5.3.7. Calculations results of seasonal energy demand <br>

### 5.3.7. Calculations results of seasonal energy demand

Calculations results of seasonal energy demand for a building include:

- Setting-up of thermal zones data,

- Setting-up of individual positions of energy balance.

Setting-up of thermal zones data includes following data

Name of thermal zone |  | [ - ]
Compartments Number | sum of compartments assigned to specific thermal zone and their names | [ - ]
Vs | cubic capacity of all compartments in thermal zone | [m3]
tśr/θśr | average temperature of compartments in thermal zone | [0C]
Qi/Φi | total internal heat gains in thermal zone | [W]
Opis | comment to a name of thermal zone | [0C]

Seasonal energy demand includes cumulative table setting up the calculations results of losses and gains of building energy for individual months and individual positions of energy balance. Seasonal energy demand is calculated for heating season.

Month | name of following month in calendar year | [ - ]
Qsz | sum of loss of building energy through all external partitions, except of ground during specific month | [MJ]
Qprz.n. | sum of loss of building energy through non-heated compartments during specific month | [MJ]
Qg | sum of loss of building energy through partitions on the ground during specific month | [MJ]
Qsw | sum of energy loss for warming-up of ventilation air flowing through building | [MJ]
Qint | sum of internal heat gains in building generated by people, lighting, electric devices, cooking, warm water | [MJ]
Qs | sum of internal heat gains in building generated by insolation | [MJ]
Qh | sum of gains and losses of building energy for specific month, calculated for all positions of energy balance | [MJ]