RT Journal Article T1 Seasonal efficiency of a brine-to-water heat pump with different control options according to ecodesign standards A1 Sieres Atienza, Jaime A1 Ortega Veiga, Ignacio A1 Cerdeira Pérez, Fernando A1 Álvarez da Costa, Estrella A1 Santos Navarro, Jose Manuel K1 3328.16 Transferencia de Calor K1 3309.95 Transmisión de Calor en Refrigeración y Calefacción K1 3308 Ingeniería y Tecnología del Medio Ambiente AB The seasonal performance of a heat pump indicates its average performance during the heating and/or cooling season, taking into account the different energy demands and their variability over time. Several European and international regulations and policies related with energy efficiency and the reduction of the carbon footprint of energy related products are affecting the heat pump industry. Among them, the ecodesign regulations impose minimum energy efficiency values for heat pumps, efficiencies that are based on the seasonal coefficient of performance. This work is focused on a domestic brine-to-water heat pump for low-temperature applications. The methodology to determine its seasonal coefficient of performance (SCOP) according to the European standard EN 14825 is explained and evaluated based on experimental results. The impact on the SCOP of using some technology options such as fixed or variable speed compressors, and fixed or variable outlet temperature operation is evaluated. Results show that between the lowest and highest efficient option, the SCOP can be improved by 26%. PB Clean Technologies SN 25718797 YR 2022 FD 2022-06-16 LK http://hdl.handle.net/11093/3614 UL http://hdl.handle.net/11093/3614 LA eng NO Clean Technologies, 4(2): 542-554 (2022) NO Agencia Estatal de Investigación | Ref. PID2019-104762RB-I00 DS Investigo RD 06-dic-2024