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Title (english): Energy efficiency of buildings - Calculation of the net, final and primary energy demand for heating, cooling, ventilation, domestic hot water and lighting - Part 8: Net and final energy demand of domestic hot water systems

Document type: Pre-standard

Publication date: 2011-12

Overview:

DIN V 18599-8 provides a method for calculations relating to the domestic hot water system of buildings. Within the framework of DIN V 18599-8, the energy use of domestic hot water systems with their subsystems (transmission, distribution, storage and generation) is described. For this purpose, both the thermal losses and the auxiliary energy of the individual subsystems are determined and, provided these occur within the heated zone, are made available for the ensuing calculations described in DIN V 18599-1 and DIN V 18599-2. Information is given on the possible influence of space heating (see DIN V 18599-5). Other systems, such as ventilation of residential buildings (see DIN V 18599-6) that can make demands on or supply certain subsystems, can accordingly be taken into account and calculated. DIN V 18599-1 acts as the link between the parts. It is also possible to calculate the energy balances of several building zones in which there are several units to be balanced. The energy need values calculated using this procedure cannot be used to size individual components. Systems not covered by this document shall be assessed by analogy with DIN V 18599-8 and using other, physically-based algorithms. DIN V 18599-8 has been approved by NA 005-56-20 GA "Gemeinschaftsarbeitsausschuss NABau/FNL/NHRS: Energetische Bewertung von Gebäuden" ("Joint Working Committee NABau/FNL/NHRS: Energy performance of buildings") and published as a prestandard.

Language: German

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