Building energy and system simulation programs : model development, coupling and integration

This paper presents some results of the development and application work of the Building Equipmentsection at EMPA related to integrated building and HVAC simulation environments. Routines for thermal comfort evaluations with DOE2 are developed and COMVEN, the simulation code of the COMIS multizone air flow program, has been adapted as a type for TRNSYS. The application potential. for this coupling is demonstrated for a retrofit study of a school building, naturally ventilated through a glazed double facade. Secondly a general physical model for closed circuit cooling towers is described including comparison with measured manufacturer data sets.