1. Workshop for Bureaux of Standards 27.2.2013 Bay Garden, St. Lucia EASTERN CARIBBEAN ENERGY LABELING PROJECT Christoph Menke Consultant CREDP/GIZ ECELP INTRODUCTION INTO TEST PROCEDURE FOR ENERGY CONSUMPTION OF REFRIGERATORS – IEC 59M/33/ CD:2012 – IEC 59 M / 35 /CD:2012 PROPOSED LIST OF EQUIPMENT FOR THE REFRIGERATOR TESTS

2.  Presentation and Discussion  Introduction into test procedure for energy consumption of Refrigerators  IEC 59M/33/ CD:2012 – IEC 59 M / 35 /CD:2012  Requirements for the implementation of the refrigerator energy consumption tests  Proposed list of equipment for the refrigerator tests  Required tasks by BoS to prepare for testing  Discussion OUTLINE OF PRESENTATION

3. Summary of the draft of DIN EN 62552 – (IEC 62552-1)  IEC 59M/33/ CD:2012 – IEC 59 M / 35 /CD:2012  Current draft is on for voting: http://www.iec.ch/dyn/www/f?p=103:52:0::::FSP_ORG_ID,FSP_DOC_ID, FSP_DOC_PIECE_ID:4248,140262,269669 http://www.iec.ch/dyn/www/f?p=103:52:0::::FSP_ORG_ID,FSP_DOC_ID, FSP_DOC_PIECE_ID:4248,140262,269669  Members can comment/vote and receive working copies of norm  DIN EN/IEC 62552 will replace the currently valid DIN EN 153, version 05.2006, and DIN EN ISO 15502, version 01.2006.  The BoS may purchase the draft/final English version, once members of IEC/ISO DIN EN 62552 – IEC 62552-1 The draft standard consists of three parts:  Part 1: Definitions, equipment, test room and setup  Part 2: Performance requirements in general and methods of testing  Part 3: Energy consumption and volume INTRODUCTION INTO TEST PROCEDURE FOR ENERGY CONSUMPTION OF REFRIGERATORS

4.  The energy consumption is determined in an unused (stable) state at an ambient temperature of 32°C and 16°C  Within max. 6 hours 3 blocks of 5 cycles are measured, with measuring temperature, humidity, energy consumption etc.  Then the values are averaged according to a procedure  Result is the energy consumption in Wh/day at 32°C and at 16°C  This provides a basis for regional determination of the temperature-related energy consumption of the refrigerator depending on the weighting of the regional environmental conditions.  The labelling of household refrigerating appliances in terms of energy consumption in the form of energy labels (A +++ to G) is then e.g. defined in the EU directive L 314/44 dated 30/11/2010. MEASURING OF ENERGY CONSUMPTION CURRENT DRAFT OF MEASURING CONCEPT FOR ENERGY CONSUMPTION

5.  Appendix A of part 1 contains information about the test room conditions and measuring equipment  Appendix D describes the exact arrangement of the sensors for temperature measurement.  Part 2 describes test methods to evaluate the performance of domestic refrigerators and similar appliances.  These include the storage test, the test of the cooling and freezing performance, and the testing of the automatic ice maker capacity, the rise in temperature and the condensation of water vapour.  We do not plan to do this part of the testing! SUMMARY OF THE APPENDIX OF DIN EN 62552 – (IEC 62552-1)

6.  Part 3 describes methods for determining the energy consumption.  Different situations and components are specifically considered:  Energy consumption in stable operation at an ambient temperature of 16 °C and 32 °C (appendix B).  Energy consumption during defrost and recovery period and during temperature changes (appendix C)  Defrost frequency (appendix D)  Special auxiliary equipment and its impact on energy consumption (appendix F)  Process efficiency (appendix G) SUMMARY OF THE DRAFT OF DIN EN 62552 – (IEC 62552-1)

7.  Electrical energy consumption: The energy consumption has to be measured with uncertainty of less than 2 %.  Air humidity: The humidity in the test room must be measured at a representative point.  Temperature: Temperatures must be recorded in equal measurement intervals not larger than 60 s. Unless specified differently, the expanded measurement uncertainty (K = 2) must not be higher than 0.5 K.  Time: Time measurements may not exceed an extended measurement uncertainty of 0.1% and are required in a resolution of 1 second or better.  Voltage and frequency: The voltage and frequency measurements may not exceed an extended measurement uncertainty (K = 2) of 0.5 %. Energy consumption data has to be measured at regular intervals. The interval may not exceed 1 minute. MEASUREMENT EQUIPMENT AND REQUIREMENTS REGARDING MEASUREMENT ACCURACY

8. Ambient temperatures  Sensors  Ambient temperatures are measured using copper or brass cylinders.  Temperature stability  a) The time average must be within ± 0.5 K of the ambient temp. b) The vertical ambient temperature gradient may not be higher than 1 K/m.  Temperature values  Tests shall be carried out under the following conditions of measured ambient temperature. For checking the storage temperatures:  +10 °C and +32 °C for class SN refrigerating appliances +16 °C and +32 °C for class N refrigerating appliances +16 °C und +38 °C for class ST refrigerating appliances +16 °C und +43 °C for class T refrigerating appliances  Details concerning the test are specified in part 2. GENERAL TESTING CONDITIONS

9.  Example: For refrigerating appliances rated from SN to T, tests are performed at +10°C and at +43°C  For checking the energy consumption: +16 °C and +32 °C for all refrigerating appliances  For checking the temperature rise time, the freezing time, the cooling time and the ice-making capacity of all refrigerating appliances, if applicable:  +25 °C for all classes of refrigerating appliances  Details concerning the test are specified in part 2. GENERAL TESTING CONDITIONS

10.  Electricity Supply  For testing purposes the total harmonic variation of the power supply may not exceed 3% and the variation must be quoted in the test report.  During the test the following has to be ensured for each recorded voltage sampling during each sampling period:  a) The time-averaged value must correspond the test voltage ± 1%.  During the test the following has to be ensured for each recorded current supply frequency:  c) The time-averaged value must correspond the test frequency ± 1%.  If the voltage variations and harmonic variations of the local power supply are too high (more than 3%), a UPS has to be used as a voltage stabilizer to meet the test conditions regarding the test room/test environment in accordance with part 1, section A 3.2. GENERAL TESTING CONDITIONS

11.  Humidity  Unless otherwise specified for certain performance and power consumption tests, relative humidity may not exceed 75 %.  It must be checked, whether this requirement is necessary for low ambient room temperature tests, because this may require dehumidification in the test room. GENERAL TESTING CONDITIONS

12. The following list shows the needed laboratory equipment taking into account the accuracy classes for the respective measured quantities required by DIN EN 62552. However, there are other important selection criteria, such as universal applicability, easy expandability and replace ability. The following components of the test bench are particularly cost- intensive:  power measuring device  temperature sensors  humidity sensors  data logging system  data logging software  notebook  test room LIST OF TECHNICAL SPECIFICATIONS OF LABORATORY EQUIPMENT

13.  The energy consumption must be measured with an allowed expanded uncertainty (K = 2) of less than 2%.  Besides the required accuracy class, the interfaces - such as D/A output and RS323 for an easy connection to the data logging - and a calibration certificate and test report for the instruments selected are important as well.  Recommendation: HIOKI power analyzer 3169-212,584.00 € 3 current clamps 9660681.00 € Total3,265.00 €  ASM Automation Sensorik, Messtechnik GmbH, Am Bleichbach 18-22, 85452 Moosinning E-Mail: info@asm-sensor.de, Internet: www.asm-sensor.deinfo@asm-sensor.dewww.asm-sensor.de Power measuring device

14.  Unless specified differently, the expanded measurement uncertainty (K = 2) must not be higher than 0.5 K.  Because of their high accuracy "PT100 1/3 DIN class B according to DIN EN 60751, 4-wire circuit" type temperature sensors should be used. Ensure a sufficient cable length. Recommendation:  20 sheathed resistance thermometers, 1x Pt100 1/3 DIN class B according to EN 60751, 4-wire, diameter 3.0 mm, sheath material: stainless steel, for temperatures from -50 to 500 ° C  20 Pt100, 1/3 DIN class B accord.DIN EN 60751 672.00 €  TMH Temperatur Messelemente Hettstedt GmbH, Marie-Curie-Ring 34, D-63477 Maintal Telefon: +49 (0) 6181 / 255818, Telefax: +49 (0) 6181 / 21118, info@temperaturmesstechnik.de info@temperaturmesstechnik.de Temperature sensors

15.  Optional for the test room, if the required relative humidity of 75% according to T1 A3.5  Robust sensor to measure relative humidity and temperature, solid stainless steel housing with connecting cable. Splash- proof cable gland. For control measurements and stationary use.  Range of application:-20°C to +80°C Measuring range:0 - 100% r.H. Accuracy:± 2% r.H. at 25°C, ± 0,1K maximum (NTC) Dimensions:Ø 12mm, length 160mm  Recommendation: Almemo humidity sensor FHA646E1C255.00 €  Ahlborn Mess- und Regelungstechnik GmbH, Eichenfeldstraße 1-3, 83607 Holzkirchen Telefon +49-8024-3007-0, Fax +49-8024-300710, email webmaster@ahlborn.comwebmaster@ahlborn.com Humidity sensors

16.  The selected data logging system should not only meet required accuracy but also feature a universal expandability.  It is recommended to acquire only one measuring devices for all measures, and just replace or add the corresponding sensors.  The measuring device should be able to save calibration data in order to carry out further measurements with highest accuracy. The most important technical parameters should include:  Fast high-resolution AD converter 24bit, 2.5 to 50 M/s  Galvanic isolation between measuring inputs and supply  Measuring functions: measured value, set to zero, possibility to compare current value with set – value, save maximum and minimum values with time and date  Average value over time or measuring points, limit monitoring, compensation of comparing inputs, temperature and atmospheric pressure compensation  Automatic linearization, multi-point calibration, and calibration data management  Device software update via interface  Conformance to the industry standard regarding EMC testing Data logging system

17.  Recommendation: ALMEMO 5690-2M09 standard installation in housing TG3 (19 "), graphic display, operation via soft keys and cursor, SD memory card (incl. USB card reader), Master measuring module, 9 galvanically isolated inputs, 6 free slots for additional cards for measuring switches ES5690Ux, (up to 99 channels) 2,190.00€  Measuring switch card (UA10 for ALMEMO single plug, 10 galvanically isolated inputs with sensor supply required space for 2, Connecting slots for all components ALMEMO 5690 without Option XM 1,150.00€  20 pc ALMEMO-connector ± 2,6 V DC 474.00€  1 pc ALMEMO-connector percentage (4..20 mA DC)27.00€  Total3,841.00€  Ahlborn Mess- und Regelungstechnik GmbH, Eichenfeldstraße 1-3, 83607 Holzkirchen Telefon +49-8024-3007-0, Fax +49-8024-300710, email webmaster@ahlborn.comwebmaster@ahlborn.com DATA LOGGING SYSTEM - 2

18. For data logging, the following characteristics are considered:  measure and control with Windows  configure operation and displays  easy preparation of measurement report  collecting data using different measurement hardware  expand with individually defined functions  real-time data evaluation  Recommendation: DASYLabFull DASYLab with all standard modules + 200 Layouts, Sequencer and Electr. Modules 1,795.00 €  Geitmann GmbH, Mühlenbergstr. 11–13, 58708 Menden Telefon: (+49) (0) 2373- 9383-0, Telefax: (+49) (0) 2373- 9383-23, Email: info@geitmann.deinfo@geitmann.de Data logging software

19.  Local ambient temperatures are measured at two points Ta1 and Ta2, located at the vertical and horizontal centreline of the refrigerating appliance and at a distance of 0.35 m from the refrigerating appliance.  To determine the temperature gradient, two additional sensors measure the ambient temperature in the test room.  They have to be placed at a height of 0.05 m and 2 m above the platform.  Thus, there are 4 temperature sensors and optional a humidity sensor needed.  For the test room a wooden light construction is possible.  There are no particular requirements for thermal insulation.  The test room temperature can be controlled by a water chiller in conjunction with an electric heater.  Attention should be paid to the air flow.  This is because a flow velocity of >0,25 m/s at the test instrument should be avoided. TEST ROOM

20.  4 temperature sensors 1 humidity sensor The following list of costs for the construction of a test room and its temperature control is only an estimate. It includes internal labour for design and construction.  Micro cooler 1750 watt +/- 3 Capprox. 1,600.00 €  Service water tankapprox. 400.00 €  Electrical heating element, control, pipingapprox. 1,500.00 €  Air duct, outlets, canal systemapprox. 500.00 €  Test room material & construction costsapprox. 2,000.00 €  Total approx. 6,000.00 €  In case of integrating a humidity control in the test room, costs will increase considerably.  If a UPS will be necessary, this would result in additional costs of approximately 500 €. COSTS FOR TEST ROOM WITHOUT HUMIDITY CONTROL:

21.  List of total costs 3.1 Power meter3,265.00 € 3.2 Temperature sensors672.00 € 3.3 Humidity sensors255.00 € 3.4 Data logging system3,841.00€ 3.5 Data logging software1,795.00 € 3.6 Notebook550.00 € 3.7 Test room6,000.00 € Total16.378,00 € Plus, if required, UPS and dehumidification

22.  What kind of data logger software is used here?  Is Dasylab software known to BoS?  Do we want to control the humidity?  Do we need a UPS?  Who can build the test room? Including air condition and electrical heater, micro cooler and water tank, air ducts?  What we need is a room, that can maintain 16 and 32 degree relative stable over time of measurement.  If we can not maintain 16 and 32 degrees and max. humidity then we still can do measurements of refrigerators and compare the results, as long as they are done under comparable conditions… but the main purpose is to establish figures of energy consumption of refrigerators and publish the results QUESTIONS

23.  Be willing to do random testing of household refrigerators and publish the results, use it as base to issue labels in absence a refrigerator does not have a label once imported.  Order IEC Norm 62552 part 1 – 3 as draft or final as IEC/ISO member  Read it and understand the measuring procedure  If not clear ask questions by Email to ECECP  Once equipment is procured and shipped, take it into operation  We will do a joint workshop at one place in OECS in late summer, where the participating BoS will do jointly do a energy consumption test of fridges REQUIREMENTS FOR THE IMPLEMENTATION OF THE REFRIGERATOR ENERGY CONSUMPTION TESTS

24. For more information please contact: [Name and contact details of consultant] http://www.credp-giz.org http://ecelp.org THANK YOU VERY MUCH FOR YOUR ATTENTION