Error when Modelling a Low Temperature Radiant Floor

asked 2015-10-23 19:09:25 -0600

519 ●2 ●9

Hello everyone,

I have been encountering a problem lately when I try to model a radiant floor in OpenStudio.

I am currently using the OpenStudio 1.9.0 plugin for SketchUp.

I have a two story building, one thermal zone per floor, with each floor having a radiant floor heating system. I have created an internal source for each floor and added it to the respective construction set for each floor. I also added a 'low temperature radiant variable flow' to the zone equipment for each thermal zone, along with a cooling schedule and heating schedule, and linked the equipment to the thermal zones. Then I created an empty plant loop and added a boiler, setpoint manager schedule (HW Temp), and a variable speed pump.

When I run the simulation I get the following errors: * Severe * IP: IDF line~524 Object=ZONEHVAC:LOWTEMPERATURERADIANT:SURFACEGROUP, name=LOW TEMP RADIANT VAR FLOWFLOORS, Required Field=[Surface 1 Name] was blank. * Severe * IP: IDF line~524 Object=ZONEHVAC:LOWTEMPERATURERADIANT:SURFACEGROUP, name=LOW TEMP RADIANT VAR FLOWFLOORS, Required Field=[Flow Fraction for Surface 1] was blank. * Severe * IP: IDF line~2331 Object=ZONEHVAC:LOWTEMPERATURERADIANT:SURFACEGROUP, name=LOW TEMP RADIANT VAR FLOW 1FLOORS, Required Field=[Surface 1 Name] was blank. * Severe * IP: IDF line~2331 Object=ZONEHVAC:LOWTEMPERATURERADIANT:SURFACEGROUP, name=LOW TEMP RADIANT VAR FLOW 1FLOORS, Required Field=[Flow Fraction for Surface 1] was blank. * Severe * IP: IDF line~5354 Error detected in Object=PLANTEQUIPMENTOPERATIONSCHEMES, name=PLANT LOOP 1 OPERATION SCHEMES * ~~~ * Field [Control Scheme 1 Schedule Name] is required but was blank

I've looked all through OpenStudio and cannot find a way to solve any of these errors. I can solve them in E+, but I'd like to be able to solve them in OpenStudio. Do I need to write a measure to solve these in OpenStudio?

Thank you for any help! Let me know if I need to post the IDF file, I'm new to posting on Unmet Hours and am not sure if that is standard procedure or not.

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Comments

Eric,

Thank you very much for your response. I apologize for my late reply. Your answer works great and my simulation is now running smoothly.

RChidwick ( 2015-11-02 10:40:52 -0600 )edit

Hey, I seem to have a similar problem and thought that I applied the answer correctly but unfortunately my model isn't working yet. I postet my question here link text. Is my OS not creating new surfaces as well for interior surface constructions as I use Floorspace JS for geometry or how can I fix this problem? Thank you very much!