energy assessment / audit

All CEN standards (EN or EN-ISO) and draft standards (prEN or prEN-DIS) can be ordered from the National Standards Body organisation (NSB) (see www.cen.eu). All EPBD CEN standards were published in 2007 or 2008, as EN or EN-ISO standards. The total set contains 2000 pages. As usual, EN’s are published in English and, by choice of DIN and AFNOR, also published in a German or French version. It is up to the other NSB’s to decide if national language versions will be produced, depending on the target group as explained under the question: "Are CEN standards only available in English...
Post date: 1 May 2009
Type: Ask the Experts

CEN is the European Association of national standardisation institutes, the so called National Standards Bodies (NSB’s). These NSB’s are responsible for the contact with the interested market parties and experts preparing the CEN standards in the same way they do when preparing national standards. Members of CEN-Technical Committees (CEN-TC’s) are nominated by the NSB’s. The TC’s decide on the scope and content of a standard. The actual work is done in smaller CEN-TC-Working Groups whose expert members are nominated by NSB’s.
Post date: 1 May 2009
Type: Ask the Experts

There are several reasons why there is not just one CEN standard covering all EPBD aspects. The two main reasons are: 1. The CEN standards cover different types, with different application areas and different target groups, ranging from building designers and inspectors to specific specialists on building physics or systems (lighting, ventilation, cooling, heating, hot water, ..).
Post date: 29 Apr 2009
Type: Ask the Experts

The set of CEN-EPBD standards consists of 43 titles or parts and can be grouped as follows: The building physics standards, e.g. describing the calculation of heat transfer by transmission and ventilation, load and summer temperature, solar transmittance and the calculation of the energy need for heating and cooling of the building. In the second group there are standards on the description and properties (classification) of ventilation systems plus cooling and air conditioning systems.
Post date: 29 Apr 2009
Type: Ask the Experts

CEN/TR 15615 is not a standard, but a technical report and therefore the definitions (annex C) are not mandatory. However, most of the definitions are adopted also in the European standard EN 15603, which is one of the key standards in the set of standards to support the EPBD. It is intended that the annexes C and D of CEN/TR 15615 will form the basis of a future trilingual standard covering common definitions and symbols for energy calculations. Most Member States are planning to adopt the CEN standards in one way or another within a few years.
Post date: 29 Apr 2009
Type: Ask the Experts

To support the open EU market, more and more standards have been prepared as ENӳ. For building products this is even a requirement based on EU mandates to CEN according to the EU-CPD (Construction Product Directive). To stimulate an open EU market, construction products shall only be specified according to mandatory, socalled ԨarmonisedԠEN (or EN-ISO) standards.
Post date: 29 Apr 2009
Type: Ask the Experts

We expect a further harmonization in the near future. In particular when feedback from the Member States and other target groups has lead to recommendations for improvement of the CEN standards and when these recommendations have been implemented in updated versions of the standards in a few years from now. The IEE CENSE project (www.iee-cense.eu) may play an important role in identifying and removing the barriers and to promote examples of good practice.
Post date: 29 Apr 2009
Type: Ask the Experts

In general questions on standards could be answered by the National Standard Body helpdesk. They may also refer you to their national experts who have been involved in the preparation of the standard on a national or international level.
Post date: 29 Apr 2009
Type: Ask the Experts

It may be that although the National Standard Body produced a national language version, the standard will always be available in English (the official text), in many cases also a French and German version may be available. The French language versions can be ordered from AFNOR and other CEN countries where French is the official language, the same for the German versions, they can be ordered from DIN, ON, etc.. Question submitted by: Dick van Dijk (TNO, The Netherlands) Anwered by: Dick van Dijk, TNO (The Netherlands) Date: 29/04/2009
Post date: 29 Apr 2009
Type: Ask the Experts

For instance: in EN ISO 13789 the subscripts for transmission and ventilation are T and V in ISO and tr and ve in CEN. There may be two reasons: 1) because the EN ISO standard was already published before the common symbols were agreed upon in CEN (which was in 2007); 2) because the ISO standard is closely linked to other ISO standards which use different symbols. Question submitted by: Dick van Dijk (TNO, The Netherlands) Anwered by: Dick van Dijk, TNO and Jaap Hogeling, ISSO (The Netherlands) Date: 29/04/2009
Post date: 29 Apr 2009
Type: Ask the Experts