Currently completing an SBEM with retail units that have a toilet, kitchen and eating area. Kitchen and Toilet area has no heating or cooling in it and the restaurant eating area has heat pumps so there should be a notional heating value within the compliance report?
Getting the Part L to Pass, however looking at the report there is no notional heating value but there is an actual heating value present. Cooling values also seem fine.
Tried it without Heat recovery and any ventilation and that seems to bring the heating value to a reasonable level, thought it could be the angle from north as to why there is no notional heat value. Is there an issue with my model?
Thanks
Josh
Tried it without Heat recovery and Natural ventilation and that seems to bring the heating value to a reasonable level**
Hi Josh,
When you say there is no Notional value, what do you mean exactly - is it being shown as zero, or just blank? Also, are you referring to the 'Energy Consumption by End Use' section of the Compliance report?
Shane Regan | Principle Building Performance Support EngineerHevacomp to OpenBuildings - A complete guide for every user | Bentley Communities
Hi Shane,
All the retail units are next to each other and require separate EPC's and all have the same mechanical/electrical input. Yes the value is currently being shown as zero except one retail unit for some reason.
And yes I am referring to the Energy Consumption by End Use kwh/m2 section of the Compliance report.
Running parts of a model can cause the SBEM calc to return unpredictable results, in my experience. I can take a look at your Hevacomp model to see if anything untoward is apparent, however it is difficult for us to comment on SBEM results as BRE control the calculation method. With this in mind I would strongly advise contacting your assessor scheme provider and/or BRE.
Meanwhile, could you please upload your project to this link, and I will take a look.
Just to check, are you running the calc on a zone by zone basis? I ask as quite a lot of them are designated as 'No heating or Cooling' in HVAC data.