Long wave radiation exchange for urban scale modelling within a co-simulation environment

摘要: This paper describes the implementation of long wave radiation (LWR) exchange as part a co-simulation process an urban scale simulation program, CitySim, and building EnergyPlus. coupling was achieved through use functional mockup units (FMU) to various weather, load, environmental information between two engines. LWR is important factor programs CitySim has more advanced capabilities for calculations from set buildings EnergyPlus heating cooling load calculation engine. The surfaces computed in by linearization longwave energy balance at each surface around average its temperatures. temperature determined using simplied algorithm neglecting inter-reections aggregated into single, global radiant (Tenv). implemented sharing variables Tenv henv that are then used calculate gain or loss envelope well inuence on conductances surfaces. approach overrides conventional ground, sky air calculations. Solo coupled simulations performed four scenarios result up 36% discrepancy 11% amongst solo simulations.