Water to Water HP coefficient curves
Hello,
I've developed curves for water-to-water heat pumps before, but now I am getting errors with different manufacturers and capacities.
The information found in https://www.nordicghp.com/wp-content/... (page 11) is filled in the attachment "Nordic HP-Commercial-WWH-Series-800.xlsx"
When I click on generate parameters in the curve generator file, an error appears saying Run-time error '5'.
It looks like the spreadsheet can't handle the capacity for the heat pump, or maybe it is because there is R22 refrigerant in the Excel whereas my unit is R410a.
It doesn't look that E+ has updated spreadsheets for this purpose. I sent a support ticket a month ago to E+ Support. Any help here will be appreciated.
Spreadsheets in this link (https://1drv.ms/u/s!Aq3pqwzB1VTOgP9EB...)
Regards, Paul
@paulcaicedo it looks like your first URL to Nordic heat pump manufacturer test data is not valid anymore. Is this the correct link?
https://www.nordicghp.com/wp-content/...
I can confirm the same
Run-time error '5': Invalid procedure call or argumentmessage trying to use the (2) Generate Parameters button of the ParamEstimator sheet. Debugging VBA goes to the following code line in the DHLAT public function for latent heat of vaporization:FLOG = Log(F(IR) - TSAT) / Log(10)I believe that a good explanation is that the actual heat pump uses R410a, but that isn't even an option in this spreadsheet tool (cell B4 of the ParamEstimator sheet). @MJWitte@JasonGlazer@rraustad any ideas?
@paulcaicedo can you provide a link to the EnergyPlus support ticket?
Thanks for your reply Aaron. That is the correct link. The support ticket is #16269 Water to Water HP
I opened the code in Visual Basic and it looks like Kenneth Tang created the spreadsheets. Here is his thesis.