《BS-EN-814-2-1997.pdf》由会员分享，可在线阅读，更多相关《BS-EN-814-2-1997.pdf（16页珍藏版）》请在三一文库上搜索。
1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 814-2 : 1997 The Eu
2、ropean Standard EN 814-2 : 1997 has the status of a British Standard ICS 23.120; 27.080 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Air conditioners and heat pumps with electrically driven compressors Cooling mode Part 2. Testing and requirements for marking Licensed Copy:
3、 sheffieldun sheffieldun, na, Tue Nov 07 03:44:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 814-2 : 1997 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 July 1
4、997 BSI 1997 The following BSI references relate to the work on this standard: Committee reference RHE/17 Draft for comment 92/80047 DC ISBN 0 580 27902 2 Amendments issued since publication Amd. No.DateText affected Committees responsible for this British Standard The preparation of this British St
5、andard was entrusted to Technical Committee RHE/17, Testing of heat pumps and air conditioners, upon which the following bodies were represented: British Gas plc British Refrigeration Association Building Services Research and Information Association Chartered Institution of Building Services Engine
6、ers Department of the Environment Building Research Establishment Electricity Association Heating and Ventilating Contractors Association Hevac Association Institute of Refrigeration Institution of Mechanical Engineers Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:44:42 GMT+00:00 2006, U
7、ncontrolled Copy, (c) BSI BS EN 814-2 : 1997 BSI 1997i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 814-23 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:44:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii BSI 1997 BS EN 814-2 : 1997 Nati
8、onal foreword This British Standard has been prepared by Technical Committee RHE/17 and is the English language version of EN 814-2 : 1997 Air conditioners and heat pumps with electrically driven compressors Cooling mode Part 2: Testing and requirements for marking, published by the European Committ
9、ee for Standardization (CEN). Cross-references Publication referred toCorresponding British Standard BS EN 255 Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors Heating mode EN 255-2 : 1988Part 2: Testing and requirements for marking for space heating BS
10、EN 814 Air conditioners and heat pumps with electrically driven compressors Cooling mode EN 814-1 : 1996Part 1: Terms, definitions and designations Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an
11、 inside front cover, pages i and ii, the EN title page, pages 2 to 10, an inside back cover and a back cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:44:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN European Committee for Standardization Comite Europe en de Normalisation Europa
12、 isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 Copyright reserved to CEN members Ref. No. EN 814-2 : 1997 E EUROPEAN STANDARDEN 814-2 NORME EUROPE ENNE EUROPA ISCHE NORM February 1997 ICS 23.120; 27.080; 91.140.30 Descriptors: Air conditioning equipment, a
13、ir conditioners, tests, testing conditions, installation, measurements, calorific power, marking English version Air conditioners and heat pumps with electrically driven compressors Cooling mode Part2: Testing and requirements for marking This European Standard was approved by CEN on 1997-01-27. CEN
14、 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 concerning such national standards may be obtained on appl
15、ication to the Central Secretariat 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 under the responsibility of a CEN member into its own language and notified to the Central Secretariat has
16、the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Climatiseurs et pompes a chaleur
17、avec compresseur entraine par moteur e lectrique Mode re frige ration Partie 2: Essais et exigences de marquage Luftkonditionierer und Wa rmepumpen mit elektrisch angetrieben Verdichtern Ku hlen Teil 2: Pru fungen und Anforderungen an die Kennzeichung Licensed Copy: sheffieldun sheffieldun, na, Tue
18、Nov 07 03:44:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 814-2 : 1997 BSI 1997 Foreword This European Standard has been prepared by Technical Committee CEN/TC 113, Heat pumps and air conditioners, of which the secretariat is held by AFNOR. This standard consists of the following parts: E
19、N 814-1Air conditioners and heat pumps with electrically driven compressors Cooling mode Part 1: Terms, definitions and designations EN 814-2Air conditioners and heat pumps with electrically driven compressors Cooling mode Part 2: Testing and requirements for marking EN 814-3Air conditioners and hea
20、t pumps with electrically driven compressors Cooling mode Part 3: Requirements 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 August 1997, and conflicting national standards shall be withdrawn at
21、 the latest by August 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands,
22、 Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 4Performance test3 5Test report7 6Marking7 Annex A(informative) Bibliography9 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:44:42 GMT+00:00 2006, Unc
23、ontrolled Copy, (c) BSI Page 3 EN 814-2 : 1997 BSI 1997 1 Scope This part of EN 814 specifies methods for testing and reporting of the rating and specifies requirements for marking of air and water cooled air conditioners, air/air and water/air heat pumps with electrically driven compressors when us
24、ed in cooling mode. When these units are used in heating mode by reversing the refrigerating cycle, then EN 255-2 applies. This standard applies to factory-made units which can be ducted. The units can be of the following specific types: comfort air conditioner or heat pump, spot air conditioner, si
25、ngle duct air conditioner, control cabinet air conditioner, close control air conditioner. In the case of units consisting of several parts, the standard applies only to those designed and supplied as a complete package. Units having two or more indoor sections connected to a single outdoor unit (mu
26、ltiple split system air conditioners or heat pumps) are excluded from this standard. This standard does not apply to continuously variable capacity control units. This standard does not apply to liquid chilling packages/units. 2 Normative references This European Standard incorporates by dated or un
27、dated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only whe
28、n incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. EN 255-2Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors Heating mode Part 2: Testing and requirements for marking for space
29、 heating units EN 814-1Air conditioners and heat pumps with electrically driven compressors Cooling mode Part 1: Terms, definitions and designations 3 Definitions For the purposes of this standard, the definitions given in EN 814-1 apply. 4 Performance test 4.1 Basic principles 4.1.1 General All mea
30、sured parameters, with the exception of time measurement, shall be understood to be average values over the duration of the test period. 4.1.2 Cooling capacity The cooling capacity of the unit is determined by measurements in a calorimeter room or by the air enthalpy method. The cooling capacity sha
31、ll be corrected for the heat from the fan: If the fan at the evaporator is an integral part of the unit, the heat from this should not affect the cooling capacity greater than the declared value of uncertainty. If the heat is greater, then the same power (calculated in 4.1.4.1) which is excluded fro
32、m the input is also added to the cooling capacity. If the fan at the evaporator is not an integral part of the unit the heat from this should also not affect the cooling capacity greater than the declared value of uncertainty. If the heat is greater, then the same power (calculated in 4.1.4.2) which
33、 is included in the input is also subtracted from the cooling capacity. 4.1.3 Power input of fans for units without duct connection In the case of units which are not designed for duct connection, i.e. which do not permit any external pressure difference, and which are equipped with an integral fan,
34、 the power absorbed by the fan shall be included in the effective power absorbed by the unit. 4.1.4 Power input of fans for units with duct connection 4.1.4.1 If a fan is an integral part of the unit, only a fraction of the input of the fan motor shall be included in the effective power absorbed by
35、the unit. The fraction which is to be excluded from the total power absorbed by the unit shall be calculated using the following formula: in watts q Dpe h where his 0,3 by convention; Dpeis the available external static pressure difference, in pascals; qis the nominal air flow rate, in cubic meters
36、per second. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:44:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 814-2 : 1997 BSI 1997 4.1.4.2 If no fan is provided with the unit, the proportional power input which is to be included in the effective power absorbed by the unit, shall
37、be calculated using the following formula: in watts qDpi h where his 0,3 by convention; Dpiis the measured internal static pressure difference, in pascals; qis the nominal air flow rate, in cubic meters per second. 4.1.5 Power input of water pump 4.1.5.1 If a water pump is an integral part of the un
38、it, only a fraction of the input to the pump motor shall be included in the effective power absorbed by the unit. The fraction which is to be excluded from the total power absorbed by the unit shall be calculated using the following formula: in watts qDpe h where his 0,3 by convention; Dpeis the ava
39、ilable external static pressure difference, in pascals; qis the nominal water flow rate, in cubic meters per second. 4.1.5.2 If no water pump is provided with the unit, the proportional power input which is to be included in the effective power absorbed by the unit, shall be calculated using the fol
40、lowing formula: in watts qDpi h where his 0,3 by convention; Dpiis the measured internal static pressure difference, in pascals; qis the nominal water flow rate, in cubic meters per second. 4.1.5.3 In the case of appliances designed especially to operate on a distributing network of pressurized wate
41、r without water-pump, no correction is to be applied to the power input. 4.2 Test apparatus 4.2.1 Arrangement of the test apparatus 4.2.1.1 General requirements The test apparatus shall be designed in such a way that all requirements on adjustment of set values, stability criteria and uncertainties
42、of measurement according to this European Standard can be fulfilled. Ducted air systems shall be sufficiently air tight to ensure that the measured results are not significantly influenced by exhange of air with the surroundings. 4.2.1.2 Test room for the evaporator The size of the test room shall b
43、e selected such that any resistance to air flow at the air inlet and air outlet orifices of the test object is avoided. The air flow through the room shall not be capable of initiating any short circuit between these two orifices, and therefore the velocity of the air flows through the room at these
44、 two locations shall not exceed 1,5 m/s when the test object is switched off. The air velocity in the room shall also not be greater than the mean velocity through the unit inlet. Unless otherwise stated by the manufacturer, the air inlet or air outlet orifices shall be not less than 1 m distant fro
45、m the surfaces of the test room; this also applies to any measuring ducts. Any direct heat radiation by heating devices in the test room onto the unit or onto the temperature measuring points shall be avoided. 4.2.1.3 Setting of the external static pressure difference on the air side for appliances
46、with duct connection For appliances with duct connection, the maximum external static pressure difference available at the nominal flow rate specified by the manufacturer is preferably set on the air outlet side of the unit when the refrigerating system does not operate. The nominal air flow shall t
47、hen be verified. 4.2.1.4 Setting of the external static pressure difference on the water side for appliances with integral water pumps For appliances with integral water pumps, the maximum external static pressure difference available at the nominal flow rate specified by the manufacturer is prefera
48、bly set on the water outlet side of the unit, this also sets the water flows. 4.2.2 Installation and connection of the test object The test object shall be installed and connected for the test as recommended by the manufacturer in his installation and operation manual. The accessories provided by op
49、tion (for example heating device) are not included in the test. Temperature and pressure measuring points shall be arranged in order to obtain mean significant values. For control cabinet air conditioners, the inlet temperature at the evaporator is measured instead of the temperature inside the control cabinet. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 03:44:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 814-2 : 1997 BSI 1997 Table 1. Uncertainties of measurement for indicated values Measured