I would like to simulate a primary/secondary hot water loop.
All the flow rates are autosize, the pump head for both primary and secondary loop are 60ft. There is just one boiler and I don't set up the pump stage. Primary pump is constant speed while secondary pump is variable.
I checked the "Pump Electric Energy" after the annual simulation and expected that the MAXIMUM pump electric energy of the secondary loop would not be huge different from primary loop, maybe half of it or something similar. However, that number was just 1% of primary loop electric consumption which I think is totally unreasonable.
Anyone has similar experience before? Is it because I didn't set up the pump stage?
