DIN EN 15316-2-3-2007 建筑物的供熱系統.系統能量要求和系統功效的計算方法.第2-3部分:對流式供暖分配系統
Heating systems in buildings - Method for calculation of system energy requirements and system efficiencies - Part 2-3: Space heating distribution systems; German version EN 15316-2-3:2007
This European Standard provides a methodology to calculate/estimate the system thermal loss of water based
distribution systems for heating and the auxiliary energy demand, as well as the recoverable part of each. The
actual recovered energy depends on the gain to loss ratio. Different levels of accuracy, corresponding to the
needs of the user and the input data available at each design stage of the project, are provided in this
European Standard by different calculation methods, i.e. a detailed calculation method, a simplified calculation
method and a method based on tabulated values. The general method of calculation can be applied for any
time-step (hour, day, month or year).
Pipework lengths for the heating of decentralised, non-domestic ventilation systems equipment are to be
calculated in the same way as for water based heating systems. For centralised, non-domestic ventilation
systems equipment, the length is to be specified in accordance with its location.
NOTE It is possible to calculate the system thermal loss and auxiliary energy demand for cooling systems with the
same calculation methods as shown in this European Standard. Specifically, determination of auxiliary energy demand is
based on the same assumptions for efficiency of pumps, because the efficiency curve applied is an approximation for
inline and external motors. It needs to be decided by the standardisation group of CEN, whether or not the extension for
cooling systems should be made in this European Standard. This is also valid for distribution systems in HVAC (in ducts)
and also for special liquids.