[Equest-users] Difference in Heating Energy - Identical SYSTEM application

[John Aulbach]

Hi all:

I am trying to simulate hot water radiators in an older building (No Cooling). My 1st choice was 4-pipe fan coil with no cooling. Then someone told me to run DX cooling with a hot water coil (again, cooling zeroed out).

The DX approach causes a heating increase of approximately double the energy. No pumping energy increase. Fans have airflow but zero HP.

What could be causing this?

Thanks.

John R. Aulbach, PE, CEM
Senior Energy Engineer

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