All -

I need to model fluid cooler energy use in conjunction with refrigeration systems, and since eQuest Refrigeration Version cannot model water based HVAC, I am attempting to do this via a spreadsheet. I have calculated the hourly net water loop loads, and I know or can derive other hourly variables such as gpm, outdoor wet bulb, range and approach, but I am not sure how to apply the default curve-fit polynomials to get the required fluid cooler fan airflow ratio. At least, I can't get my logic to match a sample non-refrig test case.

Does anyone know or can anyone point me to documentation to show how this is done?

Thanks,

Dave Driver, PE