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Telling the truth - Validity of energy efficiency values of heat pumps determined under laboratory conditions

  • 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 active-mode 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, theIn 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 active-mode 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.zeige mehrzeige weniger

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Metadaten
Autor*innen:Carsten Palkowski, Moritz-Caspar Schlegel, Floris Akkerman, Anne Simo
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Proceedings of the 9th international conference on Energy Efficiency in Domestic Appliances and Lighting (EEDAL '17)
Jahr der Erstveröffentlichung:2017
Herausgeber (Institution):Joint Research Centre (European Commission)
Jahrgang/Band:2017
Ausgabe/Heft:Part III
Erste Seite:1104
Letzte Seite:1112
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik
Freie Schlagwörter:Circumvention; Energy efficiency; Energy labelling; Heat pumps; Test method standard optimization
Veranstaltung:9th international conference on energy efficiency in domestic appliances and lighting (EEDAL '17)
Veranstaltungsort:Irvine, CA, USA
Beginndatum der Veranstaltung:13.09.2017
Enddatum der Veranstaltung:15.09.2017
DOI:10.2760/113534
ISSN:1831-9424
ISBN:978-92-79-77174-3
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:19.01.2018
Referierte Publikation:Nein
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