[Bldg-sim] 90.1 Climate Zone question

Jones, Christopher via Bldg-sim bldg-sim at lists.onebuilding.org
Fri Jul 28 12:47:21 PDT 2017


Thank you Rahul,
Standard 169-2013 shows Toronto, Ontario in Climate Zone 5A versus 90.1-2013 showing 6A.


Christopher R. Jones, P.Eng.
Technical Specialist
Sustainability & Energy

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T +1 416-644-0252

2300 Yonge Street, Suite 2300
Toronto, ON M4P 1E4 Canada

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From: Athalye, Rahul A [mailto:Rahul.Athalye at pnnl.gov]
Sent: Friday, July 28, 2017 3:28 PM
To: Jones, Christopher <Christopher.r.Jones at wsp.com>
Subject: RE: 90.1 Climate Zone question

My guess is you will have to use the climate zone specified in 90.1-2010.

There was an update to climate data in the 2009 ASHRAE Fundamentals. There may have been subsequent updates. Many locations got warmer. Standard 169-2013 used the new data and remapped counties to climate zones. ASHRAE 90.1-2016 has adopted Standard 169-2013; counties that moved to a different climate zone could have different requirements than before.

Rahul


__________________________________________________
Rahul Athalye
Pacific Northwest National Laboratory




From: Bldg-sim [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Jones, Christopher via Bldg-sim
Sent: Friday, July 28, 2017 10:45 AM
To: bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>
Subject: [Bldg-sim] 90.1 Climate Zone question

I have a question about the correct Climate Zone for 90.1-2010. This is for Toronto, Ontario. Table B1-2 lists Toronto in Climate Zone 6. Table D-2 shows HDD = 7306 for Toronto.

But the ASHRAE Fundamentals 2017 and the Ontario Building Code show HDD = 7006 for Toronto. That would put Toronto in Climate Zone 5.

Therefore, I am wondering if I should use Climate Zone 5 for determining the baseline model envelope characteristics for a LEED v4 submission? Or would that bring the wrath of the reviewer?


Christopher R. Jones, P.Eng.
Technical Specialist
Sustainability & Energy

[cid:image001.png at 01D307B8.C9625D00]
T +1 416-644-0252

2300 Yonge Street, Suite 2300
Toronto, ON M4P 1E4 Canada
wsp.com


Please consider the environment before printing...



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