2026-05-05T20:50:27Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/523232025-02-25T08:57:02Zcom_10324_1170com_10324_931com_10324_894col_10324_1367

Rey Martínez, Francisco Javier San José Alonso, Julio Francisco Velasco Gómez, Eloy Tejero González, Ana Esquivias Fernández, Paula Matilde Rey Hernández, Javier María 2022-03-09T10:48:34Z 2022-03-09T10:48:34Z 2020 Energies, 2020, vol. 13, n. 9, 2218 1996-1073 https://uvadoc.uva.es/handle/10324/52323 10.3390/en13092218 Producción Científica The high energy consumption of cooling systems justifies the need for strategies to increase the efficiency of the facilities, in order to reduce the related CO2 emissions. This study aims to improve the performance and reduce the energy consumption of an 8.6 MW air cooled chiller. This installed capacity is biased due to the screw compressors, of 2.98 Energy Efficiency Ratio (EER) at full load (characteristics provided by the manufacturer). The chiller unit has been modified by placing evaporating cooling pads before the condensing coils. The chiller has been monitored for three months, recording over 544,322 measurements (5 min-step data), with and without the evaporative cooling pads, to assess the performance. Data comparison has been done by selecting two days (with and without evaporative panels) with the same health care load and temperatures. Implementing the proposed strategy yields an improvement in the European Seasonal Energy Efficiency Ratio (ESEER) from 3.69 to 4.83, while the Total Equivalent Warming Impact (TEWI) decreases about 1000 tCO2. Energy savings of up to 32.6 MWh result into a payback period lower than 2 years. Junta de Castilla y León (project VA272P18) application/pdf eng MDPI info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ © 2020 The Authors Attribution-NonCommercial-NoDerivatives 4.0 Internacional Air cooled chillers Enfriadores de aire Adiabatic condensers Condensadores adiabáticos Carbon dioxide - Emissions Dioxido de carbono - Emisiones Energy savings Ahorro energético Energy consumption reduction of a chiller plant by adding evaporative pads to decrease condensation temperature info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.mdpi.com/1996-1073/13/9/2218 SI