SIST EN 14037-2:2017
(Main)Free hanging heating and cooling surfaces for water with a temperature below 120°C - Part 2: Pre-fabricated ceiling mounted radiant panels for space heating - Test method for thermal output
Free hanging heating and cooling surfaces for water with a temperature below 120°C - Part 2: Pre-fabricated ceiling mounted radiant panels for space heating - Test method for thermal output
This European Standard describes the test method and the test installation for determining the thermal output
of pre-fabricated ceiling mounted radiant panels according to the specifications of EN 14037-1:2016,
3.3.1.
An der Decke frei abgehängte Heiz- und Kühlflächen für Wasser mit einer Temperatur unter 120 °C - Teil 2: Vorgefertigte Deckenstrahlplatten zur Raumheizung - Prüfverfahren für die Wärmeleistung
Panneaux rayonnants de chauffage et de rafraîchissement alimentés avec une eau à une température inférieure à 120 °C - Partie 2 : Méthode d’essai pour la détermination de la puissance thermique des panneaux rayonnants de plafond préfabriqués destinés au chauffage des locaux
La présente Norme européenne décrit la méthode d'essai et l'installation d'essai permettant de déterminer la puissance thermique des panneaux rayonnants de plafond préfabriqués selon les spécifications de l'EN 14037-1:2016, paragraphe 3.3.1.
Prosto viseče grelne in hladilne površine za vodo s temperaturo do 120 °C - 2. del: Predizdelane stropne sevalne plošče za ogrevanje prostora - Metoda preskušanja toplotne moči
Ta evropski standard opisuje preskusno metodo in preskusno napravo za določevanje toplotne moči predizdelanih stropnih sevalnih plošč v skladu s specifikacijami v standardu EN 14037-1:2016, 3.3.1.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.An der Decke frei abgehängte Heiz- und Kühlflächen für Wasser mit einer Temperatur unter 120 °C - Teil 2: Vorgefertigte Deckenstrahlplatten zur Raumheizung - Prüfverfahren für die WärmeleistungPanneaux rayonnants de chauffage et de rafraîchissement alimentés avec une eau à une température inférieure à 120 °C - Partie 2 : Méthode d’essai pour la détermination de la puissance thermique des panneaux rayonnants de plafond préfabriqués destinés au chauffage des locauxFree hanging heating and cooling surfaces for water with a temperature below 120°C - Part 2: Pre-fabricated ceiling mounted radiant panels for space heating - Test method for thermal output91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:EN 14037-2:2016SIST EN 14037-2:2017en01-april-2017SIST EN 14037-2:2017SLOVENSKI
STANDARDSIST EN 14037-2:20041DGRPHãþD
SIST EN 14037-2:2017
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14037-2
September
t r s x ICS
{ sä s v rä s r Supersedes EN
s v r u yæ tã t r r uEnglish Version
Free hanging heating and cooling surfaces for water with a temperature below
s t r ¹C æ Part
tã Preæfabricated ceiling mounted radiant panels for space heating æ Test method for thermal output Panneaux rayonnants de chauffage et de rafraîchissement alimentés avec une eau à une température inférieure à
s t r
¹C æ Partie
t ã Méthode d 5essai pour la détermination de la puissance thermique des panneaux rayonnants de plafond préfabriqués destinés au chauffage des locaux
An der Decke frei abgehängte Heizæ und Kühlflächen für Wasser mit einer Temperatur unter
s t r
¹C æ Teil
tã Vorgefertigte Deckenstrahlplatten zur Raumheizung æ Prüfverfahren für die Wärmeleistung This European Standard was approved by CEN on
s { March
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
9
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s v r u yæ tã t r s x ESIST EN 14037-2:2017
EN 14037-2:2016 (E)
2 Contents Page European foreword . 4 Introduction . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Testing of thermal output . 6 5 Test booth . 6 5.1 General . 6 5.2 Dimensions of the test booth . 7 5.3 Emissivity of the inside surrounding surfaces . 8 5.4 Tightness of the test booth. 8 5.5 Cooling system . 8 5.6 Temperature measuring points . 8 5.6.1 Reference room temperature . 8 5.6.2 Air temperature . 9 5.6.3 Surface temperature of the inside surfaces . 10 6 Master Panels . 11 6.1 Introduction . 11 6.2 General . 11 6.3 Determination of the value M,s of master panels (Primary set) . 11 6.4 Construction details . 11 6.4.1 Dimensions . 11 6.4.2 Material . 11 6.4.3 Construction . 11 6.4.4 Dimensional verification . 11 6.5 Verification of test installation, repeatability and reproducibility . 17 7 Test methods . 17 7.1 General . 17 7.2 Weighing method . 18 7.3 Measurement of the inlet and outlet temperatures . 19 7.4 Measurement of the control temperatures . 19 7.5 Uncertainty of the measured thermal output . 19 7.6 Air pressure. 19 8 Carrying out the measurement . 20 8.1 General . 20 8.2 Dimensions and construction of the test samples. 20 8.3 Selection of the models to be tested for determining the thermal output of a type . 20 8.4 Manufacturer documents for the test samples. 20 8.5 Arrangement of the sample in the test booth . 20 8.6 Upper insulation of the test sample. 22 8.7 Connection of the test sample to the measuring circuit . 22 8.8 Tests . 22 8.9 Mass flow . 23 8.10 Test temperatures . 23 SIST EN 14037-2:2017
EN 14037-2:2016 (E)
3 8.11 Steady-state conditions . 23 8.12 Correction due to the air pressure . 23 8.13 Result of measurement – Characteristic equation . 23 9 Test report . 24 9.1 General . 24 9.2 Data . 24 Annex A (normative)
Dimensional verification of master panels. 26 A.1 General . 26 A.2 Determination M,s -values of the master panels (primary set) . 26 A.3 Dimensional verification and manufacturing certification for master panel 1 . 26 A.4 Dimensional verification and manufacturing certification for master panel 2 . 28 Annex B (informative)
Temperature measuring device. 31 Annex C (normative)
Least squares regression for a model . 32 Annex D (informative)
Specimen of the test report for heating capacity . 33 Bibliography . 36
SIST EN 14037-2:2017
EN 14037-2:2016 (E)
4 European foreword This document (EN 14037-2:2016) has been prepared by Technical Committee CEN/TC 130 “Space heating appliances without integral heat sources”, the secretariat of which is held by UNI. This document supersedes EN 14037-2:2003. 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 March 2017, and conflicting national standards shall be withdrawn at the latest by March 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. The main changes are: — the title has been changed, — the introduction has been changed, — the scope has been changed, — a new Master panel 2 has been added, — Clause 9 “Test Report” has been reworked. The European Standard EN 14037, Free hanging heating and cooling surfaces for water with a temperature below 120°C, consists of the following parts: — Part 1: Pre-fabricated ceiling mounted radiant panels for space heating - Technical specifications and re-quirements; — Part 2: Pre-fabricated ceiling mounted radiant panels for space heating - Test method for thermal output; — Part 3: Pre-fabricated ceiling mounted radiant panels for space heating - Rating method and evaluation of radiant thermal output; — Part 4: Pre-fabricated ceiling mounted radiant panels for space heating - Test method for cooling capacity; — Part 5: Open or closed heated ceiling surfaces - Test method for thermal output. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portu-gal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 14037-2:2017
EN 14037-2:2016 (E)
5 Introduction This European Standard results from the recognition, that heated and chilled ceiling radiant panels falling into the field of application hereinafter stated are traded on the basis of their thermal output. For evaluating and comparing different heated and chilled ceiling surfaces it is therefore necessary to refer to a heating stipulated value. As installations with ceiling mounted radiant panels can also be used in practice for space cooling, it is nec-essary to have a test method for evaluating the cooling capacity. Installations with different free hanging heating and cooling surfaces need, for the use of space heating a test method for evaluating the heating out-put. The test method differs from the method for ceiling mounted radiant panels. SIST EN 14037-2:2017
EN 14037-2:2016 (E)
6 1 Scope This European Standard describes the test method and the test installation for determining the thermal out-put of pre-fabricated ceiling mounted radiant panels according to the specifications of EN 14037-1:2016, 3.3.1. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indis-pensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 14037-1:2016, Prefabricated ceiling mounted radiant panels for space heating - Technical specifications and requirements EN 14037-3:2016, Prefabricated ceiling mounted radiant panels for space heating - Rating method and evalua-tion of radiant thermal output EN ISO/IEC 17025:2005, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025:2005) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 14037-1:2016 apply. 4 Testing of thermal output The test is carried out in a testing system, which consists of a closed booth with controlled temperatures of the inside 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 dif-ference between inlet and outlet (by weighing method). Other measurement methods shall guarantee in minimum the precision obtained by weighing method. All laboratories that make tests according this standard have to make comparable measurements with the other laboratories (according to Clause 6 of this standard). 5 Test booth 5.1 General The booth for testing ceiling mounted radiant panels shall be constructed in a way that all six surrounding surfaces can be chilled. 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 header; — Wall 2: the wall to the right of wall 1; — Wall 3: the wall opposite of wall 1; — Wall 4: the wall to the left of wall 1; SIST EN 14037-2:2017
EN 14037-2:2016 (E)
7 — Wall 5: the floor; — Wall 6: the ceiling.
Key C cooling circuit connection I inlet cooling water O outlet cooling water A cooling water accumulator P circulating pump H after heater 1.6 designation of the surrounding inside surfaces Figure 1 — Example of the hydraulic system of a test booth 5.2 Dimensions of the test booth The test booth has to have the following inside dimensions: — Length: (4 ± 0,02) m; — Width: (4 ± 0,02) m; SIST EN 14037-2:2017
EN 14037-2:2016 (E)
8 — Height: (3 ± 0,02) m. 5.3 Emissivity of the inside surrounding surfaces Walls, ceiling and floor shall have smooth inside surfaces covered with a coat of mat paint having a degree of emissivity of minimum 0,9. 5.4 Tightness of the test booth The test booth construction shall be sufficiently tight to prevent air infiltration. 5.5 Cooling system The cooling system is to be carried out in order, that the difference between the 6 chilled surrounding inside surfaces of the test booth and the average temperature of all 6 surfaces is not higher than 0,5 K. The temper-ature difference between inlet and outlet shall not be higher than 0,5 K. That condition shall be maintained at the tests for the determination of the characteristic equation. 5.6 Temperature measuring points 5.6.1 Reference room temperature The reference room temperature is measured at a height of 0,75 m above the floor of the test booth by means of a globe thermometer (see Figure 2). The measuring point is situated on the vertical axis through the central point of the ceiling mounted radiant panel. Dimensions in millimetres
Key 1 temperature measuring point Figure 2 — Globe thermometer Temperature sensor with blackened light metal sphere (diameter 150 mm, emissivity 0,9). The measuring point is arranged in the centre of the sphere. The penetration of the temperature sensor through the surface of the sphere runs horizontally and is air tight. The hollow sphere is attached to the temperature sensor. SIST EN 14037-2:2017
EN 14037-2:2016 (E)
9 5.6.2 Air temperature The 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 millimetres
Key 1 temperature measuring point H height of the measuring point Figure 3 — Example of a measuring point protected against radiation SIST EN 14037-2:2017
EN 14037-2:2016 (E)
10 Dimensions in meter
Key 1 air temperature measuring points 2 reference room temperature measuring point 3 ceiling mounted radiant panel 4 axes of air temperature measuring points Figure 4 — Arrangement of measuring points for the reference room temperature and for air temperature 5.6.3 Surface temperature of the inside surfaces The surface temperatures of the inside walls is calculated as average value of the inlet and outlet water tem-perature of each single surface wall. SIST EN 14037-2:2017
EN 14037-2:2016 (E)
11 6 Master Panels 6.1 Introduction The master panels which are part of the testing system consist of a model with a full direct heating surface with a width of 1 190 mm (master panel 1) and of a model with 3 tubes and a radiant sheet as indirect heat-ing surface with a width of 300 mm. 6.2 General The 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 Euro-pean Standard; b) to establish a common basis for all test installations to verify that the repeatability of test values in each test installation is within the limits set by this European Standard. To verify the reproducibility among test installations built according to this standard a single set of master panels constructed and verified according to this standard will be circulated among test installations to de-termine the relevant M,s and O,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 according to this stand-ard. This panel named “secondary set” shall be used to verify the repeatability of the test installation. 6.3 Determination of the value M,s of master panels (Primary set) The method of determination the value M,s of the master panel is contained in Annex A. 6.4 Construction details 6.4.1 Dimensions The main dimensions of the two master panels are given in the drawings Figures 5 to 10. 6.4.2 Material The master panels shall be constructed from the materials S235 JR. 6.4.3 Construction Master panels shall be constructed according to the specifications contained in this standard. 6.4.4 Dimensional verification Master panels shall be dimensionally verified according to the procedure contained in Annex A and a com-plete report as requested shall be prepared and kept available for any further check. SIST EN 14037-2:2017
EN 14037-2:2016 (E)
12 Dimensions in millimetres
Key a detail B (see Figure 6) 1 female screw socket 1” 2 L-profile 50 mm × 30 mm × 5 mm
length 1120 mm 3 rectangular tube 70 mm × 11 mm × 2 mm Figure 5 — Master panel 1, projection and main dimensions SIST EN 14037-2:2017
EN 14037-2:2016 (E)
13 Dimensions in millimetres
water circulation Key 1 welding Figure 6 — Master panel 1, details of headers, water circulation SIST EN 14037-2:2017
EN 14037-2:2016 (E)
14 Dimensions in millimetres
Key 1 radiant sheet s = 1,25 mm Detail X lead through of tube register through front sheet 2 front sheet s = 2,00 mm Detail Y bores in the front sheet for hole –welding (30 x) 3 tube register, rectangular tube 25 mm × 25 mm × 2 mm, EN 10219–2
4 rectangular tube 45 mm × 45 mm × 2,5 mm, for further infor-mation refer to EN 10219–2
5 eye for suspension welded Î ext. 32,5 mm; Î int. 22,5 mm; material Î 6 mm
6 header connection 1“ female
7 point welding front sheet / radiant sheet (at inner side)
Figure 7 — Master-panel 2, Isometric view SIST EN 14037-2:2017
EN 14037-2:2016 (E)
15 Dimensions in millimetres
Key 1 radiant sheet s = 1,25 mm 2 front sheet s = 2,00 mm 3 tube register, rectangular tube 25 mm × 25 mm × 2 mm, for further information refer to EN 10219–2 4 rectangular tube 45 mm × 45 mm × 2,5 mm, for further information refer to EN 10219–2 5 eye for suspension welded Î ext. 32,5 mm; Î int. 22,5 mm; material Î 6 mm 6 header connection 1“ female Figure 8 — Master-panel 2, projection and main dimensions SIST EN 14037-2:2017
EN 14037-2:2016 (E)
16 Dimensions in millimetres
a) Detail front sheet
c) detail radiant sheet connection tube
b) Detail connection tube Key 1 radiant sheet s = 1,25 mm 6
header connection 1“ female 2
front sheet s = 2,00 mm 7
socket welded 3
tube register, rectangular tube 25 mm × 25 mm × 2 mm, for fur-ther information refer to EN 10219–2 8
baffle 100 % tide welded 4
rectangular tube 45 mm × 45 mm × 2,5 mm, for further infor-mation refer to EN 10219–2 9
register tube welded 5
eye for suspension welded Î ext. 32,5 mm; Î int. 22,5 mm; materi-al Î 6 mm 10
point welding front sheet / radiant sheet Figure 9 — Master-panel 2, Details of radiant sheet, front sheet and connecting tube SIST EN 14037-2:2017
EN 14037-2:2016 (E)
17 Dimensions in millimetres
Figure 10 — Master-panel 2, Detail of radiant sheet 6.5 Verification of test installation, repeatability and reproducibility All test installations shall be verified for: — Constructional conformity: The laboratory shall state the conformity according to this standard. Any statement concerning thermal outputs shall be accompanied by a statement indicating the test condi-tions in which the stated outputs have been obtained; — Repeatability: The repeatability precision shall be within an allowed tolerance s0 when testing a single master panel 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. Us-ing this master panel, heat output tests shall be carried out in accordance with Clauses 7 and 8. The lat-est test for repeatability shall not have taken place longer than 6 month before a thermal heat output test. The repeatability shall be tested every 12 month in minimum. To prove the repeatability precision of a test laboratory, the results of five consecutive tests at the starting of the test installation shall be within a tolerance range s0 = 20 W according to 8.10; — Reproducibility: The reproducibility shall be proved by using the primary set of master panels. The test results (carried out in accordance with 8.10) shall be within the tolerance sm =
± 20 W of the M,s-value of each master panel. The test laboratories have to proof the reproducibility in periodical tests. 7 Test methods 7.1 General The aim of the thermal output test is to establish the standard characteristic equation of a ceiling mounted radiant panel by determining the related values of thermal output and temperature difference. Neither of SIST EN 14037-2:2017
EN 14037-2:2016 (E)
18 these quantities can be measured directly, but shall be calculated using the values of other measurable quan-tities, either directly or with additional information (calibration test, material properties table), by using mathematical relationships. Related to the evaluation of the standard characteristic equation, characteristics with deviating terms for the upper insulation (see 8.6), for the mass flow (see 8.9) or the temperature range (see 8.10) can be evaluated in addition to the standard output test. The results of the additional tests have to be documented in the test report of the standard measurement. 7.2 Weighing method The thermal output me 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 at a reference water pressure of 120 kPa: mem12()qhhΦ=− The water flow rate is measured directly by a calibrated flow-meter in a closed water circuit (see Figure 11) or calculated using the mass of the water m collected in a measuring vessel and the relevant time interval
(see EN 442-2). SIST EN 14037-2:2017
EN 14037-2:2016 (E)
19
Key 1 panel in the test booth 9 control unit for flow temperature 2 water circuit for measurement 10 container with overflow for calibration device 3 connection of the calibration device to the measuring circuit 11 recording- and evaluating instruments 4 circulating pump in the measuring circuit (controlled) 12 collecting- and draining installation for calibrating meas-urement 5 electric heating element in the measuring circuit for flow temperature control 13 heating device for calibrating measurement 6 mass flow measuring instrument 14 test booth 7 temperature measuring points 15 bypass 8 control unit for mass flow 16 water supply for calibration device Figure 11 — Basic diagram of test installation with continuous measurement of the mass flow (weighing method) and with a device for calibrating the measuring instrumentation 7.3 Measurement of the inlet and outlet temperatures The bulk temperature of the water at inlet and outlet shall be measured with a device which ensures a suffi-cient accuracy. This result can be reached for example by a measuring device according to Annex B. 7.4 Measurement of the control temperatures All temperatures which do not serve for the determination of the thermal output shall be measured with an accuracy of ± 0,1 K. 7.5 Uncertainty of the measured thermal output The maximum uncertainty in measuring the thermal output shall not exceed ± 10 W. 7.6 Air pressure The air pressure is measured with a tolerance of ± 2 hPa. SIST EN 14037-2:2017
EN 14037-2:2016 (E)
20 8 Carrying out the measurement 8.1 General The natural convection inside the test booth shall not be influenced by additional means. 8.2 Dimensions and construction of the test samples The active length of the ceiling mounted radiant panels without the connection components shall be within the range of 2,9 m to 3,1 m, the width shall be within a range of 0,3 m to 1,5 m. The construction length in-cluding
...
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.3UHVNXVQDAn der Decke frei abgehängte Heiz- und Kühlflächen für Wasser mit einer Temperatur unter 120 °C - Teil 2: Vorgefertigte Deckenstrahlplatten zur Raumheizung - Prüfverfahren für die WärmeleistungPanneaux rayonnants de chauffage et de rafraîchissement alimentés avec une eau à une température inférieure à 120 °C - Partie 2 : Méthode d’essai pour la détermination de la puissance thermique des panneaux rayonnants de plafond préfabriqués destinés au chauffage des locauxFree hanging heating and cooling surfaces for water with a temperature below 120°C - Part 2: Pre-fabricated ceiling mounted radiant panels for space heating - Test method for thermal output91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:FprEN 14037-2kSIST FprEN 14037-2:2015en,fr,de01-december-2015kSIST FprEN 14037-2:2015SLOVENSKI
STANDARD
kSIST FprEN 14037-2:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
FINAL DRAFT
FprEN 14037-2
September
t r s w ICS
{ sä s v rä s r Will supersede EN
s v r u yæ tã t r r uEnglish Version
Free hanging heating and cooling surfaces for water with a temperature below
s t r ¹C æ Part
tã Preæfabricated ceiling mounted radiant panels for space heating æ Test method for thermal output Panneaux rayonnants de chauffage et de rafraîchissement alimentés avec une eau à une température inférieure à
s t r
¹C æ Partie
t ã Méthode d 5essai pour la détermination de la puissance thermique des panneaux rayonnants de plafond préfabriqués destinés au chauffage des locaux
An der Decke frei abgehängte Heizæ und Kühlflächen für Wasser mit einer Temperatur unter
s t r
¹C æ Teil
tã Vorgefertigte Deckenstrahlplatten zur Raumheizung æ Prüfverfahren für die Wärmeleistung This draft European Standard is submitted to CEN members for unique acceptance procedureä It has been drawn up by the
If this draft becomes a European Standardá CEN members are bounwhich stipulate the conditions for giving this European Standard the status of a national standard without any alterationä
This draft European Standard was established by CEN in three ofer language made by translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
Recipients of this draft are invited to submitá with their commentsá notification of any relevant patent rights of which they are aware and to provide supporting documentationä
Warning ã This document is not a European Standardä It is distributed for review and commentsä It is subject to change without notice and shall not be referred to as a European Standardä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
9
t r s w CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä FprEN
s v r u yæ tã t r s w EkSIST FprEN 14037-2:2015
FprEN 14037-2:2015 (E)
2 Contents Page European foreword . 4 Introduction . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Testing of thermal output . 6 5 Test booth . 6 5.1 General . 6 5.2 Dimensions of the test booth . 7 5.3 Emissivity of the inside surrounding surfaces . 8 5.4 Tightness of the test booth. 8 5.5 Cooling system . 8 5.6 Temperature measuring points . 8 5.6.1 Reference room temperature . 8 5.6.2 Air temperature . 9 5.6.3 Surface temperature of the inside surfaces . 10 6 Master Panels . 11 6.1 Introduction . 11 6.2 General . 11 6.3 Determination of the value -M,s of master panels (Primary set) . 11 6.4 Construction details . 11 6.4.1 Dimensions . 11 6.4.2 Material . 11 6.4.3 Construction . 11 6.4.4 Dimensional verification . 11 6.5 Verification of test installation, repeatability and reproducibility . 17 7 Test methods . 17 7.1 General . 17 7.2 Weighing method . 18 7.3 Measurement of the inlet and outlet temperatures . 19 7.4 Measurement of the control temperatures . 19 7.5 Uncertainty of the measured thermal output . 19 7.6 Air pressure . 19 8 Carrying out the measurement . 19 8.1 General . 19 8.2 Dimensions and construction of the test samples . 19 8.3 Selection of the models to be tested for determining the thermal output of a type . 19 8.4 Manufacturer documents for the test samples . 19 8.5 Arrangement of the sample in the test booth . 20 8.6 Upper insulation of the test sample. 22 8.7 Connection of the test sample to the measuring circuit . 22 8.8 Tests . 22 8.9 Mass flow . 23 8.10 Test temperatures . 23 kSIST FprEN 14037-2:2015
FprEN 14037-2:2015 (E)
3 8.11 Steady-state conditions . 23 8.12 Correction due to the air pressure . 23 8.13 Result of measurement – Characteristic equation . 23 9 Test report . 24 9.1 General . 24 9.2 Data . 24 Annex A (normative)
Dimensional verification of master panels. 26 A.1 General . 26 A.2 Determination -M,s -values of the master panels (primary set) . 26 A.3 Dimensional verification and manufacturing certification for master panel 1 . 26 A.4 Dimensional verification and manufacturing certification for master panel 2 . 28 Annex B (informative)
Temperature measuring device. 31 Annex C (normative)
Least squares regression for a model . 32 Annex D (informative)
Specimen of the test report for heating capacity . 33 Bibliography . 36
kSIST FprEN 14037-2:2015
FprEN 14037-2:2015 (E)
4 European foreword This document (FprEN 14037-2:2015) has been prepared by Technical Committee CEN/TC 130 “Space heat-ing appliances without integral heat sources”, the secretariat of which is held by UNI. This document is currently submitted to the Unique Acceptance Procedure. This document will supersede EN 14037-2:2003. The main changes are: — the title has been changed, — the introduction has been changed, — the scope has been changed, — a new Master panel 2 has been added, — Clause 9 “Test Report” has been reworked. The European Standard EN 14037, Free hanging heating and cooling surfaces for water with a temperature below 120°C, consists of the following parts: — Part 1: Pre-fabricated ceiling mounted radiant panels for space heating - Technical specifications and re-quirements; — Part 2: Pre-fabricated ceiling mounted radiant panels for space heating - Test method for thermal output; — Part 3: Pre-fabricated ceiling mounted radiant panels for space heating - Rating method and evaluation of radiant thermal output; — Part 4: Pre-fabricated ceiling mounted radiant panels for space heating - Test method for cooling capacity; — Part 5: Open or closed heated ceiling surfaces - Test method for thermal output. kSIST FprEN 14037-2:2015
FprEN 14037-2:2015 (E)
5 Introduction This European Standard results from the recognition, that heated and chilled ceiling radiant panels falling into the field of application hereinafter stated are traded on the basis of their thermal output. For evaluating and comparing different heated and chilled ceiling surfaces it is therefore necessary to refer to a heating stipulated value. As installations with ceiling mounted radiant panels can also be used in practice for space cooling, it is nec-essary to have a test method for evaluating the cooling capacity. Installations with different free hanging heating and cooling surfaces need, for the use of space heating a test method for evaluating the heating out-put. The test method differs from the method for ceiling mounted radiant panels. kSIST FprEN 14037-2:2015
FprEN 14037-2:2015 (E)
6 1 Scope This European Standard describes the test method and the test installation for determining the thermal out-put of pre-fabricated ceiling mounted radiant panels according to the specifications of FprEN 14037-1:2015, 3.3.1. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indis-pensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. FprEN 14037-1:2015: Prefabricated ceiling mounted radiant panels for space heating - Technical specifica-tions and requirements FprEN 14037-3:2015, Prefabricated ceiling mounted radiant panels for space heating - Rating method and evaluation of radiant thermal output EN ISO/IEC 17025:2005, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025:2005) 3 Terms and definitions For the purposes of this document, the terms and definitions given in FprEN 14037-1:2015 apply. 4 Testing of thermal output The test is carried out in a testing system, which consists of a closed booth with controlled temperatures of the inside 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 dif-ference between inlet and outlet (by weighing method). Other measurement methods shall guarantee in minimum the precision obtained by weighing method. All laboratories that make tests according this standard have to make comparable measurements with the other laboratories (according to Clause 6 of this standard). 5 Test booth 5.1 General The booth for testing ceiling mounted radiant panels shall be constructed in a way that all six surrounding surfaces can be chilled. 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 header; — Wall 2: the wall to the right of wall 1; — Wall 3: the wall opposite of wall 1; — Wall 4: the wall to the left of wall 1; kSIST FprEN 14037-2:2015
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7 — Wall 5: the floor; — Wall 6: the ceiling.
Key C cooling circuit connection I inlet cooling water O outlet cooling water A cooling water accumulator P circulating pump H after heater 1.6 designation of the surrounding inside surfaces Figure 1 — Example of the hydraulic system of a test booth 5.2 Dimensions of the test booth The test booth has to have the following inside dimensions: — Length: (4 ± 0,02) m; kSIST FprEN 14037-2:2015
FprEN 14037-2:2015 (E)
8 — Width: (4 ± 0,02) m; — Height: (3 ± 0,02) m. 5.3 Emissivity of the inside surrounding surfaces Walls, ceiling and floor shall have smooth inside surfaces covered with a coat of mat paint having a degree of emissivity of minimum 0,9. 5.4 Tightness of the test booth The test booth construction shall be sufficiently tight to prevent air infiltration. 5.5 Cooling system The cooling system is to be carried out in order, that the difference between the 6 chilled surrounding inside surfaces of the test booth and the average temperature of all 6 surfaces is not higher than 0,5 K. The temper-ature difference between inlet and outlet shall not be higher than 0,5 K. That condition shall be maintained at the tests for the determination of the characteristic equation. 5.6 Temperature measuring points 5.6.1 Reference room temperature The reference room temperature is measured at a height of 0,75 m above the floor of the test booth by means of a globe thermometer (see Figure 2). The measuring point is situated on the vertical axis through the central point of the ceiling mounted radiant panel. Dimensions in millimetres
Key 1 temperature measuring point Figure 2 — Globe thermometer Temperature sensor with blackened light metal sphere (diameter 150 mm, emissivity 0,9). The measuring point is arranged in the centre of the sphere. The penetration of the temperature sensor through the surface of the sphere runs horizontally and is air tight. The hollow sphere is attached to the temperature sensor. kSIST FprEN 14037-2:2015
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9 5.6.2 Air temperature The 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 millimetres
Key 1 temperature measuring point H height of the measuring point Figure 3 — Example of a measuring point protected against radiation kSIST FprEN 14037-2:2015
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10 Dimensions in millimetres
Key 1 air temperature measuring points 2 reference room temperature measuring point 3 ceiling mounted radiant panel 4 axes of air temperature measuring points Figure 4 — Arrangement of measuring points for the reference room temperature and for air temperature 5.6.3 Surface temperature of the inside surfaces The surface temperatures of the inside walls is calculated as average value of the inlet and outlet water tem-perature of each single surface wall. kSIST FprEN 14037-2:2015
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11 6 Master Panels 6.1 Introduction The master panels which are part of the testing system consist of a model with a full direct heating surface with a width of 1 190 mm (master panel 1) and of a model with 3 tubes and a radiant sheet as indirect heat-ing surface with a width of 300 mm. 6.2 General The 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 Euro-pean Standard; b) to establish a common basis for all test installations to verify that the repeatability of test values in each test installation is within the limits set by this European Standard. To verify the reproducibility among test installations built according to this standard a single set of master panels constructed and verified according to this standard will be circulated among test installations to de-termine the relevant M,s and O,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 according to this stand-ard. This panel named “secondary set” shall be used to verify the repeatability of the test installation. 6.3 Determination of the value M,s of master panels (Primary set) The method of determination the value M,s of the master panel is contained in Annex A. 6.4 Construction details 6.4.1 Dimensions The main dimensions of the two master panels are given in the drawings Figures 5 to 10. 6.4.2 Material The master panels shall be constructed from the materials S235 JR. 6.4.3 Construction Master panels shall be constructed according to the specifications contained in this standard. 6.4.4 Dimensional verification Master panels shall be dimensionally verified according to the procedure contained in Annex A and a com-plete report as requested shall be prepared and kept available for any further check. kSIST FprEN 14037-2:2015
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12 Dimensions in millimetres
Key a detail B (see Figure 6) 1 female screw socket 1” 2 L-profile 50 × 30 × 5
length 1120 3 rectangular tube 70 × 11 × 2 Figure 5 — Master panel 1, projection and main dimensions kSIST FprEN 14037-2:2015
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13 Dimensions in millimetres
water circulation Key 1 welding Figure 6 — Master panel 1, details of headers, water circulation kSIST FprEN 14037-2:2015
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14 Dimensions in millimetres
Key 1 radiant sheet s = 1,25 mm Detail X lead through of tube register through front sheet 2 front sheet s = 2,00 mm Detail Y bores in the front sheet for hole –welding (30 x) 3 tube register, rectangular tube 25 × 25 × 2, EN 10219–2
4 rectangular tube 45 × 45 × 2,5, EN 10219–2
5 eye for suspension welded Î ext. 32,5 mm; Î int. 22,5 mm; material Î 6 mm
6 header connection 1“ female
7 point welding front sheet / radiant sheet (at inner side)
Figure 7 — Master-panel 2, Isometric view kSIST FprEN 14037-2:2015
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15 Dimensions in millimetres
Key 1 radiant sheet s = 1,25 mm 2 front sheet s = 2,00 mm 3 tube register, rectangular tuve 25 × 25 × 2, EN 10219–2 4 rectangular tube 45 × 45 × 2,5, EN 10219–2 5 eye for suspension welded Î ext. 32,5 mm; Î int. 22,5 mm; material Î 6 mm 6 header connection 1“ female Figure 8 — Master-panel 2, projection and main dimensions kSIST FprEN 14037-2:2015
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16 Dimensions in millimetres
a) Detail front sheet
c) detail radiant sheet connection tube
b) Detail connection tube Key 1 radiant sheet s = 1,25 mm 6
header connection 1“ female 2
front sheet s = 2,00 mm 7
socket welded 3
tube register, rectangular tube 25 × 25 × 2, EN 10219–2 8
baffle 100 % tide welded 4
rectangular tube 45 × 45 × 2,5, EN 10219–2 9
register tube welded 5
eye for suspension welded Î ext. 32,5 mm; Î int. 22,5 mm; materi-al Î 6 mm 10
point welding front sheet / radiant sheet Figure 9 — Master-panel 2, Details of radiant sheet, front sheet and connecting tube kSIST FprEN 14037-2:2015
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17 Dimensions in millimetres
Figure 10 — Master-panel 2, Detail of radiant sheet 6.5 Verification of test installation, repeatability and reproducibility All test installations shall be verified for: — Constructional conformity: The laboratory shall state the conformity according to this standard. Any statement concerning thermal outputs shall be accompanied by a statement indicating the test condi-tions in which the stated outputs have been obtained; — Repeatability: The repeatability precision shall be within an allowed tolerance s0 when testing a single master panel 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. Us-ing this master panel, heat output tests shall be carried out in accordance with Clauses 7 and 8. The lat-est test for repeatability shall not have taken place longer than 6 month before a thermal heat output test. The repeatability shall be tested every 12 month in minimum. To prove the repeatability precision of a test laboratory, the results of five consecutive tests at the starting of the test installation shall be within a tolerance range s0 = 20 W according to 8.10; — Reproducibility: The reproducibility shall be proved by using the primary set of master panels. The test results (carried out in accordance with 8.10) shall be within the tolerance sm =
± 20 W of the M,s-value of each master panel. The test laboratories have to proof the reproducibility in periodical tests. 7 Test methods 7.1 General The aim of the thermal output test is to establish the standard characteristic equation of a ceiling mounted radiant panel by determining the related values of thermal output and temperature difference. Neither of kSIST FprEN 14037-2:2015
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18 these quantities can be measured directly, but shall be calculated using the values of other measurable quan-tities, either directly or with additional information (calibration test, material properties table), by using mathematical relationships. Related to the evaluation of the standard characteristic equation, characteristics with deviating terms for the upper insulation (see 8.6), for the mass flow (see 8.9) or the temperature range (see 8.10) can be evaluated in addition to the standard output test. The results of the additional tests have to be documented in the test report of the standard measurement. 7.2 Weighing method The thermal output me 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 at a reference water pressure of 120 kPa: mem12()qhhΦ=− The water flow rate is measured directly by a calibrated flow-meter in a closed water circuit (see Figure 11) or calculated using the mass of the water m collected in a measuring vessel and the relevant time interval
(see EN 442-2).
Key 1 panel in the test booth 9 control unit for flow temperature 2 water circuit for measurement 10 container with overflow for calibration device 3 connection of the calibration device to the measuring circuit 11 recording- and evaluating instruments 4 circulating pump in the measuring circuit (controlled) 12 collecting- and draining installation for calibrating meas-urement 5 electric heating element in the measuring circuit for flow temperature control 13 heating device for calibrating measurement 6 mass flow measuring instrument 14 test booth 7 temperature measuring points 15 bypass 8 control unit for mass flow 16 water supply for calibration device kSIST FprEN 14037-2:2015
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19 Figure 11 — Basic diagram of test installation with continuous measurement of the mass flow (weighing method) and with a device for calibrating the measuring instrumentation 7.3 Measurement of the inlet and outlet temperatures The bulk temperature of the water at inlet and outlet shall be measured with a device which ensures a suffi-cient accuracy. This result can be reached for example by a measuring device according to Annex B. 7.4 Measurement of the control temperatures All temperatures which do not serve for the determination of the thermal output shall be measured with an accuracy of ± 0,1 K. 7.5 Uncertainty of the measured thermal output The maximum uncertainty in measuring the thermal output shall not exceed ± 10 W. 7.6 Air pressure The air pressure is measured with a tolerance of ± 2 hPa. 8 Carrying out the measurement 8.1 General The natural convection inside the test booth shall not be influenced by additional means. 8.2 Dimensions and construction of the test samples The active length of the ceiling mounted radiant panels without the connection components shall be within the range of 2,9 m to 3,1 m, the width shall be within a range of 0,3 m to 1,5 m. The construction length in-cluding the connection components shall be max. 3,5 m. No elements which could increase the heat output shall be added to the linkage between the active length and the collectors/headers. The tubes of the radiant ceiling panels shall be placed individually in series. The upper insulation is installed by the test laboratory according to 8.6. 8.3 Selection of the models to be tested for determining the thermal output of a type For determining the thermal output of a type the models with the smallest and largest width within the range according to 8.2 are to be tested at least. Interpolation of thermal output and exponent is allowed if the
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