[Equest-users] Temperature in weather data

[Chris Jones]

Joe
Given that the time steps are an hour, and the 
fact that weather data is averaged over an hour, 
plus the fact that the building local will have 
variations from the weather station local, would 
an extra decimal point provide more useful information?


At 07:43 AM 25/07/2012, Joe Huang wrote:
>This is not possible at present without changing 
>the DOE-2.2 source code to read a weather input 
>file with decimal values. When DOE-2 was first 
>designed in the early 1980's, memory was a big 
>concern, so the weather data was reduced to 
>integers and then packed, which is why the DOE-2 
>*.BIN file is so small (146K). I have actually 
>developed a modified file format for *.BIN where 
>I save an extra digit of precision, i.e., 
>temperatures to 0.1F instead of 1 F, but the 
>source code would also need to be changed 
>slightly to read this extra information. I've 
>mentioned this to the developer of 
>eQUEST/DOE-2.2 and will be experimenting with 
>making this change to the source code. If and 
>when it's proven to work and gets incorporated 
>into DOE-2.2, I'll let everyone know. I welcome 
>anyone who thinks this is a useful modification 
>to send me an e-mail. It might spur me on to do 
>something! Joe On 7/23/2012 2:44 AM, 蔡昀芝 
>wrote: > Hi, everyone: > > We know that eQUEST 
>can edit personal weather data. > But the 
>dry-bulb and wet-bulb temperature in weather 
>data can only > enter integers. > Is it possible 
>to have more precise temperature to decimal 
>place? > Thank you very much. > > > 
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>Joe Huang White Box Technologies, Inc. 346 Rheem 
>Blvd., Suite 108D Moraga, CA 94556 (o) 
>(925)388-0265 (c) (510)928-2683 
>www.whiteboxtechnologies.com "Building energy 
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 >>
Christopher Jones, P.Eng.
Suite 1801, 1 Yonge Street
Toronto, ON M5E1W7
Tel. 416-203-7465
Fax. 416-946-1005
email cj at enersave.ca