Plant loop temperatures are getting far too hot
Hi everyone,
I'm Julio, and I'm running an energy simulation for a production plant with high cooling loads throughout most of the year. The system includes air-to-water heat pumps for both heating and cooling connected to cooling and heating coils in the AHU for space heating and cooling. The design temperatures for the cooling coils are 7/12C and 40/45C for the heating coils.
When I run the heating and cooling design week simulations, everything works fine. However, when I run the full-year simulation, I encounter a severe error that prevents the simulation from completing "Plant temperatures are getting far too hot". I've been stuck on this issue for a few days now and haven’t been able to figure out the cause or how to resolve it.
I’m not very experienced with advanced energy modeling, so troubleshooting this error has been quite challenging. I’d really appreciate any insights or suggestions from those familiar with similar issues.
Thanks in advance for any help.C:\fakepath\Severe error.JPG C:\fakepath\Heating and cooling heat pumps.JPG C:\fakepath\Plant loop temperatures.JPG C:\fakepath\Fluid to fluid hx.JPG C:\fakepath\Set point manager outdoor control.JPG
Hello, According to your error message, the problem is in your "HW secondary loop". looking at your HVAC schematic, I see you are using design builder, but I can't quite tell which loop this is. Please specify which loop is getting the error and provide the schematic and input dialogs for that loop.
Also, I don't see any air-to-water heat pumps. I see W2W HPs and air cooled chillers and a fluid cooler.
Hi Greg, Yes, the secondary loop is the one from the HX to the AHU heating Coils. Design Builder Version 6 cannot model ASHP, this is the closest I could think of. I share the screenshot of the settings for the secondary loop in Google drive. https://drive.google.com/file/d/1TiMk...https://drive.google.com/file/d/1G6at...
Regards, Julio