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VRF (air cooled) simple HVAC system in designbuilder

asked 2020-09-21 17:53:53 -0600

oussama-ka's avatar

for my project in DesignBuilder i used the VRF system in the simple HVAC but when i stimulate the project i get some confusings results so as you can see in the image the VRF consume electricity but i get 0 KWH the cooling and heating should be in the electricity column not the distrect cooling/heating column C:\fakepath\Capture.PNG

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answered 2020-09-22 03:16:56 -0600

Luís Filipe S.'s avatar

Designbuilder "Simple HVAC" option uses the EneryPlus Ideal Loads object where the loads are considered to be met directly without use of HVAC equipment through a district heating/cooling system. EnergyPlus displays the unprocessed loads under 'District heating' and 'District cooling' at Summary tab ( Simulation screen).

To model the VRF equipment in detail you will need to use the "Detailed HVAC" model option. As a starting point I suggest to use one of the VRF HVAC templates. For more information see DesignBuilder Program Help.

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i appreciate your answer i did what you've told me but when i get to the stimulation part this is what i get : Program Version,EnergyPlus, Version 8.9.0-40101eaafd, YMD=2020.09.22 10:20, * Severe * Regular expression "Etage1:Client1 Unité intérieure DRV" for variable name "Zone VRF Air Terminal Total Cooling Rate" in input file is incorrect * ~~~ * invalid UTF-8 * Fatal * Error found in regular expression. Previous error(s) cause program termination. ...Summary of Errors that led to program termination: ..... Reference severe error count=1 .....

oussama-ka's avatar oussama-ka  ( 2020-09-22 05:26:03 -0600 )edit

Could you confirm that you are using the latest DBv6.1.6 release? This looks like one issue identified in v6.0 that has already been fixed.

Luís Filipe S.'s avatar Luís Filipe S.  ( 2020-09-22 09:02:54 -0600 )edit

i'm using designbuilder v6.1.0.006

oussama-ka's avatar oussama-ka  ( 2020-09-22 09:05:57 -0600 )edit

I can confirm that this fix has been made after v6.1.2.009.

Luís Filipe S.'s avatar Luís Filipe S.  ( 2020-09-22 10:19:44 -0600 )edit

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Asked: 2020-09-21 17:53:53 -0600

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Last updated: Sep 22 '20