[Bldg-sim] [EnergyPlus #3916]: Cooling energy consumption by different systems for different thermostats
Shivraj Dhaka
shivrajdhaka at gmail.com
Tue Mar 8 09:53:15 PST 2011
Thanks Dear Bereket,
First, actively we are associated with EnergyPlus only but due to unexpected
% energy saving (cooling only and heating is off throughout year) for
consecutive set point (22 to 23C), I prepared a model in eQUEST with same
input parameters including envelope, HVAC, schedule etc and I observed that
both tools shows large difference in % energy savings (8 to 10%). Is it
possible to shows this much amount of energy saving?
Second, this is clear to me that both tools uses different engine so results
could not be matched exactly. I hope there should be some nominal
differences in outputs.
Meanwhile I would like to ask one more question-
IS it possible to have difference in cooling energy consumption for *a
building *using E+ and eQUEST when building parameters were given exactly
same in both tools and
if difference is possible then which software shall be reliable to client
assurance?.
*Regards.*
Shivraj Dhaka
On Tue, Mar 8, 2011 at 7:52 PM, EnergyPlus Support <
energyplus-support at gard.com> wrote:
> Shiv,
>
> The output report variable "Packaged Terminal Air Conditioner Electric
> Consumption" includes the heating coil energy consumption as well. So it is
> not cooling energy consumption only as you reported it. Please search and
> read for this output variable in the InputOutput reference document of
> EnergyPlus (V6).
>
> Are you comparing the same outputs from both softwares?
>
> This helpdesk doesn't explains the differences between EQuest and
> EnergyPlus. We can assist you if you have a problem with EnergyPlus only.
> In general EnergyPlus and EQuest are not always expected to give similar
> results. Equest uses a different engine and there are several differences
> in assumptions behind these two engines. Therefore diferences are expected.
>
> Hope this helps you,
> Bereket
> -------------------
> Standard EnergyPlus Support is provided free of charge by the U.S.
> Department of Energy, as part of the continuing effort to improve this
> building simulation tool. Expedited, priority support may be available from
> other sources. For a list of EnergyPlus Consultants, see
> http://simulationresearch.lbl.gov/EP/ep_consult.html
>
> Ticket Details
> ===================
> Ticket ID: 3916
> Department: General
> Priority: Medium
> Status: Open
>
>
--
-------------------
warm regards
Shivraj Dhaka
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20110308/2d8304c0/attachment.htm>
More information about the Bldg-sim
mailing list