GSHP with Radiant, no flow in radiant loop
I'm modeling a GSHP loop, with secondary loops for radiant heating and cooling. I'm using the water-to-water heat pump component to transfer heat from the GSHP loop to the secondary loops. Right now there is no flow in the radiant loops and I can't figure out why.
GSHP loop is set up like this, with the water-to-water heat pump on the demand side.
Radiant hot water loop is set up like this
I am really stuck on this. If anyone has any insights please let me know. Thank you!
The heat exchanger component can sometimes not be autosized correctly. It assumes a really high Delta T between the loops and it ends up being a really small flow. If you could upload your .osm file it would be easier to tell what's going on.
I modelled a similar scenario and I had the same issue.
I tried hard sizing the heat pump but that didn't have any effect. You can take a look at the file here if you have any other ideas. link text Thank you so much!