[Equest-users] LEED review comments for System 5 heating source

[Li, Lan]

Paul, Paul and Carol,

 

This sentence just jumps into my eyes.  It is on ASHREA 90.1-2007 User's
manual page G-22. 

 

Here is the interception. 

 

The performance rating rules for the baseline building HVAC system are
shown in Table G-A. This table shows the baseline building system types,
based on building type (nonresidential or

residential), the number of floors, the floor area and the heating
source (electric or other). Note that a hybrid system refers to a system
with any combination of fossil and electric heat, and the baseline
system for this is a fossil fuel system.

 

I think I will stick with my gun and go for it. I will keep all of you
posted for the outcome of my review. Hopefully everyone will be clear on
this matter then.

 

Thanks!

 

Lan

Lan Li, PE, LEED AP BD+C

Mechanical Engineer

Scheeser Buckley Mayfield LLC                                     

1540 Corporate Woods Parkway

Uniontown, OH 44685

Phone: (330) 896-4664 ext. 123

Fax: (330) 896-9180

Cell:(330) 904-6292

 

lli at sbmce.com <mailto:lli at sbmce.com> 

www.sbmce.com <http://www.sbmce.com/> 

 

Columbus Office (614) 448-1498

* Please consider the environment before printing this email.

This e-mail (including any attachments) is confidential and may be
legally privileged. If you are not an intended recipient or an
authorized representative of an intended recipient, you are prohibited
from using, copying or distributing the information in this e-mail or
its attachments. If you have received this e-mail in error, please
notify the sender immediately by return e-mail and delete all copies of
this message and any attachments. 

Thank you

 

________________________________

From: Paul Diglio [mailto:paul.diglio at sbcglobal.net] 
Sent: Thursday, June 30, 2011 5:48 PM
To: Li, Lan; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] LEED review comments for System 5 heating
source

 

Lan:

90.1-2007 requires a system 5 with a fossil fuel hot water boiler as you
have modeled, but in 90.1-2007 Table G3.1 Number 10 HVAC Systems Base
Building Performance column it states that you need to meet any
system-specific requirements in Section G3.1.3.

In G3.1.3.2, it states that for system 5, the boiler plant shall use the
same fuel as the proposed design, which in your case is electric
resistance and compressor heat pump energy.  I would model electric hot
water boilers.

Paul Diglio

 

________________________________

From: "Li, Lan" <lli at sbmce.com>
To: equest-users at lists.onebuilding.org
Sent: Thu, June 30, 2011 4:24:27 PM
Subject: [Equest-users] LEED review comments for System 5 heating source

Dear eQuesters,

 

I just got LEED review comments for my project. Our proposed design is
VRF system with roof top unit providing ventilation air. Roof top unit
is using gas as heating source. There are misc. elec. heaters in the
building for places like entries. I interpreted my building heating
source as "electric hybrid" and used hot water fossil fuel boiler as my
base design. The comments I got read as the follows:

Section 1.1.A of the form indicates that the primary heating source is
fossil fuel. However, the electric heating energy use reported in Table
EAp2-5 for the Proposed Case exceeds the fossil fuel heating energy use.
Please verify that the correct heating source has been selected. If
electric heating is the primary heating source, please change the
Baseline system type accordingly. Provide updated simulation results and
a revised Prerequisite Form as necessary.

I couldn't find an official definition either on LEED reference book or
90.1. What is your take on this?

Your input is highly appreciated! Thank you very much!

Lan

 

 

 

Lan Li, PE, LEED AP BD+C

Mechanical Engineer

Scheeser Buckley Mayfield LLC                                     

1540 Corporate Woods Parkway

Uniontown, OH 44685

Phone: (330) 896-4664 ext. 123

Fax: (330) 896-9180

Cell:(330) 904-6292

 

lli at sbmce.com <mailto:lli at sbmce.com> 

www.sbmce.com <http://www.sbmce.com/> 

 

Columbus Office (614) 448-1498

* Please consider the environment before printing this email.

This e-mail (including any attachments) is confidential and may be
legally privileged. If you are not an intended recipient or an
authorized representative of an intended recipient, you are prohibited
from using, copying or distributing the information in this e-mail or
its attachments. If you have received this e-mail in error, please
notify the sender immediately by return e-mail and delete all copies of
this message and any attachments. 

Thank you

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20110701/3e478338/attachment-0001.htm>