Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
You have specified the coil rated parameters before you know what the actual coil load or entering air conditions are. I realize this seems counter-intuitive, but in EnergyPlus the design conditions are not really used as you would expect. When the water coil is sized it looks at the simulated coil entering air and water temps. The water temp is probably close to what you have specified here as long as the chilled water plant uses the same temperature. But the coil entering air temperature may be very different from what you have "hard-sized" here. You should set all these inputs to autosize and then look in the eio file for the results. Then compare those results with what you have entered here. You might then be able to use some of your inputs when considering the autosized value for each of these inputs. Alternately you might need to get the rated conditions for a different size coil and enter those.
Also, notice in the warnings that the water flow rate was changed for some coils. This is because the outlet water temperature calculated by the water coil model was higher than the entering air temperature entered here. It is very difficult to anticipate what the operating conditions of the coil will be before you simulate that coil in the building model.
