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1、BRITISH STANDARD BS EN 15316-2-3:2007 Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 2-3: Space heating distribution systems The European Standard EN 15316-2-3:2007 has the status of a British Standard ICS 91.140.10 ? Licensed Copy: Lon
2、don South Bank University, London South Bank University, Sat Sep 01 03:27:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 15316-2-3:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2007 BSI 2007 ISBN 978 0 580 56021 7 Nation
3、al foreword This British Standard is the UK implementation of EN 15316-2-3:2007. The UK participation in its preparation was entrusted to Technical Committee RHE/24, Central heating installations. A list of organizations represented on this committee can be obtained on request to its secretary. This
4、 publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London So
5、uth Bank University, London South Bank University, Sat Sep 01 03:27:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15316-2-3 July 2007 ICS 91.140.10 English Version Heating systems in buildings - Method for calculation of system energy requirements
6、 and system efficiencies - Part 2-3: Space heating distribution systems Systmes de chauffage dans les btiments - Mthode de calcul des besoins nergtiques et des rendements des systmes - Partie 2-3: Systmes de distribution de chauffage des locaux Heizsysteme in Gebuden - Verfahren zur Berechnung der E
7、nergieanforderungen und Nutzungsgrade der Anlagen - Teil 2-3: Wrmeverteilungssysteme This European Standard was approved by CEN on 21 June 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a
8、national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards 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
9、 in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denma
10、rk, 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 STANDARDIZATION COMIT EUROPEN DE NORMALISAT
11、ION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15316-2-3:2007: E Licensed Copy: London South Bank University, London South Bank Universi
12、ty, Sat Sep 01 03:27:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 15316-2-3:2007 (E) 2 Contents Page Foreword4 Introduction.6 1 Scope 7 2 Normative references7 3 Terms and definitions .7 4 Symbols, units and indices 9 5 Principle of the method and definitions10 6 Auxiliary energy demand12 6.1 Ge
13、neral12 6.2 Design hydraulic power 12 6.3 Detailed calculation method.13 6.3.1 Input/output data13 6.3.2 Calculation method14 6.3.3 Correction factors15 6.3.4 Expenditure energy factor 17 6.3.5 Intermittent operation21 6.4 Deviations from the detailed calculation method.23 6.5 Monthly auxiliary ener
14、gy demand23 6.6 Recoverable auxiliary energy.24 7 System thermal loss of distribution systems.24 7.1 General24 7.2 Detailed calculation method.24 7.2.1 Input/output data24 7.2.2 Calculation method25 7.2.3 Thermal losses of accessories.26 7.2.4 Recoverable and un-recoverable system thermal loss .27 7
15、.2.5 Total system thermal loss.27 7.3 Calculation of linear thermal transmittance (W/mK):.27 7.4 Calculation of mean part load of distribution per zone.28 8 Calculation of supply and return temperature depending on mean part load of distribution.28 8.1 Temperature calculation of heat emitters .28 8.
16、1.1 General28 8.1.2 Continuous control depending on outdoor temperature 29 8.1.3 Continuous control with thermostatic valves.29 8.1.4 On-Off control with room thermostat 30 8.2 Effect of by-pass connections30 8.3 Effect of mixing valves31 8.4 Parallel connection of distribution circuits.32 8.5 Prima
17、ry circuits33 Annex A (informative) Preferred procedures .34 A.1 Simplified calculation method for determination of annual auxiliary energy demand 34 A.1.1 Input/output data34 A.1.2 Calculation method35 A.1.3 Correction factors37 A.1.4 Expenditure energy factor 37 A.1.5 Intermittent operation38 A.1.
18、6 Monthly auxiliary energy demand and recoverable auxiliary energy 38 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:27:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 15316-2-3:2007 (E) 3 A.2 Tabulated calculation method for determination of annual auxilia
19、ry energy demand 39 A.2.1 Input/output data.39 A.2.2 Calculation method, tabulated values.39 A.2.3 Monthly auxiliary energy demand and recoverable auxiliary energy41 A.3 Simplified calculation method for determination of annual system thermal loss41 A.3.1 Input/output data.41 A.3.2 Calculation metho
20、d.42 A.3.3 Approximation of the length of pipes per zone in distribution systems.42 A.3.4 Default values of the outer total surface coefficient of heat transfer (convection and radiation) 43 A.3.5 Approximation of -values 43 A.3.6 Equivalent length of valves44 A.3.7 Default values for the exponent o
21、f the heat emission system .44 A.4 Tabulated calculation method for determination of annual system thermal loss44 A.4.1 Input/output data.44 A.4.2 Calculation method, tabulated values.45 A.5 Example46 Bibliography49 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 0
22、1 03:27:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 15316-2-3:2007 (E) 4 Foreword This document (EN 15316-2-3:2007) 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 n
23、ational standard, either by publication of an identical text or by endorsement, at the latest by January 2008, and conflicting national standards shall be withdrawn at the latest by January 2008. This document has been prepared under a mandate given to CEN by the European Commission and the European
24、 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
25、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 he
26、ating 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
27、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
28、 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,
29、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.
30、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 Licensed Copy: London South Bank Unive
31、rsity, London South Bank University, Sat Sep 01 03:27:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 15316-2-3:2007 (E) 5 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) Par
32、t 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: H
33、eat 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
34、 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
35、, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:27:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI
36、EN 15316-2-3:2007 (E) 6 Introduction In a distribution system, energy is transported by a fluid from the heat generation to the heat emission. As the distribution system is not adiabatic, part of the energy carried is emitted to the surrounding environment. Energy is also required to distribute the
37、heat carrier fluid within the distribution system. In most cases this is electrical energy required by the circulation pumps. This leads to additional thermal and electrical energy demand. The thermal energy emitted by the distribution system and the electrical energy required for the distribution,
38、may partially be recovered as heat, if the distribution system is placed inside the heated envelope of the building. This European Standard provides three methods of calculation. The detailed calculation method describes the basics and the physical background of the general calculation method. The r
39、equired input data are part of the detailed project data assumed to be available (such as length of pipes, type of insulation, manufacturers data for the pumps etc.). The detailed calculation method provides the most accurate energy demand and heat emission. For the simplified calculation method, so
40、me assumptions are made for the most relevant cases, reducing the required input data (e.g. the lengths of pipes are calculated by approximations depending on the outer dimensions of the building and efficiency of pumps is approximated). This method may be applied if only few data are available (in
41、general at an early stage of design). With the simplified calculation method, the calculated energy demand is generally higher than the calculated energy demand by the detailed calculation method. The assumptions made for the simplified method depend on national design, and therefore this method is
42、part of informative Annex A. The tabulated calculation method is based on the simplified calculation method, with some further assumptions being made. Only input data for the most important influences are required with this method. The further assumptions made for this method depend on national desi
43、gn as well, and therefore the tabulated method is also part of informative Annex A. Other influences, which are not reflected by the tabulated values, shall be calculated by the simplified or the detailed calculation method. The energy demand determined from the tabulated calculation method is gener
44、ally higher than the calculated energy demand by the simplified calculation method. Use of this method is possible with a minimum of input data. The general calculation method for the electrical energy demand of pumps consists of two parts. The first part is calculation of the hydraulic demand of th
45、e distribution system, and the second part is calculation of the expenditure energy factor of the pump. Here, it is possible to combine the detailed and the simplified calculation method. For example, calculation of pressure loss and flow may be done by the detailed calculation method and calculatio
46、n of the expenditure energy factor may be done by the simplified calculation method (when the data of the building are available and the data of the pump are not available) or vice versa. In national annexes, the simplified calculation method as well as the tabulated calculation method could be appl
47、ied through a.o. relevant boundary conditions of each country, thus facilitating easy calculations and quick results. In national annexes, it is only allowed to change the boundary conditions and other assumptions. The calculation methods as described are to be applied. The recoverable part of the a
48、uxiliary energy demand is given as a fixed ratio and is therefore also easy to determine. Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:27:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 15316-2-3:2007 (E) 7 1 Scope This European Standard provides a method
49、ology 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 sim