[Equest-users] MSAV variable speed fan motor

[Mary Wyllie]

You all rock!  That gets me pointed in the right direction.  I do have a
ME that I can ask a few questions, but I don't have one on this job,
believe it or not.  And, my ME has no energy modeling experience.  Plus,
I believe that we architects need to get our feet wet with this stuff so
we know what's going on around us.

 

Mary Wyllie | AIA | LEED AP

Associate

Hiscutt & Associates, Inc.

3655 Brookside Pkwy., Suite 575

Alpharetta, GA 30022

(770) 753-8787

 

Reduce Reuse Recycle *

________________________________

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Carol
Gardner
Sent: Tuesday, May 11, 2010 4:46 PM
To: Fred Porter
Cc: eQUEST Users List
Subject: Re: [Equest-users] MSAV variable speed fan motor

 

Thanks, Fred. Just as good if PVVT. Actually I was going to say PVVT but
thought Mary said VAV and the tab's there for it, too. I would use it
with advice from an engineer or really knowledgeable HVAC guy. Yeah,
they are out there. 

Prolific poster indeed! I offer my services to people for real money,
too! I don't want to stand by a freeway with a will work for food sign.
None of us does.

Good to hear from you. Apologies in advance for putting it back on line.

Personal regards,
Carol




On Tue, May 11, 2010 at 1:32 PM, Fred Porter <FPorter at archenergy.com>
wrote:

Carol, 

You are quite the prolific poster! You might want to check your advice
in this case. I think  95% of the time this type of RTU should be
modeled as a PVVT, not PVAV. (I'm not sure the specific keywords are
enabled unless PVVT is the system TYPE anyway.)

 

It may be used with a few sub/slave zones with reheat it is not
typically applied as a true VAV unit, but as a large heat/cool unit with
variable flow and capacity responding to a single zone in various
complicated ways. I've seen these RTUs applied to the main zones of big
box stores. 

 

 

 

--

Fred W. Porter, B.Sc., LEED A.P.

Senior Analyst

Architectural Energy Corp. - Boulder
office: 303-444-4149 x425

direct: 303-459-7425
mobile: 303-748-4536



>>> On 5/11/2010 at 10:13 AM, in message
<AANLkTik9q1e5gbwiE7yS_gPF3vSgU7V-LgTmCXmTa95A at mail.gmail.com>, Carol
Gardner <cmg750 at gmail.com> wrote:

Hi Mary,

Actually this is pretty easy. You can select packaged VAV as your system
and then when you are in the detailed edit mode go to your HVAC tab,
then to the Air-Side HVAC System Parameters tab, then to the cooling
tab, and lastly to the Stages tab at the far right. That should work for
you. If you have a ME that you are working with a few questions to her
would help as to which option to choose. A good vendor can help with
this, too.

Let us know if ya need any more help.

Regards,
Carol

On Fri, May 7, 2010 at 7:14 AM, Mary Wyllie <MWyllie at hiscutt-aia.com>
wrote:

Does anyone have experience modeling multi-stage air volume roof top
units such as the Lennox Energence? Do I handle that as a VAV or stick
with constant volume and try and model it with schedules? And, yes, I'm
an architect trying to do an engineer's job, so be gentle with me. I've
already learned so much from reading all of your posts over the last few
months.

Mary Wyllie | AIA | LEED AP

Associate

Hiscutt & Associates, Inc.

3655 Brookside Pkwy., Suite 575

Alpharetta, GA 30022

(770) 753-8787

Reduce Reuse Recycle *


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