Re: [EnergyPlus_Support] Energy plus model calibration [1 Attachment]

["Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>]

Dear William,

Calibration of an energy model is a task that normally is attempted:

1. AFTER becoming well familiar with the desired HVAC controls
2. AFTER confirming major / key energy model assumptions by measuring them at the building
3. WITH consideration for the proper capabilities of the modeling program
4. and preferably WITH some help from an optimization tool such as GenOpt, Apidae or DesignBuilder

In short, it's not simple and not something normally attempted by someone who is learning EnergyPlus. 

However, it could be a great learning opportunity for you because it will help improve your understanding of the impact of various input variables. In addition, I believe that this skill will become very important in the future as we seek to improve the operation of existing buildings.

I made a short presentation a few years ago on this topic at one of the ASHRAE Energy Modeling Conferences and have attached my slides along with the notes for each slide. I hope that helps you to succeed in this task.

On Mon, Oct 10, 2016 at 3:02 PM, liwenliang1984@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

Hi, there,

I am really at the beginning of using energy plus, right now I have actual weather data and utility data, so I am working on the model calibration. There is always some overestimation of the electricity consumption in the summer and underestimation of gas consumption in the winter. I know there are so many parameters in energy plus, is there anyone could provide some tips for model calibration, such as how can I control gas or electricity consumption in different seasons or different months?

Thank you very much in advance!

william 

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James V Dirkes II, PE, BEMP, LEED AP
CEO/President
The Building Performance Team Inc.
1631 Acacia Dr, GR, Mi 49504

Direct: 616.450.8653
jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx

Website l  LinkedIn | May 2016 ASHRAE Journal article on energy modeling

?an open mind is not an end in itself but rather is like an open mouth, designed to bite down on something solid and nourishing.

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Posted by: Jim Dirkes <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx>

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Attachment not found:
D:\Eudora\Attach\Calibrating Energy Models to Utility Consumption (ASHRAE NRG Oct2012).pdf