15.07.2015   EuroSun2008-4

Improvements to comply with energy requirements

Since the heating energy criteria is not met in most of the apartments, a new round of upgrade measures is necessary to achieve compliance. Table 7 shows the upgrade measures considered in each of the apartments in order to try to achieve the compliance. Table 8 shows the results after this new round of constructive changes. The results show that all apartments now fall within energy class B.

This clearly shows that the compliance with the energy requirements of the RCCTE is possible without interfering with the architectural appearance of the building and even without solar thermal collectors for domestic water heating.

Table 7: Changes considered in order to comply with the energy requirements

Apartment 1

Added 8 cm of thermal insulation, resulting in U=0.37 W/m2°C

Apartment 2

Added 3 cm of thermal insulation, resulting in U=0.83 W/m2°C

Apartment 3

Added 8 cm of thermal insulation, resulting in U=0.32 W/m2°C

Apartment 4

Already complies

Apartment 5

Added 4 cm of thermal insulation, resulting in U=0.68 W/m2°C

Apartment 6

Added 4 cm of thermal insulation, resulting in U=0.68 W/m2°C

Table 8: Energy indexes after the upgrade to ensure compliance

Apartment 1

Apartment 2

Apartment 3

Apartment 4

Apartment 5

Apartment 6

Nic/Ni

100 %

82 %

99 %

68 %

95 %

78 %

Nvc/Nv

28 %

58 %

42 %

71 %

18 %

28 %

Nac/Na

99 %

99 %

99 %

99 %

99 %

99 %

Ntc/Nt

67 %

65 %

68 %

65 %

67 %

65 %

Label

B

B

B

B

B

B

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