HVAC SIMulation PLUS other systems (HVACSIM+)

The first version of HVACSIM+, which stands for "HVAC SIMulation PLUS other systems", was introduced by National Institute of Standards and Technology (NIST) in 1985 as a computer simulation tool to simulate entire building systems. Since then, the HVACSIM+ computer program package and manuals have been distributed to researchers, students, and consultants in more than 40 countries around the world. Since the first distribution of the program to the public, a number of modifications have been made including the addition of the component models developed for the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) 825 project.