General Zone Model for HVACSIM(+) User's Manual

摘要

A general thermal model of a building zone or room implemented as a module forthe HVACSIM+ simulation program is described. This model differs from other zone models for modular simulators in the level of detail with which thermal processes can be represented. For example, the zone can be represented by an arbitrary number of nodes, among which there can be heat transfer by conduction, convection, and radiation. In particular, the lighting system can be modeled in detail, including the nonlinear power and light output of fluorescent lamps versus lamp wall temperature. Both short and long wavelength diffuse radiation is modeled. If desired, a plenum formed by a suspended ceiling can be included, and air flow can be routed through the zone and plenum in a manner specified by the user. If the need is for a simple zone model, most of the details can be omitted. From the perspective of the HVACSIM+ user, the model is like other TYPE subroutines, with inputs and outputs that allow it to be connected with other modules, and parameters that allow it to be specialized to particular zone characteristics. These HVACSIM+ interface sets are of reasonable size due to placing the details of the zone definition in a separate file.