[Bldg-sim] Bldg-sim Digest, Vol 4, Issue 28
Tianzhen Hong
thong at lbl.gov
Mon Mar 31 08:31:40 PDT 2008
Chris,
A DOE-2.1E function was developed to model VRF systems. The VRF function
works for code compliance type calculations - always meeting the zone
cooling and heating loads. The VRF function works for heat pump and heat
recovery type VRF systems. Daikin and Mitsubishi are filing a joint
application to California Energy Commission to get credits for their VRF
systems. So far EnergyPro from EnergySoft is the only GUI that
incorporates the VRF function.
The EnergyPlus development team has a plan to implement the VRF function
in the next one or two releases.
Tianzhen
On 3/28/2008 2:31 PM, bldg-sim-request at lists.onebuilding.org wrote:
> Send Bldg-sim mailing list submissions to
> bldg-sim at lists.onebuilding.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
> or, via email, send a message with subject or body 'help' to
> bldg-sim-request at lists.onebuilding.org
>
> You can reach the person managing the list at
> bldg-sim-owner at lists.onebuilding.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Bldg-sim digest..."
>
>
> Today's Topics:
>
> 1. Re: eQuest: Slab on Grade Ueff Calculation (UndergroundWall)
> (Michael Tillou)
> 2. Mitsubishi VFR systems (Chris Jones)
> 3. Shades in eQuest or DOE-2? (Andrew Pierson)
> 4. Re: eQuest: Slab on Grade Ueff Calculation(UndergroundWall)
> (Anis Ben Ayed)
> 5. (no subject) (Andrew Pierson)
> 6. Job Opportunity - BuroHappold, New York (Rashmi Sonal)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 28 Mar 2008 09:54:20 -0400
> From: "Michael Tillou" <michael.tillou at gmail.com>
> Subject: Re: [Bldg-sim] eQuest: Slab on Grade Ueff Calculation
> (UndergroundWall)
> To: "'Kruis, Neal'" <Neal_Kruis at nrel.gov>, "'Brett Fero'"
> <bfero at robsonwoese.com>, <bldg-sim at lists.onebuilding.org>
> Message-ID: <001b01c890db$534a6080$2e01a8c0 at Miket>
> Content-Type: text/plain; charset="us-ascii"
>
> Neal and Brett,
>
> >From my own experience trying to figure out what eQuest is doing I can
> report that the eQuest wizard correctly creates the fictitious resistance
> layer using the method described in the referenced article by Fred
> Winkelmann. The wizard has a fairly extensive list of insulation choices to
> choose from so I recommend creating your underground wall constructions from
> within the wizard thus saving you the headache of manually calculating the
> properties of the required resistance layer for each underground
> wall/construction type.
>
> I often create a simple wizard project for the express purpose of building a
> wall construction using the wizard defaults that I then copy and paste from
> one input file into another.
>
> yours truly,
>
> mike
>
> Michael Tillou, PE, LEED
> Tillou Engineering, LLC
> Williamstown, MA 01267
> P: 413-458-9870 C: 413-652-1087
>
> _____
>
> From: bldg-sim-bounces at lists.onebuilding.org
> [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Kruis, Neal
> Sent: Thursday, March 27, 2008 11:55 AM
> To: Brett Fero; bldg-sim at lists.onebuilding.org
> Subject: Re: [Bldg-sim] eQuest: Slab on Grade Ueff Calculation
> (UndergroundWall)
>
>
>
> Brett,
>
>
>
> My understanding is that the PERIM-CONDUCT and PERIM-EXPOSED keywords are
> not yet implemented in the DOE-2.2 engine (used by eQuest). The U-EFFECTIVE
> keyword, taken from the DOE-2.1E engine, is no longer used in DOE-2.2 (but
> for some reason the program doesn't complain when you try to use it -
> instead it just ignores any input for this keyword). This doesn't seem to
> leave much for us to work with. *Does anybody know if eQuest does something
> other than specifying the U-EFFECTIVE keyword when it asks for a U-eff input
> for underground surfaces?
>
>
>
> The concept for all of these keywords comes from a paper released by Fred
> Winkelmann in Building Simulation User News Vol. 23, No. 6
> (http://gundog.lbl.gov/dirun/23n_d_1.pdf). The article suggests creating a
> fictitious resistance layer in the wall to create the correct overall
> U-value for the foundation configuration. Using the U-EFFECTIVE keyword in
> addition to specifying this fictitious layer seems redundant, and you should
> be able to get the same results without specifying it.
>
>
>
> My suggestion would be to specify the fictitious layer in detailed edit
> mode. That is of course if eQuest isn't already doing something behind the
> scenes to calculate this layer.
>
>
>
>
>
> Neal Kruis
>
> Center for Buildings and Thermal Systems
>
> National Renewable Energy Laboratory
>
> 1617 Cole Blvd.
>
> Golden, CO 80401
>
> (303) 384-7591
>
> _____
>
> From: bldg-sim-bounces at lists.onebuilding.org
> [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Brett Fero
> Sent: Tuesday, March 25, 2008 9:24 AM
> To: bldg-sim at lists.onebuilding.org
> Subject: [Bldg-sim] eQuest: Slab on Grade Ueff Calculation (Underground
> Wall)
>
>
>
> I am modeling a slab-on-grade floor using the methods described under the
> help for the U-EFF. This is the described in the Volume 3: Topics/ Envelope
> Components / Underground Wall eQuest 3.61e help files. A sample calculation
> is presented for the 100 ft x 50 ft slab-on-grade floor. The sample input
> is given as follows;
>
> LAY-SLAB-1 = LAYERS
> MATERIAL = ("Soil 12in","Conc HW 140lb 4in (CC03)")
> INSIDE-FILM-RES = 0.77 ..
>
> CON-SLAB-1 = CONSTRUCTION
> TYPE = LAYERS
> LAYERS = LAY-SLAB-1 ..
>
> SLAB-1 = UNDERGROUND-FLOOR
> HEIGHT = 50
> WIDTH = 100
> TILT = 180
> PERIM-EXPOSED = 300
> PERIM-CONDCUT = 0.50
> CONSTRUCTION = CON-SLAB-1 ..
>
> eQuest 3.61e does not appear to accept the PERIM-CONDUCT and PERIM-EXPOSED
> keywords as input. Instead it uses the keyword U-EFF.
>
> In Vol 23, No.6 of the Building Energy Simulation User News for DOE2.1E,
> slab-on-grade calculations were presented using the following;
>
> Reff = A/(F2 x Pexp) where Reff = Reffective, A = area of slab (ft), F2 =
> perimeter conduction factor, and Pexp = exposed perimeter length (ft).
>
> So, is U-EFF required in eQuest 3.61e calculated as U-EFF = 1/Reff = (F2 x
> Pexp)/Area using F2 factors from Table 9?
>
> Or, is there a way that I should be entering PERIM-EXPOSED and PERIM-CONDUCT
> for each floor?
>
> Thanks in advance for any help clearing this up for me.
>
>
>
> Brett Fero, P.E., LEED AP
>
> RobsonWoese, Inc.
>
> 5824 Widewaters Parkway
>
> East Syracuse, NY 13057
>
>
>
>
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20080328/e43099ad/attachment-0001.html
>
> ------------------------------
>
> Message: 2
> Date: Fri, 28 Mar 2008 12:08:18 -0400
> From: Chris Jones <cj at cr-jay.ca>
> Subject: [Bldg-sim] Mitsubishi VFR systems
> To: bldg-sim at lists.onebuilding.org
> Message-ID: <20080328160827.2F93948D2B at diego.dreamhost.com>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> I am presented with the task of modelling a small commercial building
> with the Mitsubishi variable flow refrigerant system - heat
> pumps. Does anyone have any hints for approximating this system in
> DOE2.1e or equest?
>
>
>
> Chris Jones, P.Eng.
> 14 Oneida Avenue
> Toronto, ON M5J2E3
> Tel. 416 203-7465
> Fax. 416 946-1005
>
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 28 Mar 2008 11:35:43 -0500
> From: "Andrew Pierson" <pierson at uiuc.edu>
> Subject: [Bldg-sim] Shades in eQuest or DOE-2?
> To: <bldg-sim at lists.onebuilding.org>
> Message-ID: <200803281635.m2SGZn42025881 at expredir5.cites.uiuc.edu>
> Content-Type: text/plain; charset="us-ascii"
>
> Thank you all for your responses. I am having trouble finding the fixed
> shades and building shades in eQuest. I noticed the shades are in the DOE-2
> Help but not the eQuest Help files. Is it possible to have trees as
> building shades or fixed shades in eQuest? Could I be missing a plug-in?
> Also, when I click on the 'Project & Site' tab, the screen says "no
> spreadsheet currently defined". I am obviously missing a step as far as
> implementing these building shades. Any ideas?
>
>
>
> Thanks everybody.
>
>
>
> Andrew
>
>
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20080328/c382b811/attachment-0001.html
>
> ------------------------------
>
> Message: 4
> Date: Fri, 28 Mar 2008 11:06:14 -0500
> From: "Anis Ben Ayed" <a.benayed at eb-engineers.com>
> Subject: Re: [Bldg-sim] eQuest: Slab on Grade Ueff
> Calculation(UndergroundWall)
> To: "'Michael Tillou'" <michael.tillou at gmail.com>, "'Kruis, Neal'"
> <Neal_Kruis at nrel.gov>, "'Brett Fero'" <bfero at robsonwoese.com>,
> <bldg-sim at lists.onebuilding.org>
> Message-ID: <001f01c890ed$a7166210$0a00a8c0 at ebertbaumann.com>
> Content-Type: text/plain; charset="us-ascii"
>
> Dear all,
>
>
>
> I have a question for you about e-Quest. I have a typical floor in a high
> rise that I'm trying to simulate according to ASHRAE 90.1 Appendix G for
> LEED EAc1. The floor area is about 1200 m2 or 12916 ft2 the system applied
> in the design case is Fan Coil units for the different zones + DOAU for the
> fresh air. The system applied in the baseline case is system 7 (VAV with
> reheat).
>
>
>
> My question is how long do you think it will take for someone without very
> much experience with e-Quest but with some simulation experience with other
> tools to run the simulation with e-Quest. Thank you very much and hope to
> hear from you soon.
>
>
>
>
>
>
> Best regards,
>
>
>
>
>
> Anis Ben Ayed, LEEDR AP
>
> Mechanical Engineer
>
>
>
> Ebert & Baumann Consulting Engineers, Inc.
>
> An Enterprise of the Ebert-Consulting Group
>
>
>
> 1004 Pennsylvania Avenue, SE
>
> Washington, D.C. 20003, USA
>
>
>
>
>
> Tel +1.202.608.1334 ext.124
>
> Fax +1.202.544.1434
>
> www.eb-engineers.com <http://www.eb-engineers.com/>
>
> _____
>
> From: bldg-sim-bounces at lists.onebuilding.org
> [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Michael Tillou
> Sent: Friday, March 28, 2008 8:54 AM
> To: 'Kruis, Neal'; 'Brett Fero'; bldg-sim at lists.onebuilding.org
> Subject: Re: [Bldg-sim] eQuest: Slab on Grade Ueff
> Calculation(UndergroundWall)
>
>
>
> Neal and Brett,
>
>
>
> >From my own experience trying to figure out what eQuest is doing I can
> report that the eQuest wizard correctly creates the fictitious resistance
> layer using the method described in the referenced article by Fred
> Winkelmann. The wizard has a fairly extensive list of insulation choices to
> choose from so I recommend creating your underground wall constructions from
> within the wizard thus saving you the headache of manually calculating the
> properties of the required resistance layer for each underground
> wall/construction type.
>
>
>
> I often create a simple wizard project for the express purpose of building a
> wall construction using the wizard defaults that I then copy and paste from
> one input file into another.
>
>
>
> yours truly,
>
>
>
> mike
>
>
>
> Michael Tillou, PE, LEED
>
> Tillou Engineering, LLC
>
> Williamstown, MA 01267
>
> P: 413-458-9870 C: 413-652-1087
>
>
>
> _____
>
> From: bldg-sim-bounces at lists.onebuilding.org
> [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Kruis, Neal
> Sent: Thursday, March 27, 2008 11:55 AM
> To: Brett Fero; bldg-sim at lists.onebuilding.org
> Subject: Re: [Bldg-sim] eQuest: Slab on Grade Ueff Calculation
> (UndergroundWall)
>
> Brett,
>
>
>
> My understanding is that the PERIM-CONDUCT and PERIM-EXPOSED keywords are
> not yet implemented in the DOE-2.2 engine (used by eQuest). The U-EFFECTIVE
> keyword, taken from the DOE-2.1E engine, is no longer used in DOE-2.2 (but
> for some reason the program doesn't complain when you try to use it -
> instead it just ignores any input for this keyword). This doesn't seem to
> leave much for us to work with. *Does anybody know if eQuest does something
> other than specifying the U-EFFECTIVE keyword when it asks for a U-eff input
> for underground surfaces?
>
>
>
> The concept for all of these keywords comes from a paper released by Fred
> Winkelmann in Building Simulation User News Vol. 23, No. 6
> (http://gundog.lbl.gov/dirun/23n_d_1.pdf). The article suggests creating a
> fictitious resistance layer in the wall to create the correct overall
> U-value for the foundation configuration. Using the U-EFFECTIVE keyword in
> addition to specifying this fictitious layer seems redundant, and you should
> be able to get the same results without specifying it.
>
>
>
> My suggestion would be to specify the fictitious layer in detailed edit
> mode. That is of course if eQuest isn't already doing something behind the
> scenes to calculate this layer.
>
>
>
>
>
> Neal Kruis
>
> Center for Buildings and Thermal Systems
>
> National Renewable Energy Laboratory
>
> 1617 Cole Blvd.
>
> Golden, CO 80401
>
> (303) 384-7591
>
> _____
>
> From: bldg-sim-bounces at lists.onebuilding.org
> [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Brett Fero
> Sent: Tuesday, March 25, 2008 9:24 AM
> To: bldg-sim at lists.onebuilding.org
> Subject: [Bldg-sim] eQuest: Slab on Grade Ueff Calculation (Underground
> Wall)
>
>
>
> I am modeling a slab-on-grade floor using the methods described under the
> help for the U-EFF. This is the described in the Volume 3: Topics/ Envelope
> Components / Underground Wall eQuest 3.61e help files. A sample calculation
> is presented for the 100 ft x 50 ft slab-on-grade floor. The sample input
> is given as follows;
>
> LAY-SLAB-1 = LAYERS
> MATERIAL = ("Soil 12in","Conc HW 140lb 4in (CC03)")
> INSIDE-FILM-RES = 0.77 ..
>
> CON-SLAB-1 = CONSTRUCTION
> TYPE = LAYERS
> LAYERS = LAY-SLAB-1 ..
>
> SLAB-1 = UNDERGROUND-FLOOR
> HEIGHT = 50
> WIDTH = 100
> TILT = 180
> PERIM-EXPOSED = 300
> PERIM-CONDCUT = 0.50
> CONSTRUCTION = CON-SLAB-1 ..
>
> eQuest 3.61e does not appear to accept the PERIM-CONDUCT and PERIM-EXPOSED
> keywords as input. Instead it uses the keyword U-EFF.
>
> In Vol 23, No.6 of the Building Energy Simulation User News for DOE2.1E,
> slab-on-grade calculations were presented using the following;
>
> Reff = A/(F2 x Pexp) where Reff = Reffective, A = area of slab (ft), F2 =
> perimeter conduction factor, and Pexp = exposed perimeter length (ft).
>
> So, is U-EFF required in eQuest 3.61e calculated as U-EFF = 1/Reff = (F2 x
> Pexp)/Area using F2 factors from Table 9?
>
> Or, is there a way that I should be entering PERIM-EXPOSED and PERIM-CONDUCT
> for each floor?
>
> Thanks in advance for any help clearing this up for me.
>
>
>
> Brett Fero, P.E., LEED AP
>
> RobsonWoese, Inc.
>
> 5824 Widewaters Parkway
>
> East Syracuse, NY 13057
>
>
>
>
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20080328/4aea9d63/attachment.htm
>
> ------------------------------
>
> Message: 5
> Date: Fri, 28 Mar 2008 11:24:08 -0500
> From: "Andrew Pierson" <pierson at uiuc.edu>
> Subject: [Bldg-sim] (no subject)
> To: <bldg-sim at lists.onebuilding.org>
> Message-ID: <200803281624.m2SGOEl8003344 at expredir6.cites.uiuc.edu>
> Content-Type: text/plain; charset="us-ascii"
>
> Thank you all for your responses. I am having trouble finding the fixed
> shades and building shades in eQuest. I noticed they are in the DOE-2 Help
> but not the eQuest Help files. Is this possible to do in eQuest? Could I
> be missing a plug-in? Also, when I click on the 'Project & Site' tab, the
> screen says "no spreadsheet currently defined". I am obviously missing a
> step as far as implementing these building shades. Any ideas?
>
>
>
> Thanks everybody.
>
>
>
> Andrew
>
>
>
>
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20080328/4dbfe635/attachment-0001.html
>
> ------------------------------
>
> Message: 6
> Date: Fri, 28 Mar 2008 17:01:13 -0000
> From: "Rashmi Sonal" <sonal at burohappold.com>
> Subject: [Bldg-sim] Job Opportunity - BuroHappold, New York
> To: <bldg-sim at lists.onebuilding.org>
> Message-ID:
> <769F37AB357BF741BC9FD2057F261832052C0C4F at ex-be03.burohappold.com>
> Content-Type: text/plain; charset="us-ascii"
>
>
>
> Full time positions with Buro Happold are currently available in New
> York.
>
>
>
> Buro Happold is a leading engineering consulting firm with over 2000
> employees worldwide in 16 offices. We are involved in the design of some
> of the most prestigious projects in the New York area and worldwide. Our
> North America offices are located in New York City and Los Angles. Buro
> Happold is currently expanding its Computational Simulation & Analysis
> (CoSA) team. This team's role focuses on providing design advice
> relating to building performance, environmental quality, and energy
> issues. Currently there are positions available for qualified
> individuals with experience in the following areas.
>
>
>
> Mechanical system design and analysis
>
>
>
> Computational Fluid Dynamics
>
>
>
> Building Sciences and Post Occupancy Monitoring
>
>
>
> Job Description:
>
>
>
> Buro Happold CoSA Solutions is seeking qualified individuals with 4-5
> years experience in design and analysis of mechanical systems including
> heating, cooling, heat rejection, air distribution, ventilation,
> building automation and controls. Applicants should have a strong
> understanding of modelling and analysis techniques related to building
> systems and controls. PE licence with an experience in low energy
> building engineering is a plus. The work will include executing building
> simulations, providing strategic design advice, and assisting in design
> documentation and specification on a wide variety of low energy
> buildings.
>
>
>
> Responsibilities will include:
>
>
>
> 1. Design advice on selection of equipment and controls for use in
> building systems.
>
>
>
> 2. Computer modeling of the mechanical systems to understand the
> energy and thermal comfort performance under various conditions and
> design configurations.
>
>
>
> 3. Sustainable design consulting through the incorporation of
> energy efficient and renewable technologies.
>
>
>
> 4. Report formation and presenting of analysis results in a clear
> and precise way to multidisciplinary design teams.
>
>
>
> Interested Individuals should send resumes to Matthew Herman at Buro
> Happold Consulting Engineers. E mail: matthew.herman at burohappold.com
>
>
>
>
>
> Buro Happold, Inc.
>
> 100Broadway, 23 rd Floor
>
> New York, NY 10005 USA
>
> Telephone 212.334.2025
>
> Fax 212.334.5528
>
> www.burohappold.com <http://www.burohappold.com/>
>
> This transmission is confidential and intended solely for the person or
> organization to whom it is correctly addressed. If you are not the
> intended recipient of this transmission, you should not take any action
> in reliance on it. Further, this transmission may contain confidential
> design and other information owned by Buro Happold Consulting Engineers
> PC. You should not copy, distribute, use, offer for sale or hire such
> information or in any way infringe the design and intellectual property
> rights of Buro Happold Consulting Engineers PC. It is intended that
> communication by email from Buro Happold Consulting Engineers PC or its
> employees is limited to communications connected to the services
> provided by Buro Happold Consulting Engineers PC. Buro Happold
> Consulting Engineers PC accepts no liability for any communications not
> connected to the services it provides. Computer viruses may be
> transmitted or downloaded onto your computer system via email
> communication. It is the recipient's responsibility to take any action
> necessary to prevent computer viruses being transmitted in this way.
> Accordingly, Consulting Engineers PC disclaims all responsibility which
> arises directly or indirectly from such transmission of computer
> viruses.
>
>
>
>
>
>
>
> This message has been scanned by MailController - www.MailController.altohiway.com
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20080328/2fe0b8a7/attachment.htm
> -------------- next part --------------
> A non-text attachment was scrubbed...
> Name: not available
> Type: image/gif
> Size: 1767 bytes
> Desc: image001.gif
> Url : http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20080328/2fe0b8a7/attachment-0001.gif
>
> ------------------------------
>
> _______________________________________________
> Bldg-sim mailing list
> Bldg-sim at lists.onebuilding.org
> http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org
>
>
> End of Bldg-sim Digest, Vol 4, Issue 28
> ***************************************
>
More information about the Bldg-sim
mailing list