SIST EN 14037-2:2004
(Main)Ceiling mounted radiant panels supplied with water at temperature below 120 °C - Part 2: Test method for thermal output
Ceiling mounted radiant panels supplied with water at temperature below 120 °C - Part 2: Test method for thermal output
Definition of the test method and the test installation for determinating the thermal output of ceiling mounted radiant panels.
Deckenstrahlplatten für Wasser mit einer Temperatur unter 120 °C - Teil 2: Prüfverfahren für die Wärmeleistung
Panneaux rayonnants de plafond alimentés en eau a une température inférieure a 120 °C - Partie 2: Méthode d'essai pour la détermination de la puissance thermique
La présente Norme européenne définit la méthode d'essai ainsi que l'installation d'essai pour la détermination de la puissance thermique des panneaux rayonnants de plafond
Stropne sevalne plošče za vodo pri temperaturi pod 120 °C - 2. del: Preskusna metoda za toplotno oddajo
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Deckenstrahlplatten für Wasser mit einer Temperatur unter 120 °C - Teil 2: Prüfverfahren für die WärmeleistungPanneaux rayonnants de plafond alimentés en eau a une température inférieure a 120 °C - Partie 2: Méthode d'essai pour la détermination de la puissance thermiqueCeiling mounted radiant panels supplied with water at temperature below 120 °C - Part 2: Test method for thermal output91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:EN 14037-2:2003SIST EN 14037-2:2004en,fr,de01-januar-2004SIST EN 14037-2:2004SLOVENSKI
STANDARD
SIST EN 14037-2:2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14037-2April 2003ICS 91.140.10English versionCeiling mounted radiant panels supplied with water attemperature below 120 °C - Part 2: Test method for thermaloutputPanneaux rayonnants de plafond alimentés en eau à unetempérature inférieure à 120 °C - Partie 2: Méthode d'essaipour la détermination de la puissance thermiqueDeckenstrahlplatten für Wasser mit einer Temperatur unter120 °C - Teil 2: Prüfverfahren für die WärmeleistungThis European Standard was approved by CEN on 20 February 2003.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 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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14037-2:2003 ESIST EN 14037-2:2004
EN 14037-2:2003 (E)2ContentsPageForeword.3Introduction.41Scope.42Normative references.43Terms and definitions.44Testing of thermal output.45Test booth.56Master Panels.107Test methods.158Carrying out of the measurement.179Test report.21Annex A (normative)
Dimensional verification of master panels.22Annex B (informative) Temperature measuring device.27Annex C (normative)
Least squares regression for a model.28Annex D (normative)
Test report.29Bibliography.32SIST EN 14037-2:2004
EN 14037-2:2003 (E)3ForewordThis document EN 14037-2:2003 has been prepared by Technical Committee CEN /TC 130, "Space heatingappliances without integral heat sources", the secretariat of which is held by UNI.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by October 2003 and conflicting national standards shall be withdrawn at the latest byOctober 2003.Annexes A, C and D are normative. Annex B is informative.This document includes a Bibliography.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 14037-2:2004
EN 14037-2:2003 (E)4IntroductionThis European Standard results from the recognition that the ceiling mounted radiant panels falling into the field ofapplication hereinafter stated are traded on the basis of their thermal output. To evaluate and compare differentceiling mounted radiant panels it is therefore necessary to refer to a single stipulated value.This European Standard of ceiling mounted radiant panels consists of the following parts:¾ Part 1: Technical specifications and requirements¾ Part 2: Test method for thermal output¾ Part 3: Rating method and evaluation of radiant thermal output1 ScopeThis European Standard describes the test method and the test installation for determining the thermal output ofceiling mounted radiant panels.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 442-2:1996, Radiators and convectors – Part 2: Test methods and rating.EN 14037-1:2003, Ceiling mounted radiant panels supplied with water at temperatures below 120 °C - Part 1:Technical specifications and requirements.EN 14037-3:2003, Ceiling mounted radiant panels supplied with water at temperatures below 120 °C - Part 3:Rating method and evaluation of radiant thermal output.EN ISO/IEC 17025:2000, General requirements for the competence of testing and calibration laboratories (ISO/IEC17025:1999).3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN 14037-1:2003 apply.4 Testing of thermal outputThe test is carried out in a testing system, which consists of a closed booth with controlled temperatures of theinside surfaces plus a set of two master panels built according to clause 6.The method for measuring the thermal output consists of the measurement of mass flow and enthalpy differencebetween inlet and outlet (by weighing method). All other measurement methods shall guarantee in minimum theprecision obtained by weighing method.All laboratories that make tests according this standard have to make comparable measurements with the otherlaboratories (according to clause 6 of this standard).SIST EN 14037-2:2004
EN 14037-2:2003 (E)55 Test boothThe booth for testing ceiling mounted radiant panels shall be constructed in a way that all six surrounding surfacescan be cooled.Figure 1 shows the schematic lay-out of a test booth with a six-wall cooling. The walls are defined as follows:Wall 1: the wall parallel to the inlet headerWall 2: the wall to the right of wall 1Wall 3: the wall opposite of wall 1Wall 4: the wall to the left of wall 1Wall 5: the floorWall 6: the ceilingSIST EN 14037-2:2004
EN 14037-2:2003 (E)6KeyCCooling circuit connectionIInlet cooling waterOOutlet cooling waterACooling water accumulatorPCirculating pumpHAfter heater1.6Designation of the surrounding inside surfacesFigure 1 — Example of the hydraulic system of a test booth5.1 Dimensions of the test boothThe test booth has to have the following inside dimensions:Length:(4 ± 0,02) mWidth:(4 ± 0,02) mHeight:(3 ± 0,02) mSIST EN 14037-2:2004
EN 14037-2:2003 (E)75.2 Emissivity of the inside surrounding surfacesWalls, ceiling and floor shall have smooth inside surfaces covered with a coat of mat paint having a degree ofemissivity of minimum 0,9.5.3 Tightness of the test boothThe test booth construction shall be sufficiently tight to prevent air infiltration.5.4 Cooling systemThe cooling system is to be carried out in order, that the difference between the 6 cooled surrounding insidesurfaces of the test booth and the average temperature of all 6 surfaces is not higher than 0,5 K. The temperaturedifference between inlet and outlet shall not be higher then 0,5 K.That condition shall be maintained at the tests for the determination of the characteristic equation. During themeasurement a reference temperature of (20 ± 0,5) °C shall be maintained in steady condition, during min. 0,5 h.5.5 Temperature measuring points5.5.1 Reference temperatureThe reference temperature is measured on at a height of 0,75 m above the floor of the test booth by means of aglobe thermometer (see Figure 2). The measuring point is situated on the vertical axis through the central point ofthe ceiling mounted radiant panel.Dimensions in millimetresKey1Temperature measuring pointFigure 2 — Globe thermometerTemperature sensor with blackened light metal sphere (diameter 150 mm, emissivity 0,9). The measuring point isarranged in the centre of the sphere. The penetration of the temperature sensor through the surface of the sphereruns horizontally and is air tight. The hollow sphere is attached to the temperature sensor.SIST EN 14037-2:2004
EN 14037-2:2003 (E)85.5.2 Air temperatureThe air temperature is measured with sensors protected against radiation (see Figure 3).The measuring points are situated on 2 vertical axes at 3 different heights as shown in Figure 4.Dimensions in millimetresKey1Temperature measuring pointHHeight of the measuring pointFigure 3 — Example of a measuring point protected against radiationSIST EN 14037-2:2004
EN 14037-2:2003 (E)9Dimensions in millimetresKey1Air temperature measuring points2Reference temperature measuring point3Ceiling mounted radiant panel4Axes of air temperature measuring pointsFigure 4 — Arrangement of measuring points for the reference temperature and for air temperaturesSIST EN 14037-2:2004
EN 14037-2:2003 (E)105.5.3 Surface temperature of the inside surfacesThe surface temperatures of the inside walls is calculated as average value of the inlet and outlet watertemperature of each single surface wall.6 Master PanelsThe master panels which are part of the testing system consist of a model with a full direct heating surface with awidth of 1190 mm (master panel 1) and of a model with 2 tubes and a radiant sheet as indirect heating surface witha width of 300 mm (master panel 2).6.1 GeneralThe purpose of the master panels is the following:a) to verify if the reproducibility of test values among test laboratories is within the limits set by this EuropeanStandard;b) to establish a common basis for all test installations to verify that the repeatability of test values in each testinstallation is within the limits set by this European Standard.To verify the reproducibility among test installations built to the present European Standard a single set of masterpanels constructed and verified according to the present European Standard will be circulated among testinstallations to determine the relevant FM,s and FO,s values. This single set of master panels is named "primary set".Each laboratory shall equip itself with the master panel 2 constructed and verified to the present EuropeanStandard. This panel named "secondary set" shall be used to verify the repeatability of the test installation.6.2 Determination of the value FFM,s of master panels (Primary set)The method of determination the value FM,s of the master panel is contained in annex A of this European Standard.6.3 Construction details6.3.1 DimensionsThe main dimensions of the two master panels are given in the drawings Figures 5 to 8.SIST EN 14037-2:2004
EN 14037-2:2003 (E)11Dimensions in millimetresKeyASection AaDetail B (see Figure 6)1Female screw socket 1”2L-profile 50 x 30 x 5length 11203Rectangular tube 70 x 11 x 2Figure 5 — Master panel 1, projection and main dimensions6.3.2 MaterialThe master panels shall be constructed from the materials stated in the drawings Figures 5 to 8.SIST EN 14037-2:2004
EN 14037-2:2003 (E)12Dimensions in millimetreswater circulationKeyBDetail BxWeldingFigure 6 — Master panel 1, details of headers, water circulationSIST EN 14037-2:2004
EN 14037-2:2003 (E)13Dimensions in millimetresKeyASection A1Front sheetBSection B2Screw socket 1”CSection C3Weldinga100% tight baffle weldedFigure 7 — Master panel 2, projection and main dimensions, detailsSIST EN 14037-2:2004
EN 14037-2:2003 (E)14Dimensions in millimetres32 double point weld joints per tubeKey1Ø-tube (45 x 45 x 2,5) mm2Double point jointsFigure 8 — Master panel 2, weld joints between radiant sheet and tube6.3.3 ConstructionMaster panels shall be constructed according to the specifications contained in this European Standard.6.3.4 Dimensional verificationMaster panels shall be dimensionally verified according to the procedure contained in this European Standard (seeannex A) and a complete report as requested by this Standard shall be prepared and kept available for any furthercheck.6.4 Verification of test installation, repeatability and reproducibilityAll test installations shall be verified for:¾ constructional conformity: The laboratory shall state the conformity to this European Standard. Any statementconcerning thermal outputs shall be accompanied by a statement indicating the test conditions in which thestated outputs have been obtained;¾ repeatability: The repeatability precision shall be within an allowed tolerance s0 when testing a single masterpanel in the same test installation at short or long intervals. The testing laboratory will use its own master panel(secondary set) to determine the repeatability tolerance s0 of the test installation. Using this master panel, heatoutput tests shall be carried out in accordance with clauses 7 and 8. The latest test for repeatability shall nothave taken place longer than 6 month before a thermal heat output test. The repeatability shall be tested every12 month in minimum. To prove the repeatability precision of a test laboratory , the results of five consecutivetests at the starting of the test installation shall be within a tolerance range s0 = 20 W according to 8.9;¾ reproducibility: The reproducibility shall be proved by using the primary set of master panels. The test results(carried out in accordance with 8.9) shall be within the tolerance sm = ± 20 W of the FM,s-value of each masterpanel.The test laboratories have to proof the reproducibility in periodical tests.SIST EN 14037-2:2004
EN 14037-2:2003 (E)157 Test methods7.1 GeneralThe aim of the thermal output test is to establish the standard characteristic equation of a ceiling mounted radiantpanel by determining the related values of thermal output and excess temperature. Neither of these quantities canbe measured directly, but shall be calculated using the values of other measurable quantities, either directly or withadditional information (calibration test, material properties table), by using mathematical relationships.7.2 Weighing methodThe thermal output Fme is calculated based on the water flow rate qm and the measured temperatures t1 and t2.These temperatures are used to calculate the specific enthalpies as determined by the international steam tables ata reference water pressure of 120 kPa:)(21mmehhq-=The water flow rate is measured directly by a calibrated flow-meter in a closed water circuit (see Figure 9) orcalculated using the mass of the water m collected in a measuring vessel and the relevant time interval t(EN 442-2:1996, 6.4.2).SIST EN 14037-2:2004
EN 14037-2:2003 (E)16Key1Panel in the test booth9Control unit for flow temperature2Water circuit for measurement10Container with overflow for calibration device3Connection of the calibration device to the measuringcircuit11Recording- and evaluating instruments4Circulating pump in the measuring circuit (controlled)12Collecting- and draining installation for calibratingmeasurement5Electric heating element in the measuring circuit for flowtemperature control13Heating device for calibrating measurement6Mass flow measuring instrument14Test booth7Temperature measuring points15Bypass8Control unit for mass flow16Water supply for calibration deviceFigure 9 — Basic diagram of test installation with continuous measurement of the mass flow (weighingmethod) and with a device for calibrating the measuring instrumentation7.3 Measurement of the inlet and outlet temperaturesThe bulk temperature of the water at inlet and outlet shall be measured with a device which ensures a sufficientaccuracy. This result can be reached for example by a measuring device according to annex B of this Standard.7.4 Measurement of the control temperaturesAll temperatures which do not serve for the determination of the thermal output shall be measured with an accuracyof ± 0,1 K.7.5 Uncertainty of the measured thermal outputThe maximum uncertainty in measuring the thermal output shall not exceed ± 10 W.SIST EN 14037-2:2004
EN 14037-2:2003 (E)177.6 Air pressureThe air pressure is measured with a tolerance of ± 2 hPa.8 Carrying out of the
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