Refinements And Improvements To The Radiant Time Series Method

This paper provides an overview of recent refinements and improvements to the Radiant Time Series Method (RTSM) as part of 1326-RP. These refinements and improvements include updating the fenestration model to be consistent with currently available manufacturers\u27 data, development of a correction for heat losses that can be significant in buildings with high percentages of single-pane glazing on the façade, and development of compact procedures for computing radiant time factors (RTF) and conduction time series factors (CTSF). In addition, verification of the RTSM against the Heat Balance Method (HBM) with a large parametric study is also summarized. ©2010 ASHRAE