TY - THES A1 - Knieschewski, Arno T1 - Energy efficiency rating of cooking fume extractors based on captured and filtered oil mist T2 - Schriftenreihe der Haushaltstechnik Bonn N2 - The energy efficiency rating on the European Union energy label for cooking fume extractors is based on measurements of the flow rate and static pressure difference within the duct behind the cooking fume extractor according to standard EN 61591:1997/A12:2015 and regulation (EU) No 65/2014. These measurements do not enable a definite conclusion about the cooking fume extractor’s air purification performance.Measurements which evaluate the air purification performance directly would be more valuable for consumers. In this thesis, a test method was developed that enables the energy efficiency rating of cooking fume extractors based on a direct measurement of the air purification by measuring the captured and filtered oil mist. The test method also enables the rating of cooking fume extractors that operate in recirculation mode, which is not possible using the current standard EN 61591:1997/A12:2015. The performance rating based on removed oil mist requires a reproducible generation of oil mist. Furthermore, the generated oil mist should resemble the oil mist from common cooking scenarios to give meaningful performance ratings. The oil mist from the grease absorption test according to standard EN 61591:1997/A12:2015 was taken as a reference oil mist for common cooking scenarios. A round robin test revealed that the oil mist generation with the grease absorption test from the standard is not reproducible enough for performance tests. The oil mist generation with atomizer nozzles was found more suitable for the reproducible generation of an oil mist. Two different atomizers were analyzed by measuring the properties of generated oil mist and by applying them in performance tests on cooking fume extractors. One “mantled atomizer” was bought from the market and one “open atomizer” was developed specifically for the test of cooking fume extractors. It was found that an oil mist with similar properties compared to the reference oil mist can be generated with the design of the open atomizer. The proposed test method using the open atomizer led to a better repeatability compared to the grease absorption tests according to the current standard and has the potential to improve the reproducibility. The results suggest that the proposed test method could be used for standardized testing which would enable more meaningful energy efficiency ratings and the rating of cooking fume extractors that operate in recirculation mode. N2 - Die Energieverbrauchskennzeichnung der Europäischen Union von Dunstabzugshauben basiert auf den Messungen des Volumenstroms und der statischen Druckdifferenz im Abluftrohr hinter der Dunstabzugshaube gemäß der Norm EN 61591:1997/A12:2015 und Verordnung (EU) No 65/2014. Diese Messungen erlauben keine eindeutigen Rückschlüsse auf die Luftreinigungsfunktion der Dunstabzugshaube. Eine Energieeffizienzbewertung, welche auf Messungen beruht, die die Luftreinigungsfunktion direkt messen, hätte einen größeren Nutzen für die Verbraucher. In dieser Arbeit wird eine Prüfmethode vorgestellt, welche die Energieeffizienzbewertung von Dunstabzugshauben durch eine direkte Messung der Luftreinigungsfunktion ermöglicht, indem die Masse eines eingefangenen und gefilterten Ölnebels ausgewertet wird. The Prüfmethode erlaubt außerdem die Bewertung von Umlufthauben, was mit der jetzigen Prüfnorm EN 61591:1997/A12:2015 nicht möglich ist. Die Leistungsbewertung bezogen auf entfernte Öltropfen benötigt eine reproduzierbare Ölnebelproduktion. Des Weiteren soll der produzierte Ölnebel dem Ölnebel von typischen Kochvorgängen ähneln, um eine aussagekräftige Energieverbrauchskennzeichnung zu ermöglichen. Der Ölnebel vom Fettabscheidegradtest der Norm EN 61591:1997/A12:2015 wurde als Referenz für typische Kochvorgänge genommen. Ein Ringversuch hat ergeben, dass die Ölnebelproduktion vom Fettabscheidegradtest nicht reproduzierbar genug ist, um die Leistung von Dunstabzugshauben zu bewerten. Eine zuverlässigere Ölnebelproduktion konnte mit Zerstäuberdüsen erreicht werden. Zwei verschiedene Zerstäuber wurden analysiert, indem der produzierte Ölnebel vermessen wurde und die Zerstäuber in Leistungsprüfungen von Dunstabzugshauben eingesetzt wurden. Ein „verhüllter Zerstäuber“ wurde gekauft und ein „offener Zerstäuber“ wurde speziell für den Test von Dunstabzugshauben entwickelt. Der offene Zerstäuber konnte einen Ölnebel erzeugen, welcher ähnliche Eigenschaften hatte wie der Referenzölnebel. Die vorgeschlagene Prüfmethode zeigte mit dem offenen Zerstäuber eine bessere Wiederholbarkeit als der Fettabscheidegradtest der derzeitigen Prüfnorm. Die Ergebnisse zeigen, dass die vorgeschlagene Prüfmethode als Prüfnorm genutzt werden könnte, um die Aussagekraft der Energieverbrauchskennzeichnung zu erhöhen und die Bewertung von Umlufthauben zu ermöglichen. KW - Energy label KW - Cooking fume extractor KW - Range hood KW - Oil mist KW - Removal efficiency PY - 2020 SN - 978-3-8440-7498-7 SP - 1 EP - 132 PB - Shaker Verlag CY - Düren, Deutschland AN - OPUS4-51087 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knieschewski, Arno A1 - Schlegel, Moritz-Caspar A1 - Akkerman, Floris A1 - Simo, Anne T1 - Evaluation of performance tests of range hoods used for the European energy efficiency label T2 - Proceedings of the 9th international conference on Energy Efficiency in Domestic Appliances and Lighting (EEDAL 2017) N2 - Several models of range hoods were tested by independent and accredited testing institutes. The results have been compared to the information declared by the manufacturer on the energy efficiency label and the product fiche. The measured electric power input of the lighting System and the measured grease absorption factor often differed significantly from the declared values. The reasons for these observations and the necessary steps to ensure accurate measurements and a meaningful EU energy efficiency label are elucidated. It is suggested that the ranges of the lighting efficiency classes are readjusted to fit the nowadays prevalent LED technology. Furthermore the tolerance in the regulation for the nominal electric power input of the lighting could be extended by a minimum absolute tolerance. The grease absorption test method may need a rework to achieve a satisfying accuracy. T2 - EEDAL 2017 CY - Irvine, California, USA DA - 13.09.2017 KW - Energy label KW - Range hood KW - Cooking fume extractor PY - 2018 SN - 978-92-79-77173-6 DO - https://doi.org/10.2760/68449 SN - 1018-5593 IS - Part III SP - 1065 EP - 1072 AN - OPUS4-43831 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knieschewski, Arno T1 - Berichterstattung – Nape Projekt N2 - Ergebnisse zur modifizierten Fettabscheidung und das weitere Vorgehen wurden vorgestellt. T2 - AK 513.2.5 Dunstabzugshauben Sitzung am 06.03.2018 CY - Frankfurt am Main, Germany DA - 06.03.2018 KW - Normung KW - Dunstabzugshauben KW - Fettabscheidegrad KW - Produktprüfungen PY - 2018 AN - OPUS4-46426 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knieschewski, Arno T1 - Cheaper compliance verification for the energy label of tumble dryers N2 - The energy label is a tool that informs the consumer about the energy consumption of certain appliances. The tumble dryer is one of these appliances that were considered relevant for receiving an energy label in the European Union. All classes and values on the energy label are stated by the manufacturers. In order to guarantee that the manufacturers do not cheat and appliances are labeled correctly, the stated values are checked by the market surveillance of each country in compliance verification tests. However, in the case of tumble dryers these compliance verification tests are very expensive and can only be realized for a small sample size out of models which are available on the market. The fewer compliance verification tests are carried out, the higher is the chance that there are incorrectly labeled appliances on the market. Therefore, a modification of the test standard for tumble dryers has been analyzed which would reduce the costs of a performance test by at least 11 %. T2 - WSED 2018 - World Sustainable Energy Days CY - Wels, Austria DA - 28.02.2018 KW - Tumble dryer KW - Energy label KW - Test standard PY - 2018 AN - OPUS4-47473 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knieschewski, Arno T1 - Unterstützung der Marktüberwachung N2 - Es werden Ergebnisse des NAPE Projekts bezüglich Wäschetrockner und Dunstabzugshauben vorgestellt. T2 - 6. Jour Fixe - Unterstützung der Marktüberwachung CY - Berlin, Germany DA - 23.03.2018 KW - NAPE KW - Wäschetrockner KW - Dunstabzugshauben PY - 2018 AN - OPUS4-47474 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knieschewski, Arno A1 - Schlegel, Moritz-Caspar A1 - Akkerman, Floris A1 - Simo, Anne T1 - Evaluation of performance tests of range hoods used for the European energy efficiency label N2 - The performance of 49 range hoods has been tested. The tests were done acoording to Regulation (EU) No 65/2014, that specifies the tests for the energy label of range hoods. The results are evaluated and solutions for problematic tests are suggested. T2 - EEDAL 2017 CY - Los Angeles, CA, USA DA - 13.09.2017 KW - Range hood KW - Energy label KW - Energy efficiency PY - 2017 AN - OPUS4-42232 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knieschewski, Arno T1 - Ergebnisse aus Ringversuch und Einzelprüfungen N2 - Die Ergebnisse vieler Produktprüfungen aus Ringversuch und Einzelprüfungen wurden vorgestellt. T2 - AK 513.2.5 Dunstabzugshauben Sitzung am 21.06.2017 CY - Frankfurt am Main, Germany DA - 21.06.2017 KW - Energie Label KW - Dunstabzugshauben KW - Produktprüfungen PY - 2017 AN - OPUS4-46424 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knieschewski, Arno T1 - How standards can better reflect consumer relevance on the example of range Hoods N2 - The performance test of range hoods can be improved by using an atomizer nozzle. T2 - ECEEE 2017 summer study on energy efficiency CY - Hyères, France DA - 29.05.2017 KW - Range hood KW - Energy efficiency PY - 2017 AN - OPUS4-41139 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knieschewski, Arno T1 - How standards can better reflect consumer relevance on the example of range hoods T2 - ECEEE SUMMER STUDY PROCEEDINGS N2 - The EU’s Ecodesign and Energy Labelling Regulations for domestic cooking appliances became legally binding in 2015. To determine the classes on the energy label, the regulations refer to the European Standard for performance measurements of range hoods EN 61591. The standard EN 61591 has been analysed and evaluated within the National Action Plan on Energy Efficiency (NAPE), a government programme that aims to increase the energy efficiency in Germany. The analysis revealed several drawbacks of the test standard. The standard used for the evaluation of range hoods is composed of methods for determining: (i) volumetric airflow, (ii) odour extraction, (iii) effectiveness of the lighting system and (iv) grease absorption. Currently, the grease absorption class is obtained by heating up oil and water in a pot, which creates vapour and splashes of grease. In this paper different alternative methods for the evaluation of the grease absorption efficiency will be discussed. In the proposed test method an atomizer nozzle is used. Consequently, the exact amount of atomized oil is known and the ratio of filtered to atomized oil can be measured. Thereby the proposed new method is able to take into account aerodynamic designs and leaks. Furthermore, it enables to alter the classification guideline of the energy label to give more significant and consumer relevant declarations. It allows manufacturers to develop innovative grease absorption methods with little airflow. This study revealed that it can be beneficial to review more of the existing standards in the light of improving their consumer relevance. T2 - ECEEE 2017 - Summer Study on energy efficiency CY - Hyères, France DA - 29.05.2017 KW - Range hood KW - Energy efficiency KW - Energy label PY - 2017 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-411425 SN - 978-91-983878-0-3 SN - 978-91-983878-1-0 SN - 2001-7960 SN - 1653-7025 SP - 1557 EP - 1561 AN - OPUS4-41142 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knieschewski, Arno T1 - Unterstützung der Marktüberwachung - Dunstabzugshauben N2 - Eine neue Methode zur Prüfung von Dunstabzugshauben wurde vorgestellt. T2 - AK 513.2.5 Dunstabzugshauben Sitzung CY - Bretten, Germany DA - 28.09.2016 KW - Normung KW - Energie Label KW - Dunstabzugshauben KW - Fettabscheidegrad PY - 2016 AN - OPUS4-46422 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -