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
Hi Folks:
Something I haven't done yet.
One apparently can "cook up" canned electric, gas, oil, steam (etc)
rates in eQuest and place them in the Rates folder for use at any time.
I understand that .ewr is electric and .gwr is gas. I have not seen any
other rates extensions allowed.
Has anyone built their own library of rates? Do you develop the rates in
an .INP file, cut out the rate to paste to another file, then give it an
appropriate extension?
Hopefully a slow week for many, so perhaps an answer.
John R. Aulbach, PE, CEM
John,
In the Site/Project/Utility Component block of the DD wizard, the Electric and Gas Utility Rate Charges screens each have a disk icon to allow saving of the rate structures. Do it once then the next time you use the DD wizard, they will be there to select on the General Information screen. I believe the rate folder files are only available from within the wizard to be pulled into the wizard created inp file. I do not believe you can reference them like a library item.
Paul Riemer