Question about modelling in Energyplus

asked 2022-11-18 10:46:15 -0600

Qamar's avatar

updated 2022-11-30 08:11:28 -0600

I would like to ask a question, i am modelling a water to water heat pump in energyPlus and my heating plant loop has equal inlet and outlet temperature on the supply side. Additionally, the demand energy rate of this plant loop is zero. I would be greatly thankful for anyone can help or have any idea about what could be the problem.

Many thanks, Best regards,

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@Qamar it's hard to say what's causing this without seeing the model. Can you upload the IDF and EPW files you're using to Dropbox, Google Drive, or something similar and share the URL for others to download them?

Aaron Boranian's avatar Aaron Boranian  ( 2022-11-18 14:02:52 -0600 )edit

Dear Aaron Boranian, Thank you for your attention. Please find the files in the following link

Many thanks in advance for your help, Best regards,

Qamar's avatar Qamar  ( 2022-11-19 02:47:37 -0600 )edit

However, if there is no energy, then the supply and inlet temps will be equal. I'd look at your plant definitions and see why there is no load. For Air loops, I see this when the zone setpoint is high and the cooling is not needed.

Jim Dirkes's avatar Jim Dirkes  ( 2022-11-20 05:05:56 -0600 )edit

Dear All, I am correcting my model,, but fortunately I am getting this warning for all the radiant floors.

ZoneHVAC:LowTemperatureRadiant:VariableFlow [S.F. 7TH ZONE RADIANT FLOOR] * ~~~ * Surface [S.F.SURFACE 7TH HEAT TRANSFER] temperature below dew-point temperature--potential for condensation exists * ~~~ * Flow to the radiant system will be shut-off to avoid condensation Please any help in solving this issue would be greatly welcome. Many thanks,

Qamar's avatar Qamar  ( 2022-11-30 08:10:54 -0600 )edit