Phase change thermal energy storage and the model building codes

Abstract

Thermal energy systems using phase change materials are currently being developed and used for storing energy collected by solar and other means. This report is intended to bridge the gap between those who design and install phase change thermal storage devices and the building code official who evaluates these devices for code compliance. The first part of this report introduces the more commonly accepted phase change materials and systems, presents a taxonomy which is applicable to building construction, and describes the interface between the various model codes and the more advanced phase change system configurations. The report continues with an anaysis of the model codes with a specific orientation toward phase change thermal energy storage systems. The analysis is structured according to building, mechanical, and plumbing issues with topics relevant to phase change systems identified and specific code provisions applicable to each topic listed. In addition, an appendix is provided which cross references relevant topics according to individual model code requirements.