Progetto SIMEA - Automatica - Università degli Studi di Padova

SIMEA Stato dell’arte energetica degli edifici
1.2.9.5. Input
23
Doc.No 20100610.SIMEA.MR.03
Versione 1
When using BSim the building is divided into rooms, some in thermal zones. Only rooms in thermal
zones will be simulated dynamically, the rest can be used in other applications. The following groups of
information are needed: materials, building component, equipment and systems.
Rooms and thermal zones
The geometry of the rooms are created in the model graphic editor or imported from CAD drawings.
Room or rooms are attached to thermal zones by drag and drop in the tree structure of the model.
Constructions and materials
Description of type, density, thermal capacity, thermal conductivity, and PCM (phase change material)
properties. Walls, floors and roof constructions are built in layers according to the description of the
materials. All materials and constructions are defined in a database and attached to the model as defaults in
one operation or one by one by drag and drop from the database.
Systems and functions
Internal loads (e.g. persons, lighting, equipment, moisture load), natural single and multi zone
ventilation (e.g. infiltration, venting), heating (floor/construction and/or radiator) and cooling radiators, and
ventilation systems. All such "systems" are defined by the physical component as well as how it is controlled
and when in function.
Ventilation plants
Supply and exhaust fans as well as total pressure rise and total efficiency. Units of heat recovery,
heating and cooling coils, and humidifiers. Together with the control strategy chosen, these data form the
base for calculating the power demand and energy consumption necessary for running the ventilation plants.
Automatic control strategies
Are defined for each individual ventilation plant, e.g. changes in temperature, volume flow, moisture
content, readjustment between winter and summer periods. Differentiation is made between data of the
physical components of the plant (in the company catalogue) and the control function (automatic or manual
equipment).
Climate data
BSim uses climate data in binary format, but has a built-in function for converting text formatted
hourly data to the binary format. This function can automatically convert climate data files in
EnergyPlus/ESP-r weather format.
Default libraries
BSim comes with standard libraries for: constructions (walls, floors, roofs, and internal walls),
materials, glass, window frames, people loads, schedules and national constants. The connection between the
model and the libraries is handled by drag and drop operations in the building model. The user can choose
from these libraries or define new input.
Input interface
Input is given as properties of the individual objects or directly in the graphical representation of the
model.