The aim of 825-RP was to develop a set of tools and supporting data to allow the evaluation of HVAC control algorithms and strategies using computer simulation. Specific achievements of the project include:

• detailed documentation and modeling of the envelope, plant and controls of a mixed use, air-conditioned, building on the MIT campus

• development and documentation of new models to allow the explicit simulation of air flow in fan/duct systems, including fan control

• development of a library of control functions and skeleton code to facilitate the modeling of DDC controls

• production of a documented library of component models of mechanical equipment and control strategies in the formats of both the HVACSIM-f and TRNSYS public domain component-based simulation programs

• demonstration of the ability of the models to simulate various aspects of the controlled performance of VAV HVAC systems.