[Bldg-sim] Energy needs at an early design stage

[Duggin, Cory]

I agree with Dennis.  Typically the design evolves so much between the need for conceptual modeling and the more discrete system sizing modeling, I end up building a new model.  With that in mind, I still think the eQuest wizards are the easiest and quickest way to run conceptual model options.  Then I move to IES VE for my more detailed modeling.

Cory Duggin, EI
Energy Engineer I
direct: 615-346-1939



From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Dennis Knight
Sent: Thursday, October 24, 2013 10:02 AM
To: EnergySimulator .
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Energy needs at an early design stage

All,
This has been a great thread.  My experience has been that the early stage models for building orientation and envelope optimization are not of much use, other than the insight gained from the exercise, when you move from that phase of the project to system sizing and equipment selection during the design phase, whether your are working with a manual input workflow into a simulation tool or trying to automate the input through Sketchup, Revit, Bentley, ArchiCAD, etc.  Load calculations, equipment sizing, air distribution system device and distribution system design and selection pretty much demand room-by-room analysis.  Its hard to take conceptual models, exterior surface area models, massing and "shoe-box" models and grow them into room-by-room models using the same original input files.  I'm very interested in what you all have to say about this process and does any of these tools make the transition from concept to full blown design any less painfull?
Dennis

On Thu, Oct 24, 2013 at 10:16 AM, <Dru.Crawley at bentley.com<mailto:Dru.Crawley at bentley.com>> wrote:
In addition to being able to do EnergyPlus simulation during conceptual design using AECOsim Energy Simulator , users can also do ASHRAE heating and cooling load calculations and look at ASHRAE Standards 90.1 and 62.1 prescriptive and whole-building energy compliance (90.1 ECB and PRM (App G).

To see the conceptual modeling capabilities, it starts about 6:30 mins into this video:  http://youtu.be/ZFuKIISoVhk


From: Dru Crawley
Sent: Wednesday, October 23, 2013 6:53 AM
To: bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>
Subject: RE: Energy needs at an early design stage

Bentley Systems' AECOsim Energy Simulator has a conceptual mode - about 10 inputs (mostly from drop-down boxes), draw the outline of the footprint, select from a dozen preconfigured HVAC system (drag-and-drop components, all 90.1 required baseline and budget systems), and simulate.  And it uses EnergyPlus.  Once your conceptual model is ready, you can modify all the default parameters.

Free, 30-day trial available from:  http://www.bentley.com/en-US/Products/AECOsim+Energy+Simulator/


From: bldg-sim-bounces at lists.onebuilding.org<mailto:bldg-sim-bounces at lists.onebuilding.org> [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Wagemakers, Jens (2034464)
Sent: Wednesday, October 23, 2013 6:23 AM
To: bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>
Subject: [Bldg-sim] [Spam:*****] Energy needs at an early design stage

Dear all,
Does anyone of you know a software program which I can use to calculate the energy needs of a building (installed power) at an early stage (design). With the usual programs like EnergyPlus or Trnsys you need to insert a lot of parameters to get the information, parameters which  just aren't allways available in the design stage.
The calculations don't have to be very precise, I'm looking for a tool which can give an acceptable result, so we can give our customer an idea of how much power is needed for a certain building.

Greatfully,
Jens Wagemakers (The Netherlands)

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--
M. Dennis Knight, P.E., FASHRAE
Founder & CEO
Whole Building Systems, LLC
P.O. Box 1845
Mt. Pleasant, SC 29465
Phone: 843-437-3647
Email: dknight at wholebuildingsystems.com<mailto:dknight at wholebuildingsystems.com>
Website: www.wholebuildingsystems.com<http://www.wholebuildingsystems.com>

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