BS EN 60379-2004 Methods for measuring the performance of electric storage water-heaters for household purposes《家用电热水器性能测量方法》.pdf

1、BRITISH STANDARD BS EN 60379:2004 Methods for measuring the performance of electric storage water-heaters for household purposes The European Standard EN 60379:2004 has the status of a British Standard ICS 91.140.65 BS EN 60379:2004 This British Standard was published under the authority of the Stan

2、dards Policy and Strategy Committee on 19 March 2004 BSI 19 March 2004 ISBN 0 580 43515 6 National foreword This British Standard is the official English language version of EN 60379:2004. It was derived by CENELEC from IEC 60379:1987. It supersedes BS 3999-2:1991 which will be withdrawn on 2006-11-

3、01. The CENELEC common modifications have been implemented at the appropriate places in the text and are indicated by tags . The UK participation in its preparation was entrusted by Technical Committee CPL/59, Performance of household appliances, to Subcommittee CPL/59/3, Performance of water heater

4、s, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under

5、 the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct appli

6、cation. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; mo

7、nitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. The BSI copyright notice displayed in this document indicates when the document was l

8、ast issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60379 February 2004 ICS 91.140.65 Supersedes HD 500 S1:1988 English version Methods for measuring the performance of electric storage water-heaters for household purposes (IEC 6

9、0379:1987, modified) Mthodes de mesure de laptitude la fonction des chauffe-eau lectriques accumulation pour usages domestiques (CEI 60379:1987, modifie) Verfahren zum Messen der Gebrauchseigenschaften von elektrischen Warmwasserspeichern fr den Hausgebrauch (IEC 60379:1987, modifiziert) This Europe

10、an Standard was approved by CENELEC on 2003-11-01. CENELEC 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-date lists and bibliographical references

11、concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member

12、into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, CzechRepublic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L

13、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Norm

14、ung Central Secretariat: rue de Stassart 35, B-1050 Brussels 2004 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60379:2004 EEN 60379:2004 BSI 19 March 2004 2 Foreword The text of the International Standard IEC 60379:1987, prepared

15、 by SC 59C, Heating appliances, of IEC TC 59, Performance of household electrical appliances, together with the common modifications prepared by the Technical Committee CENELEC TC 59X, Consumer information related to household electrical appliances, was submitted to the formal vote and was approved

16、by CENELEC as EN 60379 on 2003-11-01. This European Standard supersedes HD 500 S1:1988. It only modifies some clauses for clarification, for better reproducibility and for better information to the consumer. The following dates were fixed: This European Standard, based on HD 500 S1:1988, has been pr

17、epared by the Technical Committee CENELEC TC 59X due to the draft implementing Directive of the European Commission and the European Free Trade Association on the indication of the energy consumption of electric storage water heaters. According to this draft implementing Directive the energy consump

18、tion to be declared in kWh/year refers only to standing loss without water withdrawal and the classification of the energy efficiency is derived from this standing loss. Clauses and subclauses which are additional to those in IEC 60379 are prefixed “Z”. Technical differences to HD 500 S1:1988 are: a

19、) definition of the rated capacity (in order to clarify the term “storage temperature” used in the draft implementing Directive); b) general conditions for measurement; c) verification of the rated capacity; d) standing loss at 24 h; e) tolerances and control procedures; f) no declaration to provide

20、; g) accuracy of instrumentation; h) tolerances; i) mixed water quantity at 40 C. Endorsement notice The text of the International Standard IEC 60379:1987 was approved by CENELEC as a European Standard with agreed common modifications. Contents Page 1S c o p e 3 2O b j e c t 3 3 Terms used to design

21、ate appliances 3 4 Terms used to classify appliances 3 5 Terms relating to characteristics of appliances 4 6S y m b o l s 4 7 List of measurements 5 8 General conditions for measurements 5 9 Mounting of the water-heater 5 10 Measurement of stored water temperatures 6 11 Thermostat setting 6 12 Measu

22、rement of energy consumption 6 Z1 Accuracy of instrumentation 6 13 Verification of the actual capacity 7 14 Standing loss per 24 h 7 15 Hot water output 8 16 Reheating time 8 17 Mixing factor, mixed water output at 40 C8 18 Deviation from dial calibration 9 19 Cyclic temperature variation (different

23、ial) 9 Z2 Tolerances and control procedure 9 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2004-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2006-11-

24、01EN 60379:2004 BSI 19 March 2004 3 SECTION ONE GENERAL 1 Scope This standard applies to electric storage water-heaters for household purposes. This standard does not apply to: water-heaters using other sources of energy (e.g. solar energy); water-heaters with more than one heated volume; water-heat

25、ers without thermal insulation. The common modifications supplement, as far as necessary, test methods which shall be applied in accordance with a Commissions Directive, which is based on standing loss only, implementing Council Directive 92/75/EEC with regard to energy labelling of household electr

26、ic storage water heaters. Clauses defining permitted tolerances to values declared by the manufacturer and control procedures for checking these declared values are added. 2 Object The purpose of this standard is to state and define the principal performance characteristics of electric storage water

27、-heaters which are of interest to the user and to describe the standard methods for measuring these characteristics. This standard is concerned neither with safety nor with performance requirements. SECTION TWO DEFINITIONS AND LETTER SYMBOLS For the purpose of this standard, the following definition

28、s and letter symbols apply. 3 Terms used to designate appliances 3.1 Storage water-heater An appliance intended for heating water in a thermally well-insulated container, for the long-term storage of the heated water, and provided with a device to control the water temperature 4 Terms used to classi

29、fy appliances 1) 4.1 unvented water-heater a water-heater designed to work under the pressure of the water supply mains, the flow of water being controlled by one or more valves in the outlet system 4.2 cistern-fed water-heater a water-heater supplied from a cistern in which the flow of water is con

30、trolled by one or more valves in the outlet system and which is provided with a vent open to the atmosphere and so arranged that the expanded water can return to the feed cistern 4.3 open outlet water-heater a water-heater in which the flow of water is controlled by a valve in the inlet pipe and so

31、arranged that the expanded water can overflow through the outlet pipe 4.4 vented water-heater a water-heater open to the atmosphere, so that under no condition of use can the pressure at the surface of the water be other than atmospheric 1) See Figure 1.EN 60379:2004 4 BSI 19 March 2004 4.5 cistern-

32、type water-heater a cistern-fed water-heater which has a feed cistern as an integral part of the appliance 5 Terms relating to characteristics of appliances 5.1 Capacity 5.1.Z1 rated capacity the storage capacity assigned to the water-heater by the manufacturer and marked on it 5.1.Z2 actual capacit

33、y the water capacity determined by measurement. 5.2 rated input the electrical input assigned to the water-heater by the manufacturer and marked on it 5.3 standing loss per 24 h the energy-consumption of a filled water-heater, after steady-state conditions have been reached, when connected to the el

34、ectrical supply, during any 24 h when no water is withdrawn 5.4 rated voltage the voltage (for three phase-supply, the voltage between phases) assigned to the appliance by the manufacturer 5.Z1 mixed water quantity at 40 C quantity of water at 40 C, which has the same heat content (enthalpy) as the

35、hot water which is delivered above 40 C at the output of the water heater 6 Symbols For the purpose of this standard the symbols used have the following meanings: See Clause: A = deviation of dial-calibration 18 E = energy consumption per 24 h 14 F m = mixing factor 17 Q pr = standing loss per 24 h

36、14 t R = reheating-time 16 t R, 50 = reheating-time for a water temperature rise of 50 K 16 = temperature indicated on thermostat dial 11,18 % = cyclic variation (differential) of thermostatic control 19 amb = ambient temperature during the tests 8 C = temperature of cold water 8,15 Ai = water tempe

37、rature after a thermostat cut-out 10,14 A = mean water temperature after a thermostat cut-out 10,14 Ei = water temperature after a thermostat cut-in 10,14 E = mean water temperature after thermostat cut-in 10,14 M = mean water temperature without withdrawal 11,14 P = mean water temperature for the d

38、etermination of P 10,15 P= mean water temperature when determining the hot water output 15 R= water temperature after reheating 16 W= mean water temperature after withdrawal without replenishment 16,17EN 60379:2004 BSI 19 March 2004 5 SECTION THREE GENERAL NOTES ON MEASUREMENTS 7 List of measurement

39、s The performance of water-heaters is determined by the following measurements: A diagram of measurements is given in Figure 4. 8 General conditions for measurements Unless otherwise specified, measurements are carried out on the water-heater, operating: in a substantially draught-free room; at an a

40、mbient temperature, ambof 20 2 C. The ambient temperature is calculated from measurements at a single point in front of the centre of the water-heater halfway between the water-heater and the wall, and at half the height of the water-heater: at a relative air-humidity not exceeding 85 %. The values

41、for temperature and relative humidity are only valid at steady-state conditions and not at the moment when hot water is withdrawn from the water-heater: Text deleted mounted as described in Clause 9, supplied with water at a temperature Cof 15 2 C and provided from a source having a substantially st

42、eady pressure and installed according to the manufacturers instructions; at a thermostat-setting as described in Clause 11; the supply voltage shall be maintained at 230 V with a relative tolerance of 1 %; the supply frequency shall be 50 Hz with a relative tolerance of 1 %. 9 Mounting of the water-

43、heater Wall-mounted water-heaters are mounted on a panel situated at least 150 mm from any structural wall. They are positioned so that there is a clear space of at least 250 mm above and below the heater and at least 700 mm at the sides and front. Floor-mounted water-heaters are placed on the floor

44、 or on any stand supplied with them. A false floor may be used to facilitate measurements. Water-heaters for building-in are built in according to the manufacturers instructions. C R = rated capacity 5.1.Z1 C A = actual capacity 5.1.Z2 t Ai = cut-out time 15 t Ei = cut-in time 15 D = duration period

45、 for the tests 15 A1 = switching-off temperature of the thermostat at the beginning of the test 15 An = switching-off temperature of the thermostat at the end of the test 15 C m = mixed water output at 40 C 17 See Clause: verification of rated capacity 13 standing loss per 24 h 14 hot-water output 1

46、5 reheating time 16 mixing factor 17 deviation of dial-calibration 18 cyclic variation (differential) 19 stored water temperature 10 EN 60379:2004 6 BSI 19 March 2004 10 Measurement of stored water temperatures 10.1 Measurements of water temperature without withdrawal of water are made with a thermo

47、couple placed inside the upper section of the container. However, for metal containers the thermocouple may be placed on the outer surface of the container (see Figure 3). The mean water temperature after a thermostat cut-out Ais the average value of n temperatures Airecorded after each cut-out of t

48、he thermostat and is given by: The mean water temperature after a thermostat cut-in Eis the average value of n temperatures Eirecorded after each cut-in of the thermostat and is given by: 10.2 Measurements of temperature of withdrawn water are made in the outflow which is to be continuous. The tempe

49、rature is measured to an accuracy of 0.5 K and, if a thermometer is used, it is to be a type that records quickly and accurately in any position. Temperature readings are preferably taken continuously. Alternatively, they may be taken at equal intervals evenly spread over the discharge, for example 10 readings at 5 %, 15 %, etc. of the rated capacity. If ther