This product contains links to files that consist of PowerPoint slides synchronized with the audio-recording of the speaker (recorded presentation), PDF files of the slides, and audio only (mp3) as noted.

The common practice in building performance modeling is to use 'Typical Year' weather data. Such data is statistically selected from the long-term record based on representative statistics for solar radiation and dry bulb temperature. However, although the use of a single typical year is convenient, it often leads to severe inaccuracies in the estimation of building loads and energy consumption. It is time to rethink alternatives to the use of Typical Year files. This seminar provides a deeper understanding of the problems linked to the use of Typical Years and walks the audience through several alternatives.

• How Much Does Energy Use Vary with 'Actual' Weather from Year to Year?
  Drury Crawley, Ph.D., Fellow ASHRAE
  
  
• How Much Do HVAC Loads Change Due to the Variability of Year-to-Year Weather?
  Yu Joe Huang
  
  
• Understanding the Temporal and Spatial Variability of New Generation Gridded Tmys
  Anthony Lopez, Aron Habte

Run Time: 90 mins.