[Bldg-sim] Small building that wants to get LEED Platinum

[Eric O'Neill]

Hi Bill,

 

I've found it's very difficult, if not impossible, to control in the
actual building, especially as your slab thickness increases. The slab
can't cool at night and heat back up fast enough to get any meaningful
comfort control and energy savings. A controls contractor might try it
if there's a secondary heat source (probably just an 80% efficient
furnace in situations like this), but normally they just get overwritten
to a constant temperature. If you have someone who can spend a good
chunk of time commissioning it, you might be more successful... Has
anyone had better luck with this than me? 

 

Eric

 

From: Bishop, Bill [mailto:wbishop at pathfinder-ea.com] 
Sent: Monday, July 12, 2010 9:20 AM
To: Eric O'Neill
Subject: RE: [Bldg-sim] Small building that wants to get LEED Platinum

 

Eric,

 

I'm curious why you recommend avoiding in-slab radiant.

 

Bill

 

William Bishop, PE, BEMP, LEED(r) AP | Pathfinder Engineers & Architects
LLP

Mechanical Engineer

 

134 South Fitzhugh Street
Rochester, NY 14608
T: (585) 325-6004 Ext. 114
F: (585) 325-6005

wbishop at pathfinder-ea.com

www.pathfinder-ea.com

P Sustainability - less is more.

________________________________

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Eric
O'Neill
Sent: Monday, July 12, 2010 10:03 AM
To: James V Dirkes II, PE; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Small building that wants to get LEED Platinum

 

I'm assuming this is in Michigan. I'd bet on CO2 ventilation control
(although I'm not sure what the exhaust requirements are). You may even
only need a single CO2 sensor, although it will make control system
selection a little more interesting. Avoid in-slab radiant - night
setback will be important. An energy recovery unit may work out as well
(~5 year payback?), considering the high occupant density, cold winters,
and humid summers (Michigan makes you appreciate the blue sky). 

 

Sounds like one that you can have a little more fun with though, so some
of the other more creative ideas may work out well too. Good luck.

 

Eric

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of James V
Dirkes II, PE
Sent: Saturday, July 10, 2010 11:36 AM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Small building that wants to get LEED Platinum

 

Dear Modelers,

 

An A/E client is pursuing a project which wants to receive LEED Platinum
for a 2,000 square foot Subway restaurant.  I don't know Subway's "back
of the house" operations, but this sounds like a small restaurant with
very little cooking, plus "normal" lights and people.

 

My client thinks that Platinum certification will probably require ~30%
improvement over the Baseline energy use.

 

My question for you is this:

Assuming that we'll use top notch envelope and lighting systems, what
HVAC system do you think will enable 30% savings for such a small
building?  (Forget cost for the moment, just brainstorm!)

 

Thanks in advance.

 

The Building Performance Team
James V. Dirkes II, P.E., LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of mike
steadman
Sent: Thursday, June 24, 2010 4:19 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] question

 

Hi,

 

What software do you suggest for Modeling Commercial buildings?

 

I live in Michigan work for a company doing energy audits from
5000-120000 square feet.

 

Energy Plus -over my head

equest-CA defaults

DOE 2.1 or DOE 2.2 ?

 

Would like a free option and one that I have to buy?

Thank you 

 

Mike

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