[Equest-users] Manufacturing Building Energy Simulation- eQuest

[Paul Riemer]

Thanks for sharing Kendra.

If you are like me, with your LEED submittals having a laundry list of included addenda  and referenced CIRs, here are some details.

Kendra is referring to Addendum ac to 90.1-2004 which technically only changed the fan power requirements in Chapter 6 and not Appendix G but there is a CIR that extends the usage of ac, presumably for all LEED programs referencing 90.1-2004.

I am starting to watch the public reviews because that seems to be where the rules can be vetted and the rule changes are accelerating.

Paul Riemer
DUNHAM


From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Kendra Tupper
Sent: Thursday, May 21, 2009 9:23 AM
To: Ramana Koti
Cc: equest-users at lists.onebuilding.org; cic at jci.com
Subject: Re: [Equest-users] Manufacturing Building Energy Simulation- eQuest

I'm just finishing up the LEED energy modeling for a manufacturing plant where the unregulated process loads (compressed air, manufacturing tools, producing de-ionized water, etc.) is 76% of the total energy cost. We're able to achieve the required 10% savings over 90.1-2007 (for LEED 2009) with an extremely efficient chiller plant, aggressive daylighting and lighting controls,  heat recovery, and on site PV. We're submitting an exceptional calculation method for process load savings because we've recovered enough heat from the compressed air to completely eliminate the need for the process heating, and used more efficient tools. If the ECM gets accepted, we could get 3 more energy points, but we're planning on having to meet the required 10% without any ECMs.

One interesting thing that I discovered - ASHRAE 90.1-2007 is a bit more forgiving on manufacturing facilitieis because of the revised fan power calcs that let you take additional static pressure allowances for many things. If you're under LEED 2.2 and want to use 90.1-2004, I would strongly recommmend at least using the addenda that picks up this fan power change.


--
Kendra Tupper
Senior Consultant
Built Environment Team

Rocky Mountain Institute  |  T  303-567-8641 |  F  303-245-7213  |  www.rmi.org<http://www.rmi.org>
On Thu, May 21, 2009 at 7:33 AM, Ramana Koti <ramana.koti at gmail.com<mailto:ramana.koti at gmail.com>> wrote:
If you look up Credit Interpretation Requests on EA Cr1, you'll see that an alternate compliance path can be proposed that's specific to your  manufacturing facility, especially for end uses not regulated by Ashrae 90.1.

You'd probably still have to include all end uses.

Ramana.


On May 21, 2009, at 4:39 AM, cic at jci.com<mailto:cic at jci.com> wrote:

Dear All,

Refer the following data.

A  manufacturing building has the following area

Common area,office area                                                            = 22% of the building area which contribute 13% of a/c requirement
Manufacturing area   (clean room++)                                       = 57% of the building area which contribute 87% of a/c requirement
Un air-conditioned area                                                                 = 21% of the building area.

Now this building needs LEED Certification.

 To achieve EA Credit1, whether the clean room load(process)  needs to be considered in baseline design during modelling? or only we need to consider the common area+office area+Unconditioned area.

Advance thanks for your valuable feedback.

Thanks and regards
Kathiresan

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