SIST EN 15316-5:2018

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Energetische Bewertung von Gebäuden - Verfahren zur Berechnung der Energieanforderungen und Nutzungsgrade der Anlagen -Teil 5: Raumheizung und Speichersysteme für erwärmtes Trinkwasser (keine Kühlung), Modul M3-7, M8-7Performance énergétique des bâtiments - Méthode de calcul des besoins énergétiques et des rendements des systèmes - Partie 5 : Systèmes de stockage pour le chauffage et l'eau chaude sanitaire (sans refroidissement), Module M3-7, M8-7Energy performance of buildings - Method for calculation of system energy requirements and system efficiencies - Part 5: Space heating and DHW storage systems (not cooling), Module M3-7, M8-791.140.65Oprema za ogrevanje vodeWater heating equipment91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:EN 15316-5:2017SIST EN 15316-5:2018en,fr,de01-maj-2018SIST EN 15316-5:2018SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15316-5
May
t r s y ICS
{ sä s v rä s râ
{ sä s v rä x w English Version
Energy performance of buildings æ Method for calculation of system energy requirements and system efficiencies æ Performance énergétique des bâtiments æ Méthode de calcul des besoins énergétiques et des rendements des systèmes æ Partie
w ã Systèmes de stockage pour le
Energetische Bewertung von Gebäuden æ Verfahren zur Berechnung der Energieanforderungen und Nutzungsgrade der Anlagen æ Teil
wã Raumheizung und Modul M uæ yá M zæ y This European Standard was approved by CEN on
t y February
t r s yä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w u s xæ wã t r s y ESIST EN 15316-5:2018

Template for input data and choices . 31 A.1 Model information . 31 A.2 Product description data . 31 A.2.1 Storage type . 31 A.2.2 Type of energy use (services) . 31 A.2.3 Storage fuel . 31 A.2.4 CE marking. 32 SIST EN 15316-5:2018

bin, monthly or annual calculation time step . 37 Annex B (informative)
Default Input data . 38 B.1 Model information . 38 B.2 Product description data . 38 B.2.1 Storage type . 38 B.2.2 Type of energy use (services) . 38 B.2.3 Storage fuel . 38 B.2.4 CE marking . 38 B.2.5 Dimension . 38 B.2.6 Energy input/output . 38 B.2.7 Multiple energy input/output . 39 B.2.8 Stand-by thermal losses . 39 B.2.9 Factors for energy recovery . 41 B.3 Design data . 41 B.3.1 Localization . 41 B.3.2 Hydraulic connection . 41 B.3.3 Storage control type . 41 B.3.3.1 Type of control . 41 B.3.3.2 Adaptation of thermal losses for monthly or annual step time . 41 B.4 Operative conditions for method A – hourly calculation time step . 41 B.5 Operative conditions for Method B - bin, monthly or annual calculation time step . 42 SIST EN 15316-5:2018

Selection of methods . 43 C.1 Method A - Model based on a representation of stratified temperature in the storage . 43 C.1.1 Applicability of the stratified model . 43 C.1.2 Selection of the number of volumes to model the storage unit . 43 C.2 Method B - Model based on a representation of an homogenous temperature in the storage ` . 43 Annex D (informative)
Alternative presentation for Method A. 44 D.1 Step 2 - Direct withdrawal of a heat quantity (volume to withdraw) . 44 D.1.1 General . 44 D.1.2 Additional . 46 D.2 Step 3 - Temperature of the storage after volume withdrawal . 46 D.3 Step 6 - indirect heat input and output . 47 D.4 Rearrange temperatures in the storage to a natural state. 49 D.5 Heat exchanger - additional . 50 D.5.1 General . 50 D.5.2 Indirect heat input in the storage, using a solar collector loop. . 50 D.5.3 Indirect heat output from the storage to the space heating service. . 51 Bibliography . 52
Building (as such) Technical Building Systems
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidification
Dehumidification
Domestic
Hot water
Lighting
Building automation
& control
Electricity
production sub1
M1 sub1 M2 sub1
M3 M4 M5 M6 M7 M8 M9 M10 M11 1 General
1 General 1 General 15316-1
15316-1
2 Common terms and definitions; symbols, units and subscripts
2 Building Energy Needs 2 Needs
12831-3
3 Applications
3 (Free) Indoor Conditions without
Systems 3 Maximum Load and Power 12831-1
12831-3
4 Ways to Express Energy Performance
4 Ways to Express Energy Performance 4 Ways to Express Energy Performance 15316-1
15316-1
5 Building Functions and Building Boundaries
5 Heat Transfer by Transmission 5 Emission and control 15316-2 15316-2
6 Building Occupancy and Operating Conditions
6 Heat Transfer by Infiltration and Ventilation 6 Distribution and control 15316-3 15316-3
15316-3
7 Aggregation of Energy Services and Energy Carriers
7 Internal Heat Gains 7 Storage and control 15316-5
15316-5
Building (as such) Technical Building Systems
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidification
Dehumidification
Domestic
Hot water
Lighting
Building automation
& control
Electricity
production sub1
M1 sub1 M2 sub1
M3 M4 M5 M6 M7 M8 M9 M10 M11 8 Building Partitioning
8 Solar Heat Gains 8 Generation
8–1 Combustion boilers 15316-4-1
15316-4-1
8–2 Heat pumps 15316-4-2
15316-4-2
8–3 Thermal solar Photovoltaics 15316-4-3
15316-4-3
15316-4-3
8–4 On-site cogeneration 15316-4-4
15316-4-4
15316-4-4
8–5 District heating and cooling 15316-4-5 15316-4-5
15316-4-5
15316-4-5
8–6 Direct electrical heater 15316-4-9
15316-4-6
8–7 Wind turbines 15316-4-10
15316-4-7
8–8 Radiant heating, stoves 15316-4-8
9 Calculated Energy Performance
9 Building Dynamics (thermal mass) 9 Load dispatching and operating conditions
10 Measured Energy Performance
10 Measured Energy Performance 10 Measured Energy Performance 15378-3
15378-3
11 Inspection
11 Inspection 11 Inspection 15378-1
15378-1
12 Ways to Express Indoor Comfort
12 – 12 BMS
13 External Environment Conditions
14 Economic Calculation 15459-1
NOTE The shaded modules are not applicable. SIST EN 15316-5:2018

Key 1 layer 1 i+1 layer i+1 2 energy input n-1 layer n-1 3 energy input n layer n – number of layers i layer i 4 mixing valve Figure 1 — General model of the storage unit SIST EN 15316-5:2018

Key 1 layer i 2 energy exchange due to thermal conduction with the upper layer 3 energy exchange with ambient – contribution of layer I to thermal losses 4 energy exchange due to thermal conduction with the lower layer i-1 5 energy input into volume i 6 energy exchange due to mass transfer Figure 2 — Energy balance for layer i The energy balance for layer i is calculated by Formula (1): miCp (Ít+1,i- Ít,i) = Qt+1,i +mt .cw,p (Ít,i-1 -Íi) + HTR, i+1.ai (Ít,i+1- Ít,i) - Qsto,ls(i) - HTR, i(Ít,i- Ít,i-1) (1) where Key 1 miCp;w (Ít+1,i- Í,i)
is the variation of the enthalpy of the layer i; Key 5 Qt+1,i: is the energy input to the layer i; Key 6 t .cp (Ít,i-1 -Ít;i) is the variation of enthalpy due to mass transfer with temperature of the underlying layer; Key 2 HTR, i(Í,i- Ít,i-1)
is the energy exchange due to conduction with the lower layer; Key 4 HTR, i+1.ai (Ít,i+1- Ít,i)
is the energy exchange due to conduction with the upper layer; Key 3 Qsto,ls(i)
is the contribution of the layer i to the thermal losses of the storage unit. NOTE HTR is not characterized in the standardized tests and is neglected in the calculation. Consequences for neglecting conduction transfer between layers will result to suppress the thermal interaction between the different volumes used in the method A; these thermal transfers impact the temperatures as the thermal stratification is reduced. The energy balance at the storage level is respected. 6 Calculation of storage systems 6.1 Output data The output data of this method are listed in Tables 3 and 4. SIST EN 15316-5:2018

Energy input for the storage from the generation system (expressed per energy carrier X) QH;sto;X;in Q_H_sto_X_in kWh M3–1 M8–1 Type of energy List List -
Type of energy for back up List List -
Heat losses (recoverable) QH;sto;ls;rbl Q_H_sto_ls_rbl kWh M2–2 Heat losses (non recoverable) QH;sto;ls;nrbl Q_H_sto_ls_nrbl kWh M2–2 Total auxiliary energy WH;sto;aux W_sto_aux kWh M3–1 Operating condition data
Temperature input from generation Ísto;gen;flw=Ísto;gen;flw °C M3–8 Temperature output to generation Ísto;gen;ret=Ísto;gen;ret °C M3–8 Temperature (s) of the volume (s) of the storage unit Ísto;V,i theta_sto_V_i °C M8–7 Temperature at the output of the heat exchanger (return to generation) Ísto;gen;dist;flw,i=Theta_sto_gen_ret °C M3–8 SIST EN 15316-5:2018

Energy input for the storage from the generation system (expressed per energy carrier X) QH;sto;X;in Q_H_sto_X_in kWh M3–1 M8–1 Type of energy List List -
Back-up energy QH;sto;bu;in Q_H_sto_bu_in kWh M3–1 M8–1 Type of energy for back up List List -
Heat losses (recoverable) QH;sto;ls;rbl Q_H_sto_ls_rbl kWh M2–2 Heat losses (non recoverable) QH;sto;ls;nrbl Q_H_sto_ls_nrbl kWh M2–2 Total auxiliary energy WH;sto;aux W_sto_aux kWh M3–1 Operating condition data
Temperature output for DHW ÍW;sto;out theta_W_sto_out °C M8–6 Temperature output for Heating ÍH;sto;out theta_H_sto_out °C M3–6 Energy delivered for Domestic Hot service to the distribution system Qsto;W;out Q_sto_W_out kWh M8–6 Energy delivered for Heating service to the distribution system Qsto;H;out Q_sto_H_out kWh M3–6 Temperature (s) of the volume (s) of the storage unit Ísto;V,i theta_sto_V_i °C M8–7 Temperature at the output of the heat exchanger (return to generation) Ísto;gen;dist;flw,i=Theta_sto_gen_ret °C M3–8 NOTE The difference in the output data between the hourly and the monthly method is due to the fact that the hourly calculation method direction goes from the needs to the primary energy. In order to avoid iteration it is assumed that the storage can always provide the requested output temperature and the requested energy. If at the end of a calculation step the generators cannot provide the requested energy the missing energy is either reported to the next calculation step or the calculation is stopped. In a monthly method, as the calculation steps are independent, it might be possible to calculate e.g. the temperature output due to missing energy provided by the generators for information. Energy output Q sto;H;out and Q sto;W,out are the thermal energies provided by the storage system to the distribution for heating or domestic hot water in the calculation interval. Recoverable heat Q sto;H;ls;rbl is the recoverable heat for heating in the calculation interval. SIST EN 15316-5:2018

A.2.4
Volume total Vsto;tot L - A.2.5 NO Standby losses coefficient Hsto;ls W/K
A.2.8
NO Stand-by losses correction factor fsto;dis;ls - [1–5] A.2.8
NO Type of fuel STO_FUEL List - A.2.3 NO Energy Input (Main)
-
Type of fuel STO_FUEL List - A.2.3 NO Type of control STO_CTRL List
A.3.3.1 NO Set temperature Ísto;set;on °C 0…110 A.4 NO Position in the storage unit i Integer 1-N_vol A.2.6
NO Power Psto;H,i kW
A.2.6
NO Heat exchanger Hsto;H;exh W/K
A.2.6 NO Auxiliary (pump) power Psto;pmp,1 kW
A.2.6 NO Auxiliary mass flow (pump) sto,pmp,i -
A.2.6 NO Energy Input (Back up)
- - NO Type of fuel STO_FUEL_BU List - A.2.3 NO Type of control STO_CTRL_POW_BU List
A.3.3.1
NO Set temperature Ísto;bu,set;on °C 0…110 A.4 NO Position in the storage unit i Integer 1-N_vol
A.2.6 NO Power Psto,H,bu,i kW
A.2.6 NO Heat exchanger Hsto;H;bu;exh W/K
A.2.6 NO Auxiliary (pump) power Psto;bu;pmp,i kW
A.2.6 NO Auxiliary mass flow (pump) sto;bu;pmp,i -
A.2.6 NO Energy output
- - NO Output Direct STO_TYPE_STND List - A.2.1 NO Output: Heat exchanger STO_TYPE_EXH List
A.2.1
Position of the output j Integer 1-N_vol
A.2.6
Heat exchanger Hsto;H;exh;out,j W/K
A.2.6
NO Auxiliary (pump) power Psto;exh;pmp;out,j kW
A.2.6
NO Auxiliary mass flow (pump) sto;exh;pmp;out,j -
A.2.6
NO SIST EN 15316-5:2018
NO Energy use (storage, use for heating /DHW) - List - M3–6 NO Calculation interval tci h 0.8760 M1–9 NO Energy required for heating QH;out;min kWh
M3–6 NO Temperature required for heating ÍH;out;min °C 0…100 M3–6 NO Energy required for domestic hot water QW;out;min kWh
M8–6 NO Temperature required for domestic hot water ÍW;out;min °C 0–100 M8–6 NO (Potential) input from generation QH;sto;X;in kWh
M3–6 YES Temperature input from generation Ísto;gen;flw=°C 0–100 M3–6 NO Temperature output to generation Ísto;gen;ret=°C 0–100 M3–6 NO Ambient temperature Ísto;amb°C 0–100 M1–9 NO Temperature input for DHW (cold water) ÍW;cold=°C 0–100 M8–2 NO Availability of electrical power STO_EL_ON - Y/N M10–7 NO Temperature volume 1 b Ísto;vol,1°C 0–100 Local YES Temperature volume 2 Ísto;vol,2=°C 0–100 Local YES Temperature volume 3 Ísto;vol,3=°C 0–100 Local YES Temperature volume 4 (output to generation) Ísto;vol,4=°C 0–100 Local YES Part of the auxiliary energy transmitted to the medium frvd,aux - [0–1] Local NO Part of the thermal losses transmitted to the room fsto;m - [0–1] Local NO Standby losses adaptation factor fsto;bac;acc - [0–1] Local NO Thermal losses factor for connecting pipes fsto;dis;ls - [1–5] Local NO NOTE In the hourly method the (potential) input from generation, the temperature input from generation; the temperature output to generation are input data. In the monthly method these data are maintained because the model needs to know the potential energy available in order to check if all energy available or only part of it has been used. These data are also used for the calculation of the auxiliary energy as default. The values are recalculated at each intermediate time step for convergence in the solar model. 6.3.6 Constants and physical data Table 10 — Constants and physical data Name Symbol Unit Value Water specific heat Cp;w Wh/(kg·K) 1,16 SIST EN 15316-5:2018

(2) where QH;sto;X;in [kWh] is the heat from the collector loop accepted by the storage module. In the case of a solar collector ‘gen’ is equal to ‘sol’ (EN 15316-4-3). 6.4.3.2 Step 0 Initialization For initial conditions all temperatures in the thermal storage unit(s) are equal to the set point temperature. SIST EN 15316-5:2018

(3) Energy stored for heating service. For ϑϑ>,istoH (Φρϑϑ==×××−∑_;;,;,;;1NBvolstoHwpwstoistovoliHoutminiQCV (4) 6.4.3.4 Step 2 Volume to be withdrawn from the storage (domestic hot water service) The calculation of the volume to be withdrawn is made accordingly with the energy to be delivered to the distribution system with a threshold value for the minimum available temperature according to the scenarios for domestic hot water. The priority between service for domestic hot water and heating service is made accordingly with information provided by the control system. NOTE In the following, priority is given to domestic hot water when double service is required. The volume of water withdrawn is based on the contribution of the homogen
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