Quantitative determination of potable coldwater consumption in German hospitals

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Quantitative determination of potable coldwater consumption in German hospitals

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Title: Quantitative determination of potable coldwater consumption in German hospitals
Author: González González, Alfonso; García Sanz-Calcedo, Justo; Rodríguez Salgado, David
Abstract: Las instalaciones de agua de un hospital son críticas para su función, pero el costo ambiental es alto. Este estudio cuantifica el consumo medio de agua fría potable (PCWC) en 19 hospitales pertenecientes al sistema de salud pública alemán. El área del piso del hospital varía de 3000 a 151,000 m2 y el número de camas de 45 a 1003 camas. Con este fin, se analizaron 60 declaraciones de Ecogestión y Esquema de Auditoría correspondientes al período 2005–2015 de acuerdo con su ubicación geográfica, días de grado de calefacción por año, días de grado de frío por año, categoría de hospital según el número de camas, superficie y número de trabajadores. Se descubrió que PCWC es mayor en los hospitales ubicados en áreas con mayores grados de calefacción por día por año. El potencial de ahorro anual promedio estimado fue de 8,600,000 m3 de agua equivalente a 15,000,000 de euros, 4000 MWh de energía y 30,000 toneladas de emisiones de CO2. Se concluyó que, para determinar el consumo medio anual de agua, es preferible utilizar el número de camas como indicador de referencia, y el valor del consumo como indicador de referencia se propuso en 103 m3 por cama por año.A hospital’s water installations are critical for its function, but the environmental cost is high. This study quantifies the mean potable cold water consumption (PCWC) in 19 hospitals belonging to the German Public Health System. The hospital floor area ranges from 3000 to 151,000 m2 and the number of beds from 45 to 1003 beds. To this end, 60 Eco-Management and Audit Scheme statements were analyzed corresponding to the period 2005–2015 in accordance with their geographic location, heating-degree-days per year, cold-degree-days per year, hospital category depending on the number of beds, floor area, and number of workers. It was found that PCWC is greater in hospitals located in areas with greater heating-degree-days per year. The potential mean annual savings estimated were 8,600,000 m3 of water equivalent to 15,000,000 euros, 4000 MWh energy, and 30,000 tons of CO2 emissions. It was concluded that, to determine the mean annual water consumption, it is preferable to use the number of beds as reference indicator, and the value of the consumption as reference indicator was proposed as 103 m3 per bed per year.
URI: http://hdl.handle.net/10662/9856
Date: 2018


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