[Bldg-sim] LEED - What does it take?

[Dennis Knight]

Nick,
I agree with you, and depending on what you are using as your evaluation
criteria throw in COP and other metrics as well.  If you have the
opportunity of working directly with the Owners early you should help them
set an energy target for the project or help them establish energy
efficiency standards for all energy using/consuming systems and components.
 A 10% improvement in your big three will not necessarily translate into a
10% improvement in total energy consumption of the whole building if that
is what Robert is trying to achieve.  It is a team effort and the owner has
to be at the top of the pyramid.  The owner has to be in the driver's seat
and buy into all of this in order to "burst the bubbles" of silo thinking
team members.  It is, after all, the owner's money.  Neither trades people
nor designers should be making decisions for the owner that the owner does
not understand or that does not meet the owners project requirements,
budget and expectations.
Dennis

On Wed, Jan 16, 2013 at 5:37 PM, Nick Caton <ncaton at smithboucher.com> wrote:

> To answer the SEER question, 1.1*13 = 14.3, all things being equal.  (If
> you're talking heatpumps, consider your HSPF's as well for the heating
> season.)
>
> Again, this is all a simplified guideline for early decisionmaking, but
> the situation you're describing with all trades "pointing fingers" is
> exactly the paradigm I'm advising to kick out the door early to ensure
> success as a team.  It's much harder to do later in the game!
>
> Building performance is a team effort, and a team can only do as well as
> the weakest link.  If and when someone I'm working alongside is stubbornly
> designing "in a bubble" to the detriment of the project, I consider it as
> the energy modeler's imperitive to demonstrate this to the rest of the team
> if necessary.
>
> As an example: More than once I've been able to give lighting designers a
> big "ah-ha!" moment by showing how major even a small LPD reduction can be
> when mechanical and envelope designers are pulling their weight.  It can
> also be humbling when you consider the costs implications of a 10%
> reduction in installed lighting wattage against the equivalent effects of
> getting all the premium bells and whistles for the chiller plant.
>
> ~Nick
>
> NICK CATON, P.E.
> SENIOR ENGINEER
>
> Smith & Boucher Engineers
> 25501 west valley parkway, suite 200
> olathe, ks 66061
> direct 913.344.0036
> fax 913.345.0617
> www.smithboucher.com
>
>
> -----Original Message-----
> From: David Eldridge [mailto:DEldridge at grummanbutkus.com]
> Sent: Wednesday, January 16, 2013 4:20 PM
> To: RobertWichert
> Cc: Nick Caton; bldg-sim at lists.onebuilding.org
> Subject: Re: [Bldg-sim] LEED - What does it take?
>
> Also the SEER only helps you while the A/C is on...meanwhile the lights
> are chugging along at "budgeted" rates every day eating away your 10%
> reduction in cooling end-use.
>
> DSE Mobile
>
> On Jan 16, 2013, at 4:12 PM, "RobertWichert" <robert at wichert.org> wrote:
>
> > My current project has very good windows, "standard" walls, you're right
> about the lighting, it's right on budget (but residential doesn't really
> have a budget, so the small common areas are right on budget), better than
> standard roof.
> >
> > I absolutely agree with you, Nick, on achieving 10% better, but all the
> trades point to the others.  It's kind of comical, actually.
> >
> > I guess my question on this list could be rephrased, using your
> approach, as "What SEER is 10% better than SEER 13?"
> >
> >
> >
> >
> > Robert Wichert P.Eng. LEED AP BD&C
> > +1 916 966 9060
> > FAX +1 916 966 9068
> >
> >
> >
> >
> >
> >
> >
> > ===============================================
> >
> > On 1/16/2013 12:34 PM, Nick Caton wrote:
> >> A very simple way of looking at LEED & energy, which I come back to
> often for discussions on that level, is to consider a building's
> performance like a tripod with three important legs:  Lights, Mechanical,
> and Envelope.  If any of those legs is too short, the tripod falls over.
> >>
> >> Building on that analogy, to do 10% better than a LEED baseline, a good
> starting place is to have at least:
> >> -  10% better lighting (10% lower LPD),
> >> -  10% better HVAC & hot water heating (10% better efficiencies), and
> >> -  10% better envelope (10% more insulation in walls/roof, 10% better
> windows).
> >> For each of these, you can source the baseline/prescriptive levels from
> the standard of your choosing.
> >>
> >> Overperforming in one area can sometimes make up for underperfomance in
> another, but with diminishing returns.  Amazing HVAC equipment/design has a
> harder time shining when you have a poor envelope and/or the lighting
> designer treats LPD's as a "budget" they have to use up.  For such reasons,
> it's advisable to always consider building performance in holistic fashion
> in early/broader discussions.
> >>
> >> That's my (simple) take anyway!
> >>
> >> ~Nick
> >>
> >> NICK CATON, P.E.
> >> SENIOR ENGINEER
> >>
> >> Smith & Boucher Engineers
> >> 25501 west valley parkway, suite 200
> >> olathe, ks 66061
> >> direct 913.344.0036
> >> fax 913.345.0617
> >> www.smithboucher.com
> >>
> >>
> >> -----Original Message-----
> >> From: bldg-sim-bounces at lists.onebuilding.org [mailto:
> bldg-sim-bounces at lists.onebuilding.org] On Behalf Of RobertWichert
> >> Sent: Wednesday, January 16, 2013 9:24 AM
> >> To: EnergyPro at yahoogroups.com; bldg-sim at lists.onebuilding.org
> >> Subject: [Bldg-sim] LEED - What does it take?
> >>
> >> I know that LEED is way more than just energy, and energy is way more
> than just equipment, but just for a basis, what SEER and EER do people have
> to use to get 10% better than ASHRAE 90.1 to qualify for LEED?  I also know
> that you don't have to use ASHRAE 90.1, but that is what I am doing.
> >>
> >> So, what does it take?
> >>
> >> My shot - Residential Apartment, individual DX units, 17 SEER and 13
> EER in California CZ 12 (Mostly cooling).
> >>
> >>   Next?
> >>
> >>
> >> --
> >> Robert Wichert P.Eng. LEED AP BD&C
> >> +1 916 966 9060
> >> FAX +1 916 966 9068
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> ===============================================
> >>
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-- 
M. Dennis Knight, P.E.
Founder & CEO
*W*hole *B*uilding *S*ystems, LLC
P.O. Box 1845
Mt. Pleasant, SC 29465
Phone: 843-437-3647
Email: dknight at wholebuildingsystems.com
Website: www.wholebuildingsystems.com
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