2893.05 2000.00
COIL HEATING ELECTRIC 5 9292.89 1000.00
COIL HEATING ELECTRIC 6 17418.09 1000.00
COIL HEATING ELECTRIC 7 3020.91 2000.00
PTAC ELEC HTG COIL 25180.63 2000.00
I added my model in case this is not clear: https://we.tl/yZq0kS1XyM
