This package contains models to read weather data. The weather data format is the Typical Meteorological Year (TMY3) as obtained from the EnergyPlus web site at http://apps1.eere.energy.gov/buildings/energyplus/cfm/weather_data.cfm.
To add new weather data, proceed as follows:
epw extension from
http://apps1.eere.energy.gov/buildings/energyplus/cfm/weather_data.cfm.
Buildings/Resources/weatherdata (or to any directory
for which you have write permission).
cd Buildings/Resources/weatherdata java -jar ../bin/ConvertWeatherData.jar inputFile.epwThis will generate the weather data file
inputFile.mos, which can be read
by the model
Buildings.BoundaryConditions.WeatherData.ReaderTMY3.
The TMY3 weather data, as well as the EnergyPlus weather data, start at 1:00 AM on January 1, and provide hourly data until midnight on December 31. Thus, the first entry for temperatures, humidity, wind speed etc. are values at 1:00 AM and not at midnight. Furthermore, the TMY3 weather data files can have values at midnight of December 31 that may be significantly different from the values at 1:00 AM on January 1. Since annual simulations require weather data that start at 0:00 on January 1, data need to be provided for this hour. Due to the possibly large change in weatherdata between 1:00 AM on January 1 and midnight at December 31, the weather data files in the Buildings library do not use the data entry from midnight at December 31 as the value for t=0. Rather, the value from 1:00 AM on January 1 is duplicated and used for 0:00 on January 1. To maintain a data record with 8760 hours, the weather data record from midnight at December 31 is deleted. These changes in the weather data file are done in the Java program that converts EnergyPlus weather data file to Modelica weather data files, and which is described below.