Control of PlantEquipmentOperation:Uncontrolled

asked 2019-10-08 03:57:58 -0500

Tanay gravatar image

updated 2019-10-08 04:13:25 -0500

Hello All,

Is there any way to control the HW loop when using the PlantEquipmentOperation:Uncontrolled? From the documentation of EnergyPlus it says,

"If the loop runs, this equipment will run also, unless turned off by the loop flow resolver to maintain continuity in the fluid loop."

So, is there any way to run the loop, to have the equipment running?

PlantEquipmentOperationSchemes,
   HW Loop Operation,                                                                                  
   PlantEquipmentOperation:Uncontrolled,                                                      
   HW Loop Scheme 1,                                                                                  
   On 24/7;                                                                                            

PlantEquipmentOperation:Uncontrolled,
   HW Loop Scheme 1,                                                                            
   HW Loop Scheme 1 Equipment List;                                                     

PlantEquipmentList,
   HW Loop Scheme 1 Equipment List,                                                     
   Boiler:HotWater,                                                                                 
   Boiler;

I have a Heated Floor system with natural Ventilation (from Designbuilder), as shown in

HVAC System.png

Edit: This is the IDF file I have. Link

edit retag flag offensive close merge delete

Comments

I'm not sure I see what the question is...? Is it not running?

Julien Marrec gravatar imageJulien Marrec ( 2019-10-08 04:06:57 -0500 )edit

Yes. Right now the Boiler is not running. I can only see the fuel consumption from the supply pump, no Gas consumption. Also, the rooms are not heated at all.

Tanay gravatar imageTanay ( 2019-10-08 04:09:23 -0500 )edit

Do you have correctly put some demand on the loop? With what you shared it's hard to say where it went wrong.

Julien Marrec gravatar imageJulien Marrec ( 2019-10-08 08:12:50 -0500 )edit

Ahh. Yes, this is what I want to know. How can I define loop demand in this case? Can I define the loop demand somewhere else apart from the PlantEquipmentOperation? I know I can define by doing PlantEquipmentOperation:HeatingLoad and it works. But is there any other method?

Tanay gravatar imageTanay ( 2019-10-08 08:16:51 -0500 )edit

I don't really get PlantEquipmentOperation:HeatingLoad isn't a good choice here, but whatever. I suppose if you really want to use the Uncontrolled operation, you have to control your loop itself via AvailabilityManagers. Try to use an AvailabilityManager:Scheduled for eg.

Julien Marrec gravatar imageJulien Marrec ( 2019-10-08 08:22:01 -0500 )edit