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Title: HVACSIM+ building systems and equipment simulation program: building-loads calculation

Technical Report ·
OSTI ID:5760329

A nonproprietary building-system simulation program called HVACSIM+, which stands for HVAC SIMulation PLUS other systems, was developed at the National Bureau of Standards (NBS) in an effort to understand the dynamic interactions between a building shell, an HVAC system, and building controls. HVACSIM+ consists of a main simulation program, a library of HVAC system component models, a building shell model, and interactive front end input-data-generation programs. The report presents the overall architecture of the HVACSIM+ program, algorithms used in the main simulation program, a brief discussion of the numerical methods used in solving a system of nonlinear simultaneous equations, integrating stiff ordinary differential equations and interpolating data and descriptions of the building shell and zone models.

Research Organization:
National Bureau of Standards, Washington, DC (USA). Building Equipment Div.
OSTI ID:
5760329
Report Number(s):
PB-86-189909/XAB; NBSIR-86/3331
Country of Publication:
United States
Language:
English