Table 1 Nomenclature energy system characterization
Term | Signification |
|---|---|
T a | Ambient temperature |
T z , C z | Zone (room) temperature and thermal capacity |
T wo, C wo | Outside wall temperature and thermal capacity |
T wi, C wi | Inside wall temperature and thermal capacity |
T f , C f | Zone floor temperature and thermal capacity |
T cs | Cellar or creeping space temperature |
R roof | Thermal resistance of roof |
R window | Thermal resistance of windows |
R wo−a | Thermal resistance between outside wall and ambient |
R wi-wo | Thermal resistance between outside and inside wall |
R z−wi | Thermal resistance between zone and inside wall |
R z−f | Thermal resistance between zone and floor |
R f−cs | Thermal resistance between floor and concrete structure |
q vent | Ventilation heat flow |
q inf | Infiltration heat flow |
q gain | Internal gain heat flow |
D c,t | Heating load flow (heating Demand) |
ϕ air,inf | Infiltration air flow [ m 3/h] |
ϕ air,vent | Ventilation air flow [ m 3/h] |
ρ air | Air density |
c p,air | Specific heat capacity of air |