TY - CONF A1 - Palkowski, Carsten T1 - Dynamic Test Method - an Update N2 - An update about the dynamic test method for the determination of the seasonal performance of heat pumps given at the CEN/TC 113/WG 7 meeting. T2 - Meeting of CEN/TC 113/WG 7 CY - Courbevoie, France DA - 14.01.2020 KW - Heat pump KW - Dynamic test method KW - Seasonal performance KW - Coefficient of performance PY - 2020 AN - OPUS4-50579 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Palkowski, Carsten T1 - Test methods for air conditioners N2 - Comparison of test methods for air conditioners that are currently discussed in standardization. The limitations of the current standard are shown and different options for the further development of the standard are presented T2 - Arbeitsgruppensitzung des Fachverbands Gebäude-Klima CY - Online meeting DA - 28.05.2020 KW - air conditioner KW - test method KW - Load-based testing KW - energy label PY - 2020 AN - OPUS4-50829 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Palkowski, Carsten T1 - Test methods for heat pumps N2 - Comparison of different test methods for the determination of the seasonal performance of heat pumps: 1) The current test standard EN14825, 2) the compensation test method and 3) the dynamic test method. T2 - Impact Assessment / Consultation Space and Water Heaters WG2 Testing CY - Online meeting DA - 02.04.2020 KW - Heat pump KW - Energy label KW - Seasonal performance KW - Compensation method KW - Dynamic method PY - 2020 AN - OPUS4-50713 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Palkowski, Carsten T1 - Technical Meeting BAM RRT for Heat Pumps N2 - Kickoff meeting for the BAM round robin test for load-based heat pump testing T2 - Kickoff meeting BAM RRT for heat pumps CY - Online meeting DA - 26.03.2020 KW - Heat pump KW - Round robin test KW - Load-based testing KW - Compensation method KW - Energy efficiency PY - 2020 AN - OPUS4-50715 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Palkowski, Carsten T1 - Technical Meeting BAM RRT for Air Conditioner N2 - Kickoff meeting for the BAM round robin test for load-based air conditioner testing. T2 - Kickoff meeting BAM RRT for air conditioner CY - Online meeting DA - 26.03.2020 KW - Air conditioner KW - Round robin test KW - Load-based testing KW - Compensation method KW - Energy efficiency PY - 2020 AN - OPUS4-50716 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Palkowski, Carsten T1 - BAM Round Robin Test for Heat Pumps and Air Conditioners N2 - Preliminary results of the BAM RRTs are given in this presentation. T2 - VHK Meeting CY - Online meeting DA - 11.11.2020 KW - Heat Pumps KW - Air Conditioners KW - Round Robin Test KW - Load-Based Test Method KW - Energy Label PY - 2020 AN - OPUS4-51969 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Palkowski, Carsten T1 - How cool? - Energy label for air conditioners and possibilities for circumvention N2 - In this study, the test method EN 14825 for testing air conditioners is validated by verifying the sensitivity of the seasonal energy efficiency ratio SEER (declared on the energy efficiency label) in relation to the nominal cooling capacity Pdesign. Therefore, the two major parts of the test method, the measurement part and the calculation part, were investigated. Measurements were conducted on several single-split units. The calculation part was subjected to a sensitivity analysis in order to identify the properties of an air conditioner which have a strong influence on the SEER. The analysis revealed that the measurement procedure delivers reproducible results. However, the energy consumption in special operating states, the duration in active-mode and seasonal performance values in active mode (SEERon) significantly affect the sensitivity of the SEER. Especially assumption of short operating times for a cooling active mode leads to large changes in the SEER with varying Pdesign. In addition, the range of power of Pdesign turned out to have an increasing impact on the SEER with decreasing Pdesign. For Pdesign values ≤10 kW, which is the most popular type of ACs in the EU, the sensitivity of the SEER increases tremendously. Especially the determination of the SEER for devices with short operating times in cooling active-mode (350 h) and low values for Pdesign (≤10 kW) cannot be reproduced anymore. In consequence, manufacturer could use the sensitivity of the SEER on Pdesign to artificially “increase” the energy efficiency of their air conditioner for the Energy label about 10 %. T2 - World Sustainable Energy Days CY - Wels, Austria DA - 28.02.2018 KW - Air Conditioner KW - Energy Efficiency KW - Circumvention KW - Energy Label PY - 2018 AN - OPUS4-47480 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Palkowski, Carsten T1 - Telling the truth - Validity of energy efficiency values of heat pumps determined under laboratory conditions N2 - In this study, the test method EN 14825 for testing heat pumps is validated by verifying the sensitivity of the seasonal space heating energy efficiency ηs, (declared on the energy efficiency label) in relation to the nominal heating capacity Pdesign. Therefore, the two major parts of the test method, the measurement part and the calculation part, were investigated. The calculation part was subjected to a sensitivity analysis in order to identify the properties of a heat pump which have a strong influence on ηs. The analysis revealed that the energy consumption in special operating states, the duration in activemode and seasonal performance values in active-mode (SCOPon) significantly affect the sensitivity of ηs. Especially short operating times, in which the heat pump is in active-mode, lead to large changes in ηs with varying Pdesign. In addition, the range of power of Pdesign turned out to have an increasing Impact on ηs with decreasing Pdesign. For Pdesign values ≤10 kW, the sensitivity of ηs increases tremendously. Especially the determination of the ηs for devices with short operating times in active-mode (1400 h) and low values for Pdesign (≤10 kW) cannot be reproduced anymore. T2 - 9th International Conference on Energy Efficiency in Domestic Appliances and Lighting (EEDAL 2017) CY - Irvine, CA, USA DA - 13.09.2017 KW - Energy labelling KW - Heat pumps KW - Air conditioner KW - Test method standard optimization KW - Circumvention PY - 2017 AN - OPUS4-42110 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Palkowski, Carsten T1 - Technical and economical evaluation of energy efficiency testing for heat pumps N2 - In order to increase the total amount of energy savings to be reached in 2020 and 2050 the German government launched a number of initiatives. One of the associated projects aims to support market surveillance authorities in the field of Ecodesign and Energy Labelling, thereby increasing confidence in these instruments. The surveillance of heating appliances is of great importance as the energy consumed by space heaters accounts for a significant share of the total energy demand in the European Union. In this study heat pumps are analyzed as a high efficiency technology and prospective candidate for large energy savings. It is focused on both validating the current measurement standards for heat pumps and further developing these methods for the benefit of market surveillance authorities. The test method standards, EN 14511 and EN 14825, for testing heat pumps regarding their performance and energy efficiency are validated by conducting round robin tests in independent and accredited test laboratories. Based on these tests the reproducibility and repeatability of the standardized test methods and the laboratories in Europe are assessed. Identifying deficiencies in the methods is a fundamental step towards a sustained improvement process. Optimization proposals will be developed based on these fundamental investigations and brought to the attention of standardization bodies. It was figured out that the currently used test methods exhibit high complexity, high financial effort and reveal significant deviations of testing results depending on whether they were determined under laboratory or field test conditions. New testing and calculation methodologies are developed to simplify the process with the aim to increase the accuracy and affordability of the energy efficiency testing of heat pumps. T2 - 9th Asia-Pacific Power and Energy Engineering Conference (APPEEC 2017) CY - Chengdu, China DA - 15.04.17 KW - Heat pump KW - Energy efficiency KW - Test method standard optimization KW - Energy labelling KW - Climate change PY - 2017 AN - OPUS4-40800 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Palkowski, Carsten T1 - Dynamic Test Method for Heat Pumps N2 - Vorstellung der Dynamischen Wärmepumpenprüfung beim CEN/TC 113/WG 7 N2 - Presentation of the dynamic test method for the determination of the seasonal performance of heat pumps at CEN/TC 113/WG 7. T2 - Meeting of CEN/TC 113/WG 7 CY - Stockholm, Sweden DA - 23.04.2019 KW - Heat pump KW - Energy label KW - Seasonal performance KW - Coefficient of performance PY - 2019 AN - OPUS4-48308 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -