Abstract
This paper presents a flexible and expandable database of the equipment characteristics of air conditioning in which interactions among building equipments are well considered. These characteristic databases are always maintained in a neutral and fair manner by the five subcommittees, which are not influenced by any specific manufacturer. In this paper, the importance of modifiability of equipment databases, the expandability of equipment databases, and the details of developing equipment characteristic databases are discussed. This database has three data sets (nominal performance characteristics, part load performance characteristics, and dynamic performance characteristics) which are solved by applying two modeling methods (empirical model and/or physics-based model) to represent equipment characteristics to provide shorter calculation cycles in the coupled calculation within the entire building calculation. Energy consumption by this database is validated via sensitivity analysis. The central heat source that performs unit number division is significantly influenced by dynamic performance characteristics, while the decentralized cooling and heating equipment is significantly influenced by methods for representing equipment characteristics under the minimum part load ratio.
