[Equest-users] LEED v3 and Weather Data

[Jeremy Poling]

There is a process you can use with the BIN file, but it is more effort than using the ASHRAE Fundamentals tables Steven referenced.  If you use the ASHRAE Fundamentals tables, while you are there you should also make sure you setup your design day keywords in eQuest (under the "Project" information tab) to match ASHRAE as well.

To get the degree days from the bin file, you need to convert the bin file to a text file, import into Excel (clean format), and then manually calculate the degree days from the hourly temperatures either by calculating average daily temp or dividing each days heating/cooling degree-hours by 24.  The answers will be different depending on which method you choose.

The directions on converting a bin file to a text file are a bit lengthy but are included in the readme file with the utility at http://doe2.com/download/weather/DOE22WeatherUtilities.ZIP.  You'll spend a good deal of time in a text editor (notepad will do fine if you're on a PC).

Jeremy R. Poling, PE, LEED AP+BDC


From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Steven Savich
Sent: Wednesday, February 22, 2012 2:55 PM
To: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] LEED v3 and Weather Data

Michael,

Use the ASHRAE HDD & CDD data from the fundamentals handbook.  The tables are in the 2001 paper copy of fundamentals, but I believe you need the electronic files on the CD for later editions of ASHRAE fundamentals.

Steven

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of M. Shields
Sent: Wednesday, February 22, 2012 12:41 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] LEED v3 and Weather Data

Hi All,

I looked through the archives and I don't see this addressed, so I hope I didn't miss it. For LEED v3 EAp2 the form asks for the weather file and then the HDD and CDD source. I used the TMY2 data file for my city in the model but I can't figure out how to determine the HDD and CDD for this source. Does anyone know either how to determine the HDD/CDD numbers from equest or the .bin file, or if the ASHRAE numbers are the same as the TM2 data.

Thanks
____________________________
Michael Shields

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