Seasonal Efficiency of a Brine-to-Water Heat Pump with Different Control Options according to Ecodesign Standards

Jaime Sieres, Ignacio Ortega, Fernando Cerdeira, Estrella Álvarez and José M. Santos
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Jaime Sieres: Área de Máquinas y Motores Térmicos, Escuela de Ingeniería Industrial, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain
Ignacio Ortega: Área de Máquinas y Motores Térmicos, Escuela de Ingeniería Industrial, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain
Fernando Cerdeira: Área de Máquinas y Motores Térmicos, Escuela de Ingeniería Industrial, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain
Estrella Álvarez: Chemical Engineering Department, Escuela de Ingeniería Industrial, University of Vigo, Campus Lagoas-Marcosende 9, 36310 Vigo, Spain
José M. Santos: Área de Máquinas y Motores Térmicos, Escuela de Ingeniería Industrial, University of Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain

Clean Technol., 2022, vol. 4, issue 2, 1-13

Abstract: 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%.

Keywords: heat pump; seasonal efficiency; SCOP; R410A; experimental results; ecodesign (search for similar items in EconPapers)
JEL-codes: Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2022
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