[Bldg-sim] VRV systems

[Haider Khan]

A quasi DOE2 approach would be to calculate the hourly system loads using
DOE2 and calculate VRV energy consumption using spreadsheet calculations.
You will have to create a regression based model to calculate the energy
consumption as a function of the capacity and outdoor air temperature (The
data is available on Mr. Slim website). Once you are sure the model is
working correctly (be sure to put limits on your equations for out of range
data) you can use the hourly weather boundary conditions to calculate the
annual energy consumption.

If  you are doing code compliance using eQUEST you can calculate the average
calibrated EER using the above methodology and use it as a DOE2 input.

Best Regards,
Haider M. Khan, MSME

ICF International
9300 Lee Highway,
Fairfax, VA 22031
Ph:  703 934-3868
Fax: 703 934-3530

On Tue, Apr 1, 2008 at 6:59 AM, Howe, Timothy <Timothy.Howe at stantec.com>
wrote:

>  As I am sure you are aware, this system type is not yet supported by
> DOE/eQuest.  I personally have been trying to develop an exceptional calc
> method, using the bin output of eQuest.
>
> Anyone else successfully produced a side calc for this system?
>
> Tim.
>
>
> -----Original Message-----
> From: bldg-sim-bounces at lists.onebuilding.org on behalf of Chatfield, Gary
> Sent: Mon 3/31/2008 5:56 PM
> To: bldg-sim at lists.onebuilding.org
> Subject: [Bldg-sim] VRV systems
>
> Does anyone have an idea of the percentage improvement of a VRV system
> over ASHRAE 90.1 Appendix G system 7?
>
>
>
> I have currently modeled one and I am not sure whether the results I am
> getting are accurate or I have done something wrong.
>
>
>
> Any information would be much appreciated.
>
>
>
> Gary Chatfield
>
> LEED(r) AP
>
>   FLACK + KURTZ
>
> 385 Pilot Road
>
> Suite D
>
> Las Vegas, NV  89119
>
> http://www.flackandkurtz.com <http://www.flackandkurtz.com/>
>
> 702.897.8181 Main
>
> 702.352.9562 Direct
>
> 702.914.6966 Fax
> gary.chatfield at lv.fk.com
>
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