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Re: [TRNSYS-users] TRNSYS Weather File Construction



Hi Craig,
perhaps you give you a try to look at 
ASHRAE Handbook 1985 Fundamentals (SI-Edition).
Chapter 26 Table 2 and Table 3. In the text you will find calculation examples for generating hourly values out of design dry-bulb temperature and mean daily range (see Table 1, Chapter 24), and Chapter 26, Table 3 (hourly) percentage of the Daily range. This same hourly percentage is also used in program NBSLD (NBS, Tamami Kusuda), where you give the dry-bulb temp. and the mean daily range in the input data.

Kind regards
Christian


Dr.-Ing. Karl-Christian Rauch i.R.
Ladestr. 22
48324 Sendenhorst



David BRADLEY via TRNSYS-users <trnsys-users@lists.onebuilding.org> schrieb am Di. 1. Dez. 2020 um 22:41:

Craig,

 I would try and find an hourly data file for a location that is near to the RETScreen location. TRNSYS reads half a dozen or so different weather data file syntaxes and there is a data base of Canadian weather in *.epw format that has a pretty extensive site list. There is a component in Trnsys that will generate hourly data based on monthly averages but not one that will do so based on daily data.

kind regards,

 David


On 12/01/2020 11:51, Craig Francis via TRNSYS-users wrote:
Hi Everyone:
I am new to TRNSYS and looking for a bit of help around constructing a weather file readable by TRNSYS. I have some NASA weather data for a site that I extracted from RETScreen, however these are daily data. Is there anyway to have TRNSYS convert these to say hourly data, or data consistent with the simulation steps?
Thanks in advance.

Craig




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David BRADLEY
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