[Equest-users] Modeling in ASHRAE 90.1 2016 (Matthew S. Garlick)
Konstantina Kalliakoudi
kalliakoudi.k at gmail.com
Thu Oct 17 00:20:24 PDT 2019
Hello Matthew,
are your building your baseline according ASHRAE 90.1- 2016 for LEED v4.1?
It is true that ASHRAE 90.1- 2016 is a bit different from 2010.
In 2016 there are different table for proposed building and for baseline..
The baseline according 2016 in most cases consumes more energy than a
baseline according 2009.
But if you use it for the credit "Optimize Energy performance of LEED v4.1"
then the equation for becoming the points is [( PCIt- PCI)/ PCIt ]*100,
and there commes in the equation PCIt the BPF factor according Table
4.2.2.1 ASHRAE, and this makes it difficult to achieve the points.....
I hope my considerations helped.....
Best regards to all
Konstantina Kalliakoudi
Mechanical Engineer,M.Sc., LEED AP
KHM
Filolaou 28, Ilioupoli, Athens, Greece
Tel. 0030 210 99 69 680
www.khmoe.gr
--------- Forwarded message ----------
From: "Matthew S. Garlick" <msg at tbcxinc.com>
To: "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org
>
Cc:
Bcc:
Date: Wed, 16 Oct 2019 02:07:23 +0000
Subject: [Equest-users] Modeling in ASHRAE 90.1 2016
Hi all,
This is my first project using ASHRAE 90.1 2016 and I’m finding some odd
instructions in Appendix G.
A couple examples-
- Table G3.1 says that the baseline case is to use table G3.7 to define
space by space LPD, but the proposed has to comply with section 9.1.3.
There’s a big difference between maximum allowed LPD between the two
tables, for example G3.7 calls for open Office areas at 1.1 W/sf but table
9.6.1 says 0.81 W/sf.
- Baseline Wall insulation for climate zone 5b, per table G3.1 and
G3.4-5 is to be simulated at a U value of 0.084. The proposed case must be
under 0.055 per table 5.5-5.
Appendix G now has tables for envelope properties, equipment efficiencies
and lighting power densities which all conflict with what we’re used to
finding in sections 5, 6 and 9 in previous iterations of the standard.
Reading table G3.1 it seems clear that they want us to use the appendix G
tables to define the baseline and not the tables in the main sections, but
this makes no sense to me.
I feel like I’m taking crazy pills…can anyone shine some light on this?
[image: TBCx]
*Matt Garlick, CxA, CEM, BEMP*
Building Efficiency Engineer | TBCx
E-mail: msg at tbcxinc.com
Mobile: 801-907-5654
Direct: 801-401-8456
324 S. State Street, Suite 400
Salt Lake City, UT 84111
www.tbcxinc.com <http://tbcxinc.com/>
---------- Forwarded message ----------
From: Javed Iqbal <eee.javed at gmail.com>
To: "Matthew S. Garlick" <msg at tbcxinc.com>
Cc: "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org
>
Bcc:
Date: Wed, 16 Oct 2019 11:18:22 +0530
Subject: Re: [Equest-users] Modeling in ASHRAE 90.1 2016
Hello Matt,
- ASHRAE 90.1-2016, section G1.2.1 explicitly says that ' *The interior
lighting power shall not exceed the interior lighting power
allowance determined using either Tables G3.7 or G3.8 and the
methodology **described
in Sections 9.5.1 and 9.6.1'*. So it seems you need to refer G3.7 or G3.8
for LPD values and* Methodology* should be as per 9.5.1 and 9.6.1
- Table G3.1 5(a) says '*All components of the building envelope in the
proposed design shall be modeled as shown on architectural drawings or as
built for existing building envelopes*' with some exceptions but none
restricts proposed values.
I haven't used 90.1-2016 to a great extent but standard seems quite
straight forward with some changes in formatting (tables, references etc.)
compared to previous versions. I stand corrected if missed out anything
important.
hope this is helpful.
regards,
On Wed, Oct 16, 2019 at 7:54 AM Matthew S. Garlick via Equest-users <
equest-users at lists.onebuilding.org> wrote:
> Hi all,
>
>
>
> This is my first project using ASHRAE 90.1 2016 and I’m finding some odd
> instructions in Appendix G.
>
>
>
> A couple examples-
>
> - Table G3.1 says that the baseline case is to use table G3.7 to
> define space by space LPD, but the proposed has to comply with section
> 9.1.3. There’s a big difference between maximum allowed LPD between the two
> tables, for example G3.7 calls for open Office areas at 1.1 W/sf but table
> 9.6.1 says 0.81 W/sf.
> - Baseline Wall insulation for climate zone 5b, per table G3.1 and
> G3.4-5 is to be simulated at a U value of 0.084. The proposed case must be
> under 0.055 per table 5.5-5.
>
>
>
> Appendix G now has tables for envelope properties, equipment efficiencies
> and lighting power densities which all conflict with what we’re used to
> finding in sections 5, 6 and 9 in previous iterations of the standard.
> Reading table G3.1 it seems clear that they want us to use the appendix G
> tables to define the baseline and not the tables in the main sections, but
> this makes no sense to me.
>
>
>
> I feel like I’m taking crazy pills…can anyone shine some light on this?
>
>
>
>
>
> [image: TBCx]
>
> *Matt Garlick, CxA, CEM, BEMP*
> Building Efficiency Engineer | TBCx
>
> E-mail: msg at tbcxinc.com
> Mobile: 801-907-5654
> Direct: 801-401-8456
>
> 324 S. State Street, Suite 400
> Salt Lake City, UT 84111
> www.tbcxinc.com <http://tbcxinc.com/>
>
>
> _______________________________________________
> Equest-users mailing list
> http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
> To unsubscribe from this mailing list send a blank message to
> EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG
>
--
Javed Iqbal, LEED AP, CEA
Sr. Energy Analyst
---------- Forwarded message ----------
From: Calvin Chu <cchu at brightpower.com>
To: Javed Iqbal <eee.javed at gmail.com>
Cc: "Matthew S. Garlick" <msg at tbcxinc.com>, "
equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Bcc:
Date: Wed, 16 Oct 2019 08:22:24 -0400
Subject: Re: [Equest-users] Modeling in ASHRAE 90.1 2016
Hi Matt,
The baseline building components referenced in Appendix G of ASHRAE
90.1-2016 are equivalent to ASHRAE 90.1-2004 levels, which is why the
baseline wall assemblies and other components in the same appendix are much
worse than the ones in the numbered sections (these are the prescriptive
components for 2016). The reason for this is to avoid having to create
different versions of the baseline model each time a triennial of 90.1 is
released (which was the case up until now). The proposed design will always
be compared to the 2004 modeling baseline and the results will be adjusted
relative to the respective version of ASHRAE 90.1 using Building
Performance Factors (BPFs), Performance Cost Index (PCI), and other new
metrics. See 90.1-2016 4.2.1.1 for more info.
Kind regards,
Calvin
On Wed, Oct 16, 2019 at 1:49 AM Javed Iqbal via Equest-users <
equest-users at lists.onebuilding.org> wrote:
> Hello Matt,
>
> - ASHRAE 90.1-2016, section G1.2.1 explicitly says that ' *The interior
> lighting power shall not exceed the interior lighting power
> allowance determined using either Tables G3.7 or G3.8 and the methodology **described
> in Sections 9.5.1 and 9.6.1'*. So it seems you need to refer G3.7 or G3.8
> for LPD values and* Methodology* should be as per 9.5.1 and 9.6.1
> - Table G3.1 5(a) says '*All components of the building envelope in the
> proposed design shall be modeled as shown on architectural drawings or as
> built for existing building envelopes*' with some exceptions but none
> restricts proposed values.
>
>
> I haven't used 90.1-2016 to a great extent but standard seems quite
> straight forward with some changes in formatting (tables, references etc.)
> compared to previous versions. I stand corrected if missed out anything
> important.
>
> hope this is helpful.
>
> regards,
>
> On Wed, Oct 16, 2019 at 7:54 AM Matthew S. Garlick via Equest-users <
> equest-users at lists.onebuilding.org> wrote:
>
>> Hi all,
>>
>>
>>
>> This is my first project using ASHRAE 90.1 2016 and I’m finding some odd
>> instructions in Appendix G.
>>
>>
>>
>> A couple examples-
>>
>> - Table G3.1 says that the baseline case is to use table G3.7 to
>> define space by space LPD, but the proposed has to comply with section
>> 9.1.3. There’s a big difference between maximum allowed LPD between the two
>> tables, for example G3.7 calls for open Office areas at 1.1 W/sf but table
>> 9.6.1 says 0.81 W/sf.
>> - Baseline Wall insulation for climate zone 5b, per table G3.1 and
>> G3.4-5 is to be simulated at a U value of 0.084. The proposed case must be
>> under 0.055 per table 5.5-5.
>>
>>
>>
>> Appendix G now has tables for envelope properties, equipment efficiencies
>> and lighting power densities which all conflict with what we’re used to
>> finding in sections 5, 6 and 9 in previous iterations of the standard.
>> Reading table G3.1 it seems clear that they want us to use the appendix G
>> tables to define the baseline and not the tables in the main sections, but
>> this makes no sense to me.
>>
>>
>>
>> I feel like I’m taking crazy pills…can anyone shine some light on this?
>>
>>
>>
>>
>>
>> [image: TBCx]
>>
>> *Matt Garlick, CxA, CEM, BEMP*
>> Building Efficiency Engineer | TBCx
>>
>> E-mail: msg at tbcxinc.com
>> Mobile: 801-907-5654
>> Direct: 801-401-8456
>>
>> 324 S. State Street, Suite 400
>> Salt Lake City, UT 84111
>> www.tbcxinc.com <http://tbcxinc.com/>
>>
>>
>> _______________________________________________
>> Equest-users mailing list
>> http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
>> To unsubscribe from this mailing list send a blank message to
>> EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG
>>
>
>
> --
>
>
> Javed Iqbal, LEED AP, CEA
> Sr. Energy Analyst
>
>
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