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guest rooms, kitchen, restaurant, gymnasium, conference hall, swimming pool, etc. in the case of a fitness centre).

MSz-EN standards (CEN standards adopted in Hungary), have been in force since 2005 and some working documents of CEN, available in 2005 have been considered, nevertheless no direct references are included in the regulation in order to provide a “stable situation”. According to the EPBD, the national regulation will be reviewed every five years, and modified if necessary, according to the new standards, but within the five year period changes should be avoided. Moreover it must not be forgotten that the scale of a design, submitted for a building permit, does not take into account constructional details or possible changes in the final design and during construction, thus simplified calculation is not only rational but inevitable.

Software tools were developed on a commercial basis in 2005 (see the paragraph on certification and –in Hungarian - www.bausoft.hu).

For residential buildings the popular ARCHICAD software has added special modules facilitating the export of the necessary data directly from the graphical design and to carry out all calculations (building elements, building as a whole and building and service systems together). Free download is available for residential buildings. The modules have been developed in close cooperation with the team responsible for the development of the new regulation.

Nevertheless the calculation can be performed manually – worked examples are available in the printed design guide and on the home page

(www.egt.bme.hu).

The use of more advanced and well proven software tools, such as ESPr, TRYNSIS or Energy+ is acceptable and, for mixed use air conditioned buildings, advisable.

Requirements for new buildings and major renovations

The new requirements are mandatory for building permits requested after 1 September 2006. Building permit must be issued for new buildings as well as for major renovation. The 1000 m2 rule has been recently applied. The main concept of the requirement is the separation of the components of energy usage into distinct categories: components, depending mainly on the building and those, depending mainly on the users.

Building element Exposed wall Attic floor slab

Flat roof Heated attic

Floor slab over arcade Floor slab over basement

Non openable glazing

v

Toplit

Entrance gate Door

Partition wall heated- unheated

Partition wall heated- heated

U

W/m2 0,45 0,25 0,30 0,25 0,25 0,50

Window, non metal frame 1,60 Window, metal frame

2,00 1,50

2,50 3,00 1,80 0,50

1,50 K

Although the distinction cannot be “absolute” it is intended that – at prescribed indoor temperature and climatic conditions – the net heating energy need to cover the transmission losses depends on the thermal envelope of the building whilst e.g. the net energy will cover the domestic hot water consumption related to the users. According to this concept the requirement has three different levels: the building and its service systems must comply with all of them. The levels are the followings:

> Building elements > Building

> Building and service system together

The proof of compliance must be made in two stages: firstly when requesting the building permit and secondly after completion of the building.

Regarding the building elements the U values of the wall, flat roof, attic floor slab, window, entrance gate, etc. are limited (see a sample in the

EPBD Buildings Platform > P070_EN_Hungary-March 2008

Page 100

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