[Bldg-sim] Query for DesignBuilder

[Jim Dirkes]

Javed's suggestion is a good one - remove a layer.

Apart from some possible DB - E+ translation problem, I do not think the
lighting or equipment loads are affected at all by envelope construction.

On Thu, Sep 6, 2018 at 2:24 AM, Javed Iqbal via Bldg-sim <
bldg-sim at lists.onebuilding.org> wrote:

> Let's nail down this problem to E+ because DesignBuilder gives you just an
> interface to translate everything to E+ language. Would you mind sharing
> your IDFs?
>
> On Thu, Sep 6, 2018 at 10:31 AM Kiran Ghosh via Bldg-sim <
> bldg-sim at lists.onebuilding.org> wrote:
>
>> Hi,
>>
>> I have checked the inputs and schedule for each IDF file. It is literally
>> the same model with just the U-value for external walls edited. Could the
>> heat gain through the walls effect the electricity consumption for lighting
>> and equipment in any way (since that is the only thing changing because of
>> a different u value)?
>>
>> Kiran K Ghosh
>> Research Associate
>> TERI
>>
>>
>> ---------- Forwarded message ----------
>> From: Jim Dirkes <jim at buildingperformanceteam.com>
>> To: Kiran Ghosh <kirankghosh31 at gmail.com>
>> Cc: BLDG-SIM <bldg-sim at lists.onebuilding.org>
>> Bcc:
>> Date: Wed, 5 Sep 2018 16:06:19 -0400
>> Subject: Re: [Bldg-sim] Reg: Query For DesignBuilder
>>
>>> All lighting and equipment values are within 1% of each other. That's
>>> probably close enough to be considered "the same", considering the complex
>>> E+ calculations and some rounding errors, but it is less close than seems
>>> reasonable. Have you compared inputs and schedules for each of those in
>>> each IDF?
>>>
>>> On Wed, Sep 5, 2018 at 8:56 AM, Kiran Ghosh via Bldg-sim <
>>> bldg-sim at lists.onebuilding.org> wrote:
>>>
>>>> Hi,
>>>>
>>>> I am currently modelling a simple HVAC model on DesignBuilder. I need
>>>> to run the simulation to obtain annual electricity consumption due to
>>>> Cooling, Lighting and Interior Equipment for different construction
>>>> materials. For some reason, while all the input is the same apart from the
>>>> U value for the external wall, the electricity end-use for lighting and
>>>> interior equipment changes as follows:
>>>>
>>>> U value Lighting Equipment
>>>> 2.04 496.38 885.89
>>>> 2 494.72 880.84
>>>> 1.85 487.9 860.3
>>>>
>>>> The LPD and Equipment Power Density remains the same with the same
>>>> schedule, why is the annual electricity consumption changing?
>>>> --
>>>> Thanks and Regards
>>>> Kiran K Ghosh
>>>> +919582904515
>>>> +918152036434
>>>> kirankghosh31 at gmail.com
>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>
>>>
>>> --
>>>
>>> James V Dirkes II, CEO / President
>>> The Building Performance Team Inc.
>>> 1631 Acacia Dr, Grand Rapids, MI 49504
>>>
>>> (alphabet soup of efforts for greater understanding: PE, BEMP, BCxP,
>>> LEED AP)
>>>
>>> Direct / Mobile: 616.450.8653
>>> jim at buildingperformanceteam.com
>>>
>>> Website <http://buildingperformanceteam.com>l  LinkedIn
>>> <https://www.linkedin.com/pub/jim-dirkes/7/444/413>
>>>
>>> *Coffee conversation:*
>>>
>>> Former gang member counseling a friend about how to improve his public speaking: "You have to pepper your talk with self-defecating humor. "
>>>
>>> Friend: "No shit."
>>>
>>> _______________________________________________
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>>>
>>
>>
>> --
>> Thanks and Regards
>> Kiran K Ghosh
>> +919582904515
>> +918152036434
>> kirankghosh31 at gmail.com
>> _______________________________________________
>> 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
>>
>
>
> --
>
> Javed Iqbal, LEED AP, CEA
> Sr. Energy Analyst
>
>
>
> _______________________________________________
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>
>


-- 

James V Dirkes II, CEO / President
The Building Performance Team Inc.
1631 Acacia Dr, Grand Rapids, MI 49504

(alphabet soup of efforts for greater understanding: PE, BEMP, BCxP, LEED
AP)

Direct / Mobile: 616.450.8653
jim at buildingperformanceteam.com

Website <http://buildingperformanceteam.com>l  LinkedIn
<https://www.linkedin.com/pub/jim-dirkes/7/444/413>

*Coffee conversation:*

Former gang member counseling a friend about how to improve his public
speaking: "You have to pepper your talk with self-defecating humor. "

Friend: "No shit."
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