UNE-EN ISO 52016-1:2017

This International Standard gives calculation methods for the assessment of:

a)the energy need for heating and cooling, based on hourly or monthly calculations;

b)the internal temperature, based on hourly calculations;

c)the heating and cooling load, based on hourly calculations.

NOTE 1Heating or cooling load calculated on the basis of steady state characteristics is not covered.

The calculation methods can be used for residential or non-residential buildings, or a part of it, referred to as the building .

This International Standard has been developed for buildings that are, or are assumed to be, heated and/or cooled for the thermal comfort of people, but can be used for other types of building or other types of use (e.g. industrial, agricultural, swimming pool), as long as appropriate input data are chosen and the impact of special physical conditions on the accuracy is taken into consideration.

NOTE 2For instance, it can be used when a special model is needed but is missing.

Depending on the purpose of the calculation, it may be decided nationally to provide specific calculation rules for spaces that are dominated by process heat (e.g. indoor swimming pool, computer/server room or kitchen in a restaurant).

NOTE 3For instance, in the case of a building energy certificate and/or building permit, e.g. by ignoring the process heat or using default process heat for certain processes (e.g. shops: freezers, lighting in shop window).

Special attention has been given to the suitability of this International Standard for use within the context of national or regional building regulations. This includes the calculation of an energy performance rating of a building, on the basis of standardized conditions, for an energy performance certificate. The result can have legal implications, in particular when it is used to judge compliance with minimum energy performance levels, which can, for instance, be required to obtain a building permit. For such applications, it is important that the calculation procedures be unambiguous, repeatable and verifiable. A special situation is the calculation of the energy performance in the case of old existing buildings, if gathering the full required input would be too labour-intensive for the purpose, relative to the cost-effectiveness of gathering the input. In this case, it is important that the calculation procedures provide the right balance between accuracy and data collection costs. To accommodate the application for these and other situations, this International Standard offers different choices. It is up to national bodies whether or not to choose a specific option for mandatory use, e.g. depending on the region in the country, the type of building and its use, and on the purpose of the assessment.

This International Standard is applicable to buildings at the design stage, to new buildings after construction and to existing buildings in the use phase.

The input data directly or indirectly called for by this International Standard should be available from the building files or the building itself. If this is not the case, it is explicitly stated at relevant places in this International Standard that it may be decided at national level to allow for other sources of information. In this case, the user reports which input data have been used and from which source. Normally, for the assessment of the energy performance for an energy performance certificate, a protocol is defined at national or regional level to specify the type of sources of information and the conditions when they may be applied instead of the full required input.