EN 15316-5-2017 pdf download

08-11-2021 comment

EN 15316-5-2017 pdf download.Energy performance of buildings – Method for calculation of system energy requirements and system efficiencies -Part 5: Space heating and DFIW storage systems (not cooling), Module M3-7. M8-7.
EN 153 16-1, Energy performance of buildings – Method for calculation of system energy requirements and system efficiencies – Part 1: General and Energy performance expression, Module M3-1, M34, M3-9, MB-i, M8-4
EN 153 16-3, Energy performance of buildings – Method for calculation of system energy requirements and system efficiencies – Part 3: Space distribution systems (DHW. heating and cooling), Module M3-6, M4-6, M8-6
EN ISO 7345:1995, Thermal insulation – Physical quantities and definitions (ISO 7345:1987)
EN ISO 52000-1:2017, Energy performance of buildings – Overarching EPB assessment – Part 1: General framework and procedures (ISO 52000-1:2017)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 7345:1995 and EN ISO 52000-1:2017 and the following apply.
3.1
electric storage water heater
ESWH
storage water heater powered with electricity and used [or domestic hot water energy use
3.2
double service storage water heater
DSWH
storage water heater used for both heating and domestic hot water energy use
3.3
heat exchanger storage water heater
HESWH
storage water heater using internal heat exchanger to store the energy provided by an external generation system (solar, boiler, heat pump,…)
3.4
multi energy storage water heater
MESWH
storage water heater using different energy sources to store the energy
3.5
thermodynamic storage water heater
TSWH
storage water heater using attached heat pump system to produce and store hot water
5 Description of the methods
5.1 Output of the method
This method covers the calculation of energy delivered to the storage system, energy delivered from the storage systems to the domestic and hot water distribution system, auxiliary energy and thermal losses (recoverable or not) of storage systems used for heating and/or domestic hot water.
The time step of the output can be:
— hourly;
— bin;
— yearly;
— monthly.
according to the scenarios used to determine the thermal load.
5.2 Extension of the method
The method which is presented in the standard can be extended to storage systems with multiple storage units.
The adaptation depends of the hydraulic schema used for the design of the storage system:
— serial mounting — the storage units are hydraulically linked as the output of the storage unit ‘n’ become the input of the storage unit ‘n+l’. The equations as identical as the calculation procedure will consider a loop for all storage unit to calculate the total energy stored, the energy used and delivered and the corresponding volume of hot water delivered to the system;
— parallel mounting – the regulation systems sets the priority for the storage units that are considered independently.
6.2 Calculation time steps
The methods described in Clause 6 are suitable for the following calculation time steps:
yearly (Method B for single volume model);
— monthly (Method B for single volume model);
— bin (Method B for single volume model);
— hourly (Method A or Method B).
Annex C gives precise guidance for selection of the method for the hourly time-step.
For these methods, the output time step is the same as the input time-step.
This method does not take into account any dynamic effect.
If the Input data are available with a shorter time step than the output,
— the sum is taken for extensive properties like energy;
— the time averaged value is taken for intensive properties like temperature.
6.3 Input data
6.3.1 Source of data
The input data corresponding to the physical characteristic (volume, type of energy input, power of the unit(s), and characterization of the heat exchanger) of the storage unit are obtained from the description of the manufacturer.
The expression of the standby losses Is expressed commonly in this standard in W/K. This information is derived from the results of the standby obtained in the different product standards. Annex A (A.2.7) gives provision to calculate the corresponding value in W/K according with the different type of storage.
6.3.2 Product data
6.3.2.1 Product description data (qualitative)
The product description data of storage unit are described in Table 5:EN 15316-5-2017 pdf download.

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