Building modeling. Main characteristics

The analysis will deal with a theoretical building (used in the IEA-ECBCS annex 48 project — Heating Pumping and Reversible Air Conditioning -) fully defined by P. Stabat [3] . It is a twelve identical floors, 15000 m2 building with average 1000 persons occupancy. Representative existing European office building parameters are used [3] . Set points and ventilation rate are defined in table 2. . U value [W/(m2 K)] for external walls is 0.8, 0.4 for roof and 2.95 for glazing.

Ventilation rate (maximum occupation)

25 m3/h/person in offices (1 person/12 m2)

30 m3/h/person in conference room (1 person/3.5 m2) 6h-20h during week — Stopped during weekend

Set point temperatures

21°C — 24°C

inoccupation heating temperature : 15°C

heating from 6h to 20h except Saturday and Sunday

Air conditioning stopped during non occupation period

Table 2. Temperature set points and ventilation rate

In TRNSYS, only one floor with 5 thermal zones is simulated, there is no heat transfer considered between floors.