[TRNSYS-users] weather data

[Cramer Silkworth]

Xiao,
 
TMY2 files are just text files, they can be opened with notepad.
However, it's quite difficult to read that way, but if you open it with
Excel you can separate the columns. There are a few templates that have
been made to speed this process, such as:
http://sel.me.wisc.edu/trnsys/weather/tmy2data.htm
 
To control the time period of simulation, go to the Assembly menu and
hit Control Cards. The first two values (Start Time and Stop Time)
control the hour of the year when the simulation starts and stops, and
Trnsys uses the corresponding weather data. 
 
-Cramer
 

J. Cramer Silkworth

Transsolar Climate Engineering

Technical consulting for energy efficiency and environmental quality in
buildings.

145 Hudson Street

Suite 402

New York, NY 10013

Office: 212-219-2255

silkworth at transsolar.com


  _____  

From: xiao shi [mailto:xiaoxxs at gmail.com] 
Sent: Wednesday, December 17, 2008 5:04 PM
To: TRNSYS-users at cae.wisc.edu
Subject: [TRNSYS-users] weather data


Hi everyone,

I have a question about the weather data. The weather data is "The TMY2s
data sets of hourly values of solar radiation and meteorological
elements for a 1-year period', found in the readme file of the weather
data. I do not know how to open the weather data so I cannot see the
value of the solar radiation. Furthermore, I dont know which data has
been used in the simulation studio. For example, my simulation is only
for 200hr but the weather data should give 8760 data value base on the
readme file found in TRNSYS. How does stimulation studio know which
weather data should be use. If I want to simulate the summer's data
instead of winter's data, how does TRNSYS know? Thank you for your
answer.

Xiao 

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