UNE-CEN/TR 15316-6-8
Energy performance of buildings - Method for calculation of system energy requirements and system efficiencies - Part 6-8: Explanation and justification of EN 15316-4-5 (District heating and cooling), Module M3-8-5, M4-8-5, M8-8-5, M11-8-5 (Endorsed by Asociación Española de Normalización in June of 2017.)