B-21 Operational energy demand for new buildings – Consideration of user behaviour

Aspect B-21 Operational energy demand for new buildings – Consideration of user behaviour
Description
Several parameters influence the results of the energy calculation demand at the operational stage of buildings. Among others, user behaviour may have a major significance on the energy needs. The following section aims at providing guidance for screening, simplified and complete LCA of new buildings.

related study objective

stand-alone LCA comparative assertion

related study phase

goal and scope definition inventory analysis (LCI) impact assessment (LCIA) interpretation reporting

relevant for

new buildings existing buildings construction products screening LCA simplified LCA complete LCA
Provisions For stand-alone LCA, scenarios may reflect statistical, conventional or specific user behaviour.For comparative assertions, behaviour scenarios for the calculation of energy use should be identical for each alternative. Any deviation between scenarios should be reported and justified.
Rules from:
EN 15978:
8.6.5 Scenarios for operational energy use – Module B6
Guidance
For stand-alone LCA, sensitivity analysis should be carried out in order to estimate the significance of the use of a specific scenario instead of a conventional one.

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