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During the process of design and/or execution of the construction control is the responsibility of the consultant. A permit for the construction process is issued after the evaluation of the consultant for compliance with the legal requirements, including energy efficiency, or by one of the Municipality expert Councils for small one family houses, low level constructions, etc.

Requirements for existing buildings

Also on 1 March 2005, the Minister of Regional Development and Public Works adopted the minimum requirements for existing buildings – building renovation, extensions and repairs. › Main criteria for energy and heat saving expenses for residential and non-residential buildings with standard internal temperature of 19°C and for non-residential low temperature buildings is the heat conductivity coefficient through the building enclosure constructions and elements.

› The heat conductivity coefficient values should not exceed the values in Table 4, when:

A public building in the town of Kozloduy with category “A” certificate.

2. the heating volume is increased with more than 30 m3.

1.the area being reconstructed/renovated/repaired or reorganized exceeds 25% of the original building enclosure, construction and elements;

Table 4. Maximum values of the heat conductivity coefficient.

U, W/(m2K) №

Type of building wall constructions and elements

1. 2. 3.

4. 5.

External wall, for which : а) the thermal insulation is from inside or at the middle of the wall; b) the thermal insulation is from outside

External windows, balcony doors and roof windows glazing (glazed packages) Suspended facades

External windows, balcony doors and roof windows with raised requirements Suspended facades with raised requirements

Pitched roofs and ventilated flat roofs. Flat roofs without a layer

Floors and walls, bordering on non heated areas or with land, at which: а) the thermal insulation is outside b) the thermal insulation is inside

Energy passports and certification of buildings

A public building in the city of Plovdiv with category “B” certificate.

Energy consumption classes from А to G are established by comparison of the integrated energy performance value with the scale of energy consumption.

The energy consumption classes’ scale is composed on the basis of two values of the integrated energy performance characteristic: ЕР max, r and ЕР max, s, determined as primary energy or as consumed (submitted) energy, or CO2 emissions saved as it is: 1. ЕРmax,r – Total specific energy expenses for heating, cooling , ventilation,

EPBD Buildings Platform > P076_EN_Bulgaria-March2008

Page 39

For buildings with standard internal

temperature 19°С

0, 45 0,35

2,0 1,8 1,9

2,2 2,3

0,30 0,25

0,40 0,50

0,75 0,75

2,8 -

3,0

2,8 3,0

0,40 0,40

- -

For low

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