Report
ASHRAE has published a series of load calculation manuals, starting in 1980 with the Cooling and Heating Load Calculation Manual by William Rudoy and Joseph Cuba. The fourth in the series was the 2009 Load Calculation Application Manual . Since then, significant advances in the state of the art for load calculations were made by a series of ASHRAE research projects, including 1311-RP (new methods and data for computing the effects of internal shading on solar heat gains), 1453-RP (new globally-applicable clear sky model), 1482-RP (new internal heat gain data for office equipment), 1326-RP (new kitchen equipment heat gain data), and 1613-RP (new weather data). This research project incorporated the new data and methods into the radiant time series method and produced the Load Calculation Application Manual, 2nd Edition. Which was published by ASHRAE right before the ASHRAE 2015 winter meeting. A parametric study was used to investigate the effects of new weather data and clear sky model. For a typical base zone and a highly glazed zone in nine locations around the world, the combination of new weather data and clear sky model gave peak cooling loads that were between 3% higher and 9% lower than peak cooling loads calculated with the weather data and clear sky model that appeared in the 2009 Load Calculation Application Manual .