Dear Keigo,

Before E+ had a pool object, I developed a swimming pool calculation procedure that uses:

• The Shah procedure for deriving indoor evaporation
• Creating an OtherEquipment latent load that is equivalent to the evaporation
• Creating an OtherEquipment evaporation (cooling) load that is equal and opposite to the evaporation
• Using an air loop and heating system with properties matching those specified.

The procedure works well. If you would like more detail, please send an email to me using my UnmetHours contact information