[Bldg-sim] Energy consumption difference in E+ and Equest

[Chris Yates]

Vaibhav

Sorry to nit pick... don't you mean kWh/sq.m/year?

It's difficult to say what you're discrepancy comes from without having 
the models.
All I can recommend is reviewing both model's results at successively 
deeper levels detail. You've already covered the first level of detail - 
the cooling consumption doesn't match.
Your next courses of action may be:

   1. Review monthly consumption
   2. I haven't used equest but assume you can review *hourly *air temps
      and loads, so compare these next.
   3. Solar gain

Are your figures based on zone demand or plant? You've got quite a few 
layers to compare.

Cheers

Chris

On 16/02/2011 06:49, Vaibhav Jain wrote:
> Hello,
>
> We are trying to compare cooling energy consumption of a typical 
> office building model in EnergyPlus and eQUEST. Simulation model is a 
> simple 5 zone model with PTAC system. Climate is New Delhi. Heating 
> consumption is near zero in both the models. We tried our best to 
> closely match models in these two software. The result says, 
> cooling electricity consumption/sq.m./year is about- 35 KW/sq.m./year 
> (in Energyplus) and 100 KW/sq.m./year (in Equest). Some of the 
> guidelines says that cooling consumption should be around 
> 100-120KW/sq.m./year. Is this correct? Does any one has come across 
> this phenomenon.
>
> Why EnergyPlus is giving very less consumption as compared to Equest 
> or references?
>
> Thanks & regards,
> Vaibhav Jain
>
>
> _______________________________________________
> Bldg-sim mailing list
> http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to BLDG-SIM-UNSUBSCRIBE at ONEBUILDING.ORG

-- 

Chris Yates C Eng MCIBSE

/Building Physics Consultant/

Tel:+447960731576

Email: chris.malcolm.yates at gmail.com

Skype: christopher.m.yates

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20110216/b75b0cdc/attachment-0001.htm>