ZEMCH 2015 - International Conference Proceedings | Page 466

The quality of these proposed materials allow obtaining a better thermal isolation and consequently, the building receive less heat gains and the cooling demand low down.

Figure 19: DB1 Thermal bridging ambient figures. Colour infrared (centre) flux vectors (right).
These upgrading characteristic allow the prototype DB1 to obtain the following cooling and heating loads (Fig. 20).

Figure 20: DB1 monthly cooling demand (left) and annual heating demand (right).
The DB1 simulation results and the achievement of the Passive house requirements are clarified in
the following table (Table 6).
Table 6: DB1 energy consumption parameters and Passive house requirements.
DB1

Heating*

Cooling*

Energy

Energy
Annual heating Heating load Overall space Cooling load Primary Energy
(W/m2)
(kWh/m2a)
reduction
demand
(W/m2)
cooling
through
(kWh/m2a)
demand (kWh/
renewables
m2a)
(kWh/m2a)
Consumption parameters

0

Fulfil Passive house
requirements

X

12

58

37

279

-

*It is enough when only one of the parameters is fulfilled.

The DB1 simulation results showed an impressive improvement on reducing the heating load,
while the cooling demand is also improved. However, as the cooling load and demands are still
quite elevated the energy consumption kept high. Therefore, it could be understood that the
prototype is lacking of good ventilation or window shading.

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ZEMCH 2015 | International Conference | Bari - Lecce, Italy