UNI EN 15316-3-1_2008

NORMAEUROPEA

Pagina IUNI EN 15316-3-1:2008

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UNI EN 15316-3-1

MAGGIO 2008

Impianti di riscaldamento degli edificiMetodo per il calcolo dei requisiti energetici e dei rendimenti dellimpiantoParte 3-1: Impianti per la produzione di acqua calda sanitaria, caratterizzazione dei fabbisogni (fabbisogni di erogazione)

Heating systems in buildingsMethod for calculation of system energy requirements and system efficienciesPart 3-1: Domestic hot water systems, characterisation of needs (tapping requirements)

La norma fa parte di una serie di norme sul metodo di calcolo deirequisiti energetici e dei rendimenti dellimpianto di riscaldamentodegli edifici.La norma ha lo scopo di fornire i metodi di calcolo per determinareil fabbisogno energetico per la produzione di acqua calda sanitaria.La norma tratta dei fabbisogni di acqua calda sanitaria negli edifici.Il calcolo dei fabbisogni di energia per la produzione di acqua caldasanitaria si applica ad un edificio o a parte di esso.

TESTO INGLESE

La presente norma la versione ufficiale in lingua inglese dellanorma europea EN 15316-3-1 (edizione ottobre 2007).

ICS 91.140.10

L icenza d 'uso concessa a UNIVERSITA ' CENTRO ATENEO DOC.POLO MONTE DAGO per l ' abbonamento anno 2008 .L i cenza d 'uso in te rno su pos taz i one s ingo la . R ip roduz i one v ie ta ta . E ' p ro ib i to qua l s ias i u t i l izzo in re te (LAN, in te rne t , e tc . . . )

UNI Pagina IIUNI EN 15316-3-1:2008

Le norme UNI sono elaborate cercando di tenere conto dei punti di vista di tutte le partiinteressate e di conciliare ogni aspetto conflittuale, per rappresentare il reale statodellarte della materia ed il necessario grado di consenso.Chiunque ritenesse, a seguito dellapplicazione di questa norma, di poter fornire sug-gerimenti per un suo miglioramento o per un suo adeguamento ad uno stato dellartein evoluzione pregato di inviare i propri contributi allUNI, Ente Nazionale Italiano diUnificazione, che li terr in considerazione per leventuale revisione della norma stessa.

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PREMESSA NAZIONALELa presente norma costituisce il recepimento, in lingua inglese, del-la norma europea EN 15316-3-1 (edizione ottobre 2007), che assu-me cos lo status di norma nazionale italiana.

La presente norma stata elaborata sotto la competenza dellentefederato allUNICTI - Comitato Termotecnico Italiano

La presente norma stata ratificata dal Presidente dellUNI ed entrata a far parte del corpo normativo nazionale il 22 maggio 2008.


EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORM

EN 15316-3-1

October 2007

ICS 91.140.10

English Version

Heating systems in buildings - Method for calculation of systemenergy requirements and system efficiencies - Part 3-1:

Domestic hot water systems, characterisation of needs (tappingrequirements)

Systmes de chauffage dans les btiments - Mthode decalcul des besoins nergtiques et des rendements dessystmes - Partie 3-1 : Systmes de production d'eau

chaude sanitaire, caractrisation des besoins (exigencesrelatives au puisage)

Heizungsanlagen in Gebuden - Verfahren zur Berechnungder Energieanforderungen und Nutzungsgrade der Anlagen- Teil 3-1: Trinkwassererwrmung, Charakterisierung des

Bedarfs (Zapfprogramm)

This European Standard was approved by CEN on 18 August 2007.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATIONC O M I T E U R O P E N D E N O R M A LI S A T I O NEUR OP IS C HES KOM ITEE FR NOR M UNG

Management Centre: rue de Stassart, 36 B-1050 Brussels

2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.

Ref. No. EN 15316-3-1:2007: E

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Contents Page

Foreword..............................................................................................................................................................3Introduction .........................................................................................................................................................51 Scope ......................................................................................................................................................62 Normative references ............................................................................................................................63 Terms and definitions ...........................................................................................................................64 Symbols, units and indices ..................................................................................................................95 Methods for calculation of energy needs for domestic hot water for different installations ........95.1 General....................................................................................................................................................95.2 Energy needs for domestic hot water based on tapping programs.................................................95.3 Energy needs for domestic hot water based on required volume .................................................105.3.1 General..................................................................................................................................................105.3.2 Domestic hot water delivery temperature .........................................................................................105.3.3 Cold water supply temperature ..........................................................................................................105.3.4 Domestic hot water volume ................................................................................................................105.3.5 Time periods.........................................................................................................................................115.4 Energy needs for domestic hot water based directly on floor area ...............................................125.5 Tabulated energy needs for domestic hot water..............................................................................12Annex A (informative) Tapping programs for single family dwellings ........................................................13Annex B (informative) Informative values for calculation of the energy needs for domestic hot

water in buildings ................................................................................................................................17B.1 Tabulated values..................................................................................................................................17B.2 Default values for single family dwellings ........................................................................................18Bibliography ......................................................................................................................................................19

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Foreword

This document (EN 15316-3-1:2007) has been prepared by Technical Committee CEN/TC 228 Heating systems in buildings, the secretariat of which is held by DS.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2008, and conflicting national standards shall be withdrawn at the latest by April 2008.

This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association (Mandate M/343), and supports essential requirements of EU Directive 2002/91/EC on the energy performance of buildings (EPBD). It forms part of a series of standards aimed at European harmonisation of the methodology for calculation of the energy performance of buildings. An overview of the whole set of standards is given in prCEN/TR 15615.'

The subjects covered by CEN/TC 228 are the following:

design of heating systems (water based, electrical etc.);

installation of heating systems;

commissioning of heating systems;

instructions for operation, maintenance and use of heating systems;

methods for calculation of the design heat loss and heat loads;

methods for calculation of the energy performance of heating systems.

Heating systems also include the effect of attached systems such as hot water production systems.

All these standards are systems standards, i.e. they are based on requirements addressed to the system as a whole and not dealing with requirements to the products within the system.

Where possible, reference is made to other European or International Standards, a.o. product standards. However, use of products complying with relevant product standards is no guarantee of compliance with the system requirements.

The requirements are mainly expressed as functional requirements, i.e. requirements dealing with the function of the system and not specifying shape, material, dimensions or the like.

The guidelines describe ways to meet the requirements, but other ways to fulfil the functional requirements might be used if fulfilment can be proved.

Heating systems differ among the member countries due to climate, traditions and national regulations. In some cases requirements are given as classes so national or individual needs may be accommodated.

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In cases where the standards contradict with national regulations, the latter should be followed.

EN 15316 Heating systems in buildings Method for calculation of system energy requirements and system efficiencies consists of the following parts:

Part 1: General

Part 2-1: Space heating emission systems

Part 2-3: Space heating distribution systems

Part 3-1: Domestic hot water systems, characterisation of needs (tapping requirements)

Part 3-2: Domestic hot water systems, distribution

Part 3-3: Domestic hot water systems, generation

Part 4-1: Space heating generation systems, combustion systems (boilers)

Part 4-2: Space heating generation systems, heat pump systems

Part 4-3: Heat generation systems, thermal solar systems

Part 4-4: Heat generation systems, building-integrated cogeneration systems

Part 4-5: Space heating generation systems, the performance and quality of district heating and large volume systems

Part 4-6: Heat generation systems, photovoltaic systems

Part 4-7: Space heating generation systems, biomass combustion systems

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

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Introduction

This European Standard is one of a number of standards that together describe methods for calculation of system energy requirements and system efficiencies related to domestic hot water systems. In particular this European Standard describes methods for calculation of the energy needs for domestic hot water.

The user needs to refer to other European Standards or to national documents for input data and detailed calculation procedures not provided by this European Standard.

Only the calculation methods are normative. Values necessary to complete the calculations should be given in a national annex. Informative values are given in informative Annex A.

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1 Scope

This European Standard is part of a set of standards covering methods for calculation of system energy requirements and system efficiencies of heating systems in buildings. In particular this European Standard is one of a number of standards dealing with domestic hot water systems.

The scope of this specific part is to standardise the methods for determining the energy needs for domestic hot water. This European Standard covers the domestic hot water needs in buildings.

The calculation of the energy needs for domestic hot water applies to a dwelling, a building or a zone of a building.

In order to be coherent with calculation methods for space heating systems, emission losses representing taps and control should be taken into account.

2 Normative references

Not applicable.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1auxiliary energy electrical energy used by technical building systems for heating, cooling, ventilation and/or domestic hot water to support energy transformation to satisfy energy needs

NOTE 1 This includes energy for fans, pumps, electronics etc. Electrical energy input to a ventilation system for air transport and heat recovery is not considered as auxiliary energy, but as energy use for ventilation.

NOTE 2 In EN ISO 9488, the energy used for pumps and valves is called "parasitic energy".

3.2buildingconstruction as a whole, including its envelope and all technical building systems, for which energy is used to condition the indoor climate, to provide domestic hot water and illumination and other services related to the use of the building

NOTE The term can refer to the building as a whole or to parts thereof that have been designed or altered to be used separately.

3.3building services services provided by technical building systems and by appliances to provide indoor climate conditions, domestic hot water, illumination levels and other services related to the use of the building

3.4calculated energy rating energy rating based on calculations of the weighted delivered and exported energy of a building for heating, cooling, ventilation, domestic hot water and lighting

NOTE National bodies decide whether other energy uses resulting from occupants' activities such as cooking, production, laundering etc. are included or not. If included, standard input data shall be provided for the various types of building and uses. Lighting is always included except (by decision of national bodies) for residential buildings.

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3.5calculation period period of time over which the calculation is performed

NOTE The calculation period can be divided into a number of calculation steps.

3.6cold water supply temperature water temperature of the cold water distribution network

3.7domestic hot water heating process of heat supply to raise the temperature of the cold water to the intended delivery temperature

3.8domestic hot water delivery temperature temperature of the domestic hot water at the delivery point

3.9energy need for domestic hot water heat to be delivered to the needed amount of domestic hot water to raise its temperature from the cold network temperature to the prefixed delivery temperature at the delivery point, not taking into account the technical building thermal systems

3.10energy use for space heating or cooling or domestic hot water energy input to the space heating or cooling system or the domestic hot water system to satisfy the energy need for space heating or cooling (including dehumidification) or domestic hot water, respectively

NOTE If the technical building system serves several purposes (e.g. space heating and domestic hot water), it can be difficult to split the energy use into that used for each purpose. It can be indicated as a combined quantity (e.g. energy need for space heating and domestic hot water).

3.11energy performance of a building calculated or measured amount of energy delivered and exported actually used or estimated to meet the different needs associated with a standardised use of the building, which may include, inter alia, energy used for heating, cooling, ventilation, domestic hot water and lighting

3.12energy rating evaluation of the energy performance of a building based on the weighted sum of the calculated or measured use of energy carriers

3.13heating or cooling season period of the year during which a significant amount of energy for heating or cooling is needed

NOTE The season lengths are used to determine the operation period of technical systems.

3.14heat recovery heat generated by a technical building system or linked to a building use (e.g. domestic hot water) which is utilised directly in the related system to lower the heat input and which would otherwise be wasted (e.g. preheating of the combustion air by flue gas heat exchanger)

3.15power shower shower having an associated pump to increase the water flow rate and pressure

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3.16recoverable system thermal loss part of a system thermal loss which can be recovered to lower either the energy need for heating or cooling or the energy use of the heating or cooling system

NOTE This depends on the calculation approach chosen to calculate the recovered gains and losses (holistic or simplified approach).

3.17recovered system thermal loss part of the recoverable system thermal loss which has been recovered to lower either the energy need for heating or cooling or the energy use of the heating or cooling system

3.18system boundary boundary that includes within it all areas associated with the building (both inside and outside the building) where energy is consumed or produced

NOTE Inside the system boundary, the system losses are taken into account explicitly, outside the system boundary they are taken into account by the conversion factor.

3.19system thermal loss thermal loss from a technical building system for heating, cooling, domestic hot water, humidification, dehumidification, or ventilation or lighting that does not contribute to the useful output of the system

NOTE 1 A system loss can become an internal heat gain for the building, if it is recoverable.

NOTE 2 Thermal energy recovered directly in the subsystem is not considered as a system thermal loss but as heat recovery and directly treated in the related system standard.

NOTE 3 Heat dissipated by the lighting system or by other services (e.g. appliances of computer equipment) is not part of the system thermal losses, but part of the internal heat gains.

3.20tapping program 24-hour cycle that defines a number of domestic hot water draw-off requirements: succession of energy needs corresponding to uses of domestic hot water during a day

3.21technical building system technical equipment for heating, cooling, ventilation, domestic hot water, lighting and electricity production composed by sub-systems

NOTE 1 A technical building system can refer to one or to several building services (e.g. heating system, space heating and domestic hot water system).

NOTE 2 Electricity production can include cogeneration and photovoltaic systems.

3.22technical building sub-system part of a technical building system that performs a specific function (e.g. heat generation, heat distribution, heat emission)

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4 Symbols, units and indices

For the purposes of this document, the following symbols and units (Table 1) and indices (Table 2) apply:

Table 1 Symbols and units

Symbol Name of quantity Unit

A area m2

C specific heat capacity J/(kg K) f conversion factor -

N number of operating times -

Q quantity of heat, energy J V volume m3

x, y, z constants - efficiency - celsius temperature C

Table 2 Indices

0 reference, cold water A floor day daily

del delivered f per unit (to be multiplied by f)

nday number of days

W domestic hot water

5 Methods for calculation of energy needs for domestic hot water for different installations

5.1 General

Four methods for calculation of the energy needs for the delivered domestic hot water are described. The methods differ as to the level of detail assumed for the domestic hot water demand; for example whether the conditions relating to the different uses of the domestic hot water are taken into account.

A national annex may specify which method should be used for different building types. A national annex may also specify which method is applicable for the purpose of energy labelling or any other specific use.

The calculations are based on a daily domestic hot water requirement.

5.2 Energy needs for domestic hot water based on tapping programs

This method is characterised by the use of one or more 24-hour cycles that define a number of domestic hot water draw-off requirements.

Tapping programs may be given in a national annex and shall identify the building type(s) for which they can be used. The tapping programs shall include the energy content of each draw-off, the corresponding delivery temperature and the appropriate flow rate.

For single-family dwellings, the tapping programs detailed in EN 13203-2 should be used. These are given in Annex A. Reference should be made to EN 13203-2 for a full explanation of these tapping programs.

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NOTE For this application, units are MJ/day, i.e. tapping program 1: 2 100 kWh/day ~ 7 560 MJ/day, tapping program 2: 5 845 kWh/day ~ 21 042 MJ/day, and tapping program 3: 11 655 kWh/day ~ 41 958 MJ/day.

The weekly, monthly or annual energy needs for domestic hot water are obtained by multiplying the energy needs per day by the appropriate number of days. A national annex may indicate that a combination of tapping programs may be used for these calculations.

5.3 Energy needs for domestic hot water based on required volume

5.3.1 General

This method is characterised by calculation of the required daily volume of domestic hot water.

The energy need for the domestic hot water delivered to the user WQ depends on the volume delivered and the water temperatures. The energy need is calculated by:

)(182.4 0,,, WdelWdayWW VQ = (MJ/day) (1)

where

dayWV , volume of domestic hot water delivered per day at specified temperatures, m3/day;

delW , specified domestic hot water delivery temperature, C;

0,W cold water supply temperature, C.

5.3.2 Domestic hot water delivery temperature

The required domestic hot water delivery temperature depends on the use. In order to achieve a consistent basis for the calculations, values can be provided in a national annex. In the absence of a national annex, a default delivery temperature as given in Annex B may be applied.

5.3.3 Cold water supply temperature

In some countries, variations in cold water supply temperature are sufficient to have a significant affect on the energy requirement for domestic hot water. National values can be applied to take local variations into account, and more than one set of temperature values can be applied to reflect differences in cold water supply temperature in different geographical areas.

National values should be provided in a national annex.

In the absence of a national annex, a default cold water supply temperature as given in Annex B may be applied.

5.3.4 Domestic hot water volume

5.3.4.1 General

The volume of domestic hot water, dayWV , , is determined by the type of building and its use, and is calculated by:

1000,,

,

fVV dayfWdayW

= (m3/day) (2)

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where

dayfWV ,, litres per unit per day of domestic hot water at delW , ;

f number of units to be taken into account.

The values of dayfWV ,, and f depend on:

type of building;

type of activity carried out within the building;

use of a zone within a building, where more than one activity is carried out;

standard or class of activity, such as the category of a hotel (number of stars) or the class of catering establishment.

Alternatively, the floor area may be used for factor f in Equation (2) with corresponding values of dayfWV ,, .

National values for dayfWV ,, and factor f should be provided in a national annex. If a national annex is not provided or does not include these values, default values given in Annex B may be applied.

5.3.4.2 Single family dwellings

The values of dayfWV ,, for single family dwellings may be given in a national annex. The corresponding value of factor f is the floor area of the dwelling.

Alternatively, the value of dayfWV ,, can be calculated. Calculations of dayfWV ,, take into account the requirements of smaller dwellings, where the domestic hot water requirement is larger on a floor area basis than it is for larger dwellings. The value of dayfWV ,, is calculated by:

fyfLnxV dayfW

=

)(,, l/m

2 per day if f > threshold level (3)

zV dayfW =,, l/m2 per day if minimum level < f < threshold level (4)

where x , y and z are constants.

Values for x , y and z as well as for the threshold level and minimum level of factor f may be given in a national annex. If a national annex is not provided or does not include these values, informative values given in Annex B may be applied. These values are based on a domestic hot water requirement in litres per m2 per day at delW , .

National regulations may require the domestic hot water requirements for single-family dwellings to be calculated separately for the kitchen and the bathroom.

5.3.5 Time periods

The weekly, monthly or annual energy needs for domestic hot water are obtained by multiplying the energy needs per day by the appropriate number of days. If different cold water supply temperatures are used for the

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calculations, determination of the weekly, monthly or annual energy needs for domestic hot water is based on the number of days associated with each cold water supply temperature used. For this purpose, the number of days associated with each cold water supply temperature used should be provided in a national annex.

5.4 Energy needs for domestic hot water based directly on floor area

This method is characterised by the assumption that there is a linear relationship between the energy needs for domestic hot water and the floor area of the building.

In this case, the energy need for domestic hot water WQ may be calculated by:

AQQ dayAWW = ,, (MJ/day) (5)

where

dayAWQ ,, is a specific energy need for domestic hot water in MJ per m2 per day based on a defined water

delivery temperature (e.g. 60 C) and a defined cold water supply temperature (e.g. 10 C);

A specified floor area, m2.

This approach may only be used if values for dayAWQ ,, are given in a national annex. The national annex shall also indicate whether the specified floor area to be applied is the net area or gross area of the building.

The weekly, monthly or annual energy needs for domestic hot water are obtained by multiplying the energy needs per day by the appropriate number of days.

5.5 Tabulated energy needs for domestic hot water

This method is characterised by the assumption that the energy needs for domestic hot water is related to the building type and use.

The energy needs for domestic hot water on a daily basis can be tabulated against a single parameter or multiple parameters depending on:

type of building;

type of activity carried out within the building;

use of a zone within a building, where more than one activity is carried out;

standards or class of activity, such as the category of a hotel (number of stars) or the class of catering establishment.

The table should be provided in a national annex.

The weekly, monthly or annual energy needs for domestic hot water are obtained by multiplying the energy needs per day by the appropriate number of days.

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Annex A (informative)

Tapping programs for single family dwellings

NOTE These tables are reproduced from EN 13203-2. Tapping program No. 2 is representative of an average European use.

Table A.1 Tapping program No. 1 (average daily tapping pattern for a single person, 36 litres at 60 C)

No

Start,time of the

day

hh/mm

Energy

kWh

Type of tapping

desired (to be achieved during tapping)

C

Minimum (for start of counting

useful energy) C

1 07.00 0,105 small 15

2 07.30 0,105 small 15

3 08.30 0,105 small 15

4 09.30 0,105 small 15

5 11.30 0,105 small 15

6 11.45 0,105 small 15

7 12.45 0,315 dishwashing 45 0

8 18.00 0,105 small 15

9 18.15 0,105 household cleaning 30

10 20.30 0,420 dishwashing 45 0

11 21.30 0,525 large 30

Total 2,100

Equivalent hot water volume at 60 C

36 litres

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Table A.2 Tapping program No. 2 (representative of an average European use) (average daily tapping pattern for a family with shower use, 100 litres at 60 C)

No

Start,time of the

day

hh/mm

Energy

kWh

Type of tapping


C


useful energy) C

1 07.00 0,105 small 15

2 07.15 1,400 shower 30

3 07.30 0,105 small 15

4 08.01 0,105 small 15

5 08.15 0,105 small 15

6 08.30 0,105 small 15

7 08.45 0,105 small 15

8 09.00 0,105 small 15

9 09.30 0,105 small 15

10 10.30 0,105 floor cleaning 30 0

11 11.30 0,105 small 15

12 11.45 0,105 small 15

13 12.45 0,315 dishwashing 45 0

14 14.30 0,105 small 15

15 15.30 0,105 small 15

16 16.30 0,105 small 15

17 18.00 0,105 small 15



20 19.00 0,105 small 15

21 20.30 0,735 dishwashing 45 0

22 21.15 0,105 small 15

23 21.30 1,400 shower 30

Total 5,845


100,2 litres

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Table A.3 Tapping program No. 3 (average daily tapping pattern for a family of 3 persons with bath and shower use, 200 litres at 60 C

No

Start,time of the

day

hh/mm

Energy

kWh

Type of tapping


C


useful energy) C

1 07.00 0,105 small 15

2 07.05 1,400 shower 30

3 07.30 0,105 small 15

4 07.45 0,105 small 15

5 08.05 3,605 bath 30 0

6 08.25 0,105 small 15

7 08.30 0,105 small 15

8 08.45 0,105 small 15

9 09.00 0,105 small 15

10 09.30 0,105 small 15

11 10.30 0,105 floor cleaning 30 0

12 11.30 0,105 small 15

13 11.45 0,105 small 15

14 12.45 0,315 dishwashing 45 0

15 14.30 0,105 small 15

16 15.30 0,105 small 15

17 16.30 0,105 small 15

18 18.00 0,105 small 15



21 19.00 0,105 small 15

22 20.30 0,735 dishwashing 45 0

23 21.00 3,605 bath 30 0

24 21.30 0,105 small 15

Total 11,655


199,8 litres

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Table A.4 Tapping flow rates

Type of tapping Energy

kWh

Hot water flow rates corresponding to a

temperature rise of 45 K l/min

Household cleaning 0,105 3 + 0,5

Small 0,105 3 + 0,5

Floor cleaning 0,105 3 + 0,5

Dishwashing 0,315 4 + 0,5



Large (cycle no. 1) 0,525 4 + 0,5

Shower 1,400 6 + 0,5

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Annex B (informative)

Informative values for calculation of the energy needs for domestic hot water in buildings

B.1 Tabulated values

Informative values of dayfWV ,, and factor f are given in Table B.1.

These values are based on a domestic hot water delivery temperature of 60 C and a cold water supply temperature of 13,5 C.

Table B.1 Values for calculation of domestic hot water requirements for buildings

Type of activity dayfWV ,,l/unit/day

funit

Dwelling See B.2 Floor area (m)

Accommodation 28 Number of beds

Health establishment without accommodation 10 Number of beds

Health establishment with accommodation without laundry

56 Number of beds

Health establishment with accommodation with laundry

88 Number of beds

Education

Offices

Theatres and lecture theatres

Shops

Hot water requirements not taken into account

Catering, 2 meals per day. Traditional cuisine

21 Number of guests per meal

Catering, 2 meals per day. Self service


Catering, 1 meal per day. Traditional cuisine


Catering, 1 meal per day. Self service


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Table B.1 Values for calculation of domestic hot water requirements for buildings

Type of activity dayfWV ,,l/unit/day

funit

Hotel, 1-star, without laundry 56 Number of beds

Hotel, 1-star, with laundry 70 Number of beds





Hotel, 4-star and GC, without laundry 118 Number of beds

Hotel, 4-star and GC, with laundry 132 Number of beds

Sports establishment 101 Number of showers installed

Storage

Industry

Transport

Other

Hot water requirements not taken into account

B.2 Default values for single family dwellings

For single family dwellings, the value of dayfWV ,, is calculated according to Equations (3) and (4) in 5.3.4.2.

Default values for x , y , z , minimum level and threshold level are:

x = 39,5 litres/day

y = 90,2 litres/day

z = 1,49 litres/m2 per day

minimum level = 14 m2

threshold level = 27 m2

UNI EN 15316-3-1:2008


EN 15316-3-1:2007 (E)

19

Bibliography

[1] EN 13203-2, Gas-fired domestic appliances producing hot water Appliances not exceeding 70 kW heat input and 300 l water storage capacity Part 2: Assessment of energy consumption

[2] prEN 156031), Energy performance of buildings Overall energy use and definition of energy ratings

[3] prCEN/TR 156151), Explanation of the general relationship between various European standards and the Energy Performance of Buildings Directive (EPBD) ("Umbrella document")

[4] EN ISO 9488, Solar energy Vocabulary (ISO 9488:1999)

1) To be published.

UNI EN 15316-3-1:2008


Riproduzione vietata - Legge 22 aprile 1941 N 633 e successivi aggiornamenti.UNIEnte Nazionale Italianodi UnificazioneVia Sannio, 220137 Milano, Italia


UNI EN 15316-3-1_2008

Documents

Transcript of UNI EN 15316-3-1_2008