[Equest-users] equest and energy plus outputs

[deepika khowal]

As Joe and others mentioned, its really difficult to create all parameters
same in both softwares.
I am still working on it .
For ex, which system should I use in equest as equivalent to unitary system
in E+?
I understand its difficult to match every input and hence, getting same
results is very tricky.
Thanks all for their inputs

On Thu, Apr 28, 2011 at 4:54 AM, Paul Diglio <paul.diglio at sbcglobal.net>wrote:

> I thought E+ is a free program?  I would be interested to hear from anyone
> who has used Google SketchUp and the Open Studio Plug-in to generate a 3D
> view in E+.
>
> I would like to hear more about the discrepancies between eQuest and E+
> from those who use both programs.
>
> Paul Diglio
>
>
> ------------------------------
> *From:* Pasha Korber-Gonzalez <pasha.pkconsulting at gmail.com>
> *To:* deepika khowal <deepika.khowal at gmail.com>
> *Cc:* energyplus_support <EnergyPlus_Support at yahoogroups.com>;
> equest-users at lists.onebuilding.org
> *Sent:* Thu, April 28, 2011 1:27:44 AM
> *Subject:* Re: [Equest-users] equest and energy plus outputs
>
> Hmmm- an energy plus model showed 50% less energy use (EUI) than eQuest?
> Did you use the same weather files?  (i.e. convert the EPW you used in E+ to
> .bin and use the same weather file in eQuest?)
>
> If this is truly the case, this is unsettling as a simulator.   Wouldn't it
> be safer for our clients to error on the conservative side and give the
> eQuest results instead of the E+ results?
>
> Also--if this is the case, then what is the market advantage to spending
> thousands of dollars on E+ software rather than use the FREE-ware eQuest
> program??
>
> I'd appreciate any commentary to help me "see the light" of this topic.
> And if Deepika is willing to share a visual of his energy results output,
> I'm super curious to see what it is showing...
>
> Good question/good info...thanks,
> Pasha
>
> Korber Energy Consultants
>
>
>
> On Wed, Apr 27, 2011 at 7:11 PM, deepika khowal <deepika.khowal at gmail.com>wrote:
>
>> Thanks Joe
>> Even I realized the same thing. the total energy use in Energy plus was
>> almost 50% less than equest.
>> If this is the case, who would you know that you model is working fine?
>>
>>
>> On Wed, Apr 27, 2011 at 6:06 PM, Joe Huang <
>> yjhuang at whiteboxtechnologies.com> wrote:
>>
>>> I was involved in a two year project 2005-2007 to convert the Calif.
>>> Energy Commission's Title-24 certification suite of building tests from
>>> DOE-2.1E to EnergyPlus.  There are some areas where it's difficult to get
>>> comparable inputs due to differences or limitations in the models. The
>>> differences between the two programs varied a lot depending on the building,
>>> weather, and HVAC system. For the CEC certification suite of 160 runs,
>>> cooling results were more consistent, within 10% in most cases, with
>>> EnergyPlus almost always on the high side; for heating, the differences were
>>> much greater, sometimes with EnergyPlus being 40-60% lower than DOE-2.1E.  I
>>> have a 120-page report on this comparison, but haven't bothered to put it on
>>> the Web.
>>>
>>> Joe
>>>
>>> Joe Huang
>>> White Box Technologies, Inc.
>>> 346 Rheem Blvd., Suite 108D
>>> Moraga CA 94556
>>> yjhuang at whiteboxtechnologies.com
>>> www.whiteboxtechnologies.com
>>> (o) (925)388-0265
>>> (c) (510)928-2683
>>> "building energy simulations at your fingertips"
>>>
>>>
>>>
>>> deepika khowal wrote:
>>>
>>>>  HI All
>>>> I am trying to create same model in equest and energy plus to see
>>>> whether i see same results and just to validate my simulation files.
>>>> has anyone done this before?
>>>> I would like to know what is the % difference in both software outputs?
>>>> Thanks
>>>> Deepika
>>>> ------------------------------------------------------------------------
>>>>
>>>>
>>>>
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>>>
>>
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>
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