1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 15316-4-8:2011Heating systems in buildings Method for calculation ofsystem energy requirementsand system efficienciesPart 4-8: Space heating generation systems,air heating
2、and overhead radiant heatingsystemsBS EN 15316-4-8:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN15316-4-8:2011.The UK participation in its preparation was entrusted to TechnicalCommittee RHE/24, Central heating installations.A list of organizations repres
3、ented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 71507 5ICS 91.140.10Compliance with a British Standard cannot confer imm
4、unity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2011.Amendments issued since publicationDate Text affectedBS EN 15316-4-8:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15316-4-8 February 2011 ICS
5、 91.140.10 English Version Heating systems in buildings - Method for calculation of system energy requirements and system efficiencies - Part 4-8: Space heating generation systems, air heating and overhead radiant heating systems Systmes de chauffage dans les btiments - Mthode de calcul des besoins
6、nergtiques et des rendements des systmes - Partie 4-8: Systmes de gnration de chauffage des locaux, systmes de chauffage par air chaud et par rayonnement Heizungsanlagen in Gebuden - Verfahren zur Berechnung des Endenergiebedarfs und des Nutzungsgrades von Anlagen - Teil 4-8: Wrmeerzeugung von Warml
7、uft- und Strahlungsheizsystemen This European Standard was approved by CEN on 9 January 2011. 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 national standard without any alteration. Up-to-dat
8、e lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation
9、under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Fran
10、ce, 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 NORMALISATION EUROPISCHES KOMITEE FR
11、 NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15316-4-8:2011: EBS EN 15316-4-8:2011EN 15316-4-8:2011 (E) 2 Contents Page Foreword 4Introduction .51 Scope 62 Norma
12、tive references 63 Terms, definitions, symbols and units 73.1 Terms and definitions .73.2 Symbols and units 104 Principle of the method 124.1 Heat balance of the generation sub-system, including control of heat generation 124.1.1 Physical factors taken into account . 124.1.2 Calculation structure (i
13、nput and output data) . 134.2 Thermal energy required for heat generation 154.3 Auxiliary energy Wgen. 154.4 Recoverable, recovered and unrecoverable heat loss . 154.5 Calculation steps 165 Generation system calculation 165.1 Principle of the method 165.2 Load factor 185.3 Specific heat losses . 195
14、.3.1 General . 195.3.2 Heat losses through the chimney with burner on (ch,on) 195.3.3 Induced ventilation heat losses (vent) . 205.3.4 Losses through the generator envelope (gen,env) . 205.3.5 Pilot flame losses (plt) . 215.3.6 Heat recovery from condensation (cond) 215.4 Total heat losses . 215.4.1
15、 Burner ON losses (on) . 215.4.2 Burner OFF Losses (off) 215.5 Auxiliary energy 225.5.1 Auxiliary energy related to time burner on 225.5.2 Auxiliary energy of additional devices (after the burner) . 225.6 Calculation procedure 235.6.1 Calculation procedure for on-off generators . 235.6.2 Calculation
16、 procedure for modulating or multistage generators 23Annex A (informative) Default values . 27A.1 Default values for (ch,on) 27A.2 Default values for (vent) . 28A.3 Default values for (gen,env) 29A.4 Default values for (plt) 30A.5 Default values for (cond) . 30A.6 Default values for auxiliary energy
17、 . 31Annex B (informative) Examples of use of the calculation 32B.1 Calculation example 1 - Overhead radiant tube heating system . 32BS EN 15316-4-8:2011EN 15316-4-8:2011 (E) 3 B.2 Calculation example 2 Overhead luminous radiant heating system . 34B.3 Calculation example 3 Condensing air heating sys
18、tem . 35Bibliography 38BS EN 15316-4-8:2011EN 15316-4-8:2011 (E) 4 Foreword This document (EN 15316-4-8:2011) has been prepared by Technical Committee CEN/TC 228 “Heating systems in buildings”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national st
19、andard, either by publication of an identical text or by endorsement, at the latest by August 2011, and conflicting national standards shall be withdrawn at the latest by August 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights
20、. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. 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, Croatia, Cyp
21、rus, 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 the United Kingdom. BS EN 15316-4-8:2011EN 15316-4-8:201
22、1 (E) 5 Introduction This European Standard presents methods for calculation of the additional energy requirements of a heat generation system in order to meet the building demand. The calculation is based on the performance characteristics of the products given in product standards and on other cha
23、racteristics required to evaluate the performance of the products as included in the system. This method can be used for the following applications: judging compliance with regulations expressed in terms of energy targets; optimisation of the energy performance of a planned heat generation system, b
24、y applying the method to several possible options; assessing the effect of possible energy conservation measures on an existing heat generation system, by calculating the energy use with and without the energy conservation measure. The user should refer to other European Standards or to national doc
25、uments for input data and detailed calculation procedures not provided by this standard. BS EN 15316-4-8:2011EN 15316-4-8:2011 (E) 6 1 Scope This European Standard is part of a series of standards on the method for calculation of system energy requirements and system efficiencies. The scope of this
26、specific part is to standardise the: required inputs; calculation method; resulting outputs for space heating generation by: a) air heating systems, including control, and b) overhead radiant heating systems for non-domestic use , including control. This European Standard does not apply to air heati
27、ng systems that utilise water as a heat transfer medium. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (incl
28、uding any amendments) applies. EN 416-1, Single burner gas-fired overhead radiant tube heaters for non-domestic use Part 1: Safety EN 419-1, Non-domestic gas-fired overhead luminous radiant heaters Part 1:Safety EN 621, Non-domestic gas-fired forced convection air heaters for space heating not excee
29、ding a net heat input of 300 kW, without a fan to assist transportation of combustion air and/or combustion products EN 777-1, Multi-burner gas-fired overhead radiant tube heater systems for non-domestic use Part 1: System D - Safety EN 777-2, Multi-burner gas-fired overhead radiant tube heater syst
30、ems for non-domestic use Part 2: System E - Safety EN 777-3, Multi-burner gas-fired overhead radiant tube heater systems for non domestic use Part 3: System F - Safety EN 777-4, Multi-burner gas-fired overhead radiant tube heater systems for non-domestic use Part 4: System H - Safety EN 778, Domesti
31、c gas-fired forced convection air heaters for space heating not exceeding a net heat input of 70 kW, without a fan to assist transportation of combustion air and/or combustion products EN 1020, Non-domestic forced convection gas-fired air heaters for space heating not exceeding a net heat input of 3
32、00 kW, incorporating a fan to assist transportation of combustion air or combustion products EN 1196, Domestic and non-domestic gas-fired air heaters Supplementary requirements for condensing air heaters EN 1319, Domestic gas-fired forced convection air heaters for space heating, with fan-assisted b
33、urners not exceeding a net heat input of 70 kW BS EN 15316-4-8:2011EN 15316-4-8:2011 (E) 7 EN 13410, Gas-fired overhead radiant heaters Ventilation requirements for non-domestic premises EN 15316-2-1, Heating systems in buildings Method for calculation of system energy requirements and system effici
34、encies Part 2-1: Space heating emission systems EN 15316-2-3, Heating systems in buildings Method for calculation of system energy requirements and system efficiencies Part 2-3: Space heating distribution systems EN 15316-4-1:2008, Heating systems in buildings Method for calculation of system energy
35、 requirements and system efficiencies Part 4-1: Space heating generation systems, combustion systems (boilers) EN ISO 7345:1995, Thermal insulation Physical quantities and definitions (ISO 7345:1987) EN ISO 13790, Energy performance of buildings Calculation of energy use for space heating and coolin
36、g (ISO 13790:2008) 3 Terms, definitions, symbols and units 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 7345:1995 and the following apply. 3.1.1 air heating system heating system composed of one or more individual forced convection air heatin
37、g appliances 3.1.2 auxiliary energy electrical energy used by technical building systems for heating, cooling, ventilation and /or domestic water to support energy transformation to satisfy energy needs NOTE 1 This includes energy for fans, pumps, electronics, etc. NOTE 2 Adapted from EN 15316-1:200
38、7. 3.1.3 calculation period time period over which the calculation is performed NOTE The calculation period can be divided into a number of calculation steps. EN 15316-1:2007 3.1.4 combustion power product of the fuel flow rate and the net caloric value of the fuel 3.1.5 condensing air heater air he
39、ater designed to make use of the latent heat released by condensation of water vapour in the combustion flue products NOTE The heater will allow the condensate to leave the heat exchanger in liquid form by way of a condensate drain. 3.1.6 energy need for heating or cooling energy to be delivered to
40、or extracted from a conditioned space to maintain the intended temperature conditions during a given period of time BS EN 15316-4-8:2011EN 15316-4-8:2011 (E) 8 3.1.7 energy use for space heating energy input to the heating system to satisfy the energy need for heating 3.1.8 forced convection air hea
41、ter appliance designed to provide space heating from a central source by distributing heated air, by means of an air moving device, either through ducting or directly into the heated space 3.1.9 flued heater heating appliance of type B or C, connected to a flue or a device for evacuating the product
42、s of combustion to the outside of the room in which the appliance is installed 3.1.10 gross calorific value quantity of heat released by a unit quantity of fuel, when it is burned completely with oxygen at a constant pressure equal to 101 320 Pa, and when the products of combustion are returned to a
43、mbient temperature NOTE 1 This quantity includes the latent heat of condensation of any water vapour contained in the fuel and of the water vapour formed by the combustion of any hydrogen contained in the fuel. NOTE 2 Adapted from EN 15316-4-7:2008. 3.1.11 high-low appliance appliance capable of ope
44、rating either at its nominal fuel heat input or at a fixed reduced heat input 3.1.12 heated space room or enclosure which, for the purposes of the calculation, is assumed to be heated to a given set-point temperature or set point temperatures, and whose total volume can be split up into several heat
45、ing zones 3.1.13 heating system thermal loss thermal loss from a technical building system for heating that does not contribute to the useful output of the system NOTE Thermal energy recovered directly in the subsystem is not considered as a system thermal loss but as heat recovery and directly trea
46、ted in the related system standard. 3.1.14 load factor ratio between the time the burner is on and the total time the generation system is available to supply heat as demanded by system controls 3.1.15 modes of operation various modes in which the heating system can operate (set-point mode, cut-off
47、mode, reduced mode, set-back mode, boost mode) EN 15316-4-7:2008 3.1.16 modulating appliance appliance capable of varying its heat input in a continuous manner between the nominal fuel heat input and a minimum value, whilst maintaining continuous burner firing BS EN 15316-4-8:2011EN 15316-4-8:2011 (
48、E) 9 3.1.17 multi-burner overhead radiant tube system radiant tube heater system which employs two or more burner units with each unit incorporating independent flame monitoring NOTE The units may be located in one or more sections of tubing. One or more fans may be used to assist in the evacuation
49、of products of combustion or the supply of combustion air. 3.1.18 net calorific value gross calorific value minus condensation latent heat of the water vapour in the products of combustion at ambient temperature 3.1.19 on/off appliance appliance without the capability to vary the fuel burning rate whilst maintaining continuous burner firing NOTE This includes appliances with alternative burning rates set once only a
