What information is included in the local weather data?
A. 1) We use TMY2 data which is a statistical data base of “typical” hourly weather data for an entire year. The “typical year” represents data gleaned from 30 years of weather data. It implicitly includes cloud cover data as part of the radiation data. 2) The Solar Pathfinder Assistant uses the following information from the hourly data: • Direct solar radiation • Diffuse solar radiation • Snow cover • Ambient Dry Bulb Temperature (Solar Hot Water only) 3) More information about TMY2 can be found here: http://rredc.nrel.gov/solar/old_data/nsrdb/tmy2/ 4) Information about the EnergyPlus format can be found here: http://apps1.eere.energy.gov/buildings/energyplus/weatherdata_format_def.
