[Bldg-sim] EQUEST or IES for ASHRAE 90.1 modelling??
Paul Riemer
Paul.Riemer at dunhameng.com
Mon May 16 07:54:59 PDT 2011
Claire,
I had an interesting conversation with an IES rep about automated ASHRAE 90.1 Appendix G baseline models. He talked about the software developer thinking that they were 90% done about two years ago, it was much more challenging than they thought it would be, but it's ready now.
Then I asked about the aspect that seems hardest to automate to me and his answer became let me get back to you. It is not their fault. ASHRAE 90.1 Appendix G was never written to be automated the way that UK standards were, it is a moving target because of addenda, adopting authorities change things (LEED DES), and it is open to interpretations. If you are making your business decisions based upon the Appendix G automation features, I suggest you look at the specific aspects that they can automate vs. what you need the most help with.
A true craftsperson never blames the tools and good management equips their staff well.
Good luck,
Paul Riemer, PE, LEED AP
Associate / Mechanical
Direct: 612-465-7696
DUNHAM
From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Martin Roy ing. LEED AP
Sent: Monday, May 16, 2011 9:29 AM
To: Chris Yates
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] EQUEST or IES for ASHRAE 90.1 modelling??
We use Equest, free, and title 24(based on ASHRAE 90.1) reference case is possible.
Engine is DOE2.2 and you can modify .bld
Martin
At 04:47 16/05/2011, Chris Yates wrote:
Claire,
I believe that you have to use ApHVAC for A90.1 modelling in IES. Some people find this quite challenging.
Chris
On 16/05/2011 09:42, Claire Das Bhaumik wrote:
Which software package would you recommend for ASHRAE 90.1
modelling?
At the moment I'm thinking:
- IES: more user
friendly and likely to be quicker especially
with complex geometries, but expensive (we already use IES but would
have to pay for the ASHRAE 90.1 navigator and related modules and
training, support)
- EQUEST - less
automated and less suited to complex geometries
but cheaper and maybe designed more for ASHRAE modelling, less support
(but maybe more support from other users as software is widely used),
based on 'British' units (we are in UK so this means we generally have
to convert units)
- Tas - slow and
clunky but gets there in the end, bit of a
non-runner in the long term for ASHRAE as you have to build all the
buildings manually, unless they actually release the long-promised
ASHRAE plug in
Thanks,
Dr Claire Das Bhaumik
Senior Environmental Modeller
HOARE LEA
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