Eficiencia Energética: Centros Educativos, Culturales y Deportivos | Energy Efficiency: Educational, Cultural & Sports Centres www.futurenergyweb.es 76 FuturEnergy | Abril April 2016 Por otro lado, se está manteniendo constante la temperatura del vaso en 27,5 ºC. Antes, cuando se abría la instalación, la temperatura del agua era inferior a la de consigna, 26,8-26,9 ºC. Los primeros días de funcionamiento del SediREC la temperatura del vaso grande subió a 28,2ºC, aunque después se decidió bajar a la de consigna. El ahorro en gas ha sido espectacular y sorprendente, con porcentajes de disminución en consumo de gas natural de más de un 50% Si bien se producen aumentos en las facturas de agua y electricidad, que comparando con el mes de mayo de 2013 ascienden respectivamente a 23 € y 103 €, se compensan sobradamente con el ahorro en la factura de gas natural: 2.137 €. En lo que respecta a la calidad del agua, el cloro combinado es muy bajo, en torno al 0,2-0,4. Se están haciendo menos lavados de filtros que antes de la colocación del SediREC, aprovechando el máximo de energía ya que el agua de limpieza de filtros es agua perdida, no puede pasar por la máquina. Conclusiones • Gestión de la renovación diaria del agua de forma 100% automática, con medición y registro de todos los parámetros: volumen, energía, temperaturas, potencias y rendimientos, reduciendo los trabajos de mantenimiento de la renovación de los vasos. • Rendimientos COP muy elevados, que pueden oscilar entre 8-10 en verano y 11-13 en invierno. Puede ser considerado como energía renovable a todos los efectos (subvenciones y certificaciones). • Reducción del coste energético de la renovación de agua, permitiendo el mantenimiento de una elevada calidad de agua, a un coste que puede ser siete veces inferior al sistema tradicional. • Reduce notablemente la dependencia de la gestión energética del agua de piscinas con relación a los combustibles que emiten CO2. Puede ser también susceptible de subvenciones en el plano de la protección medioambiental. • Vida operativa de al menos 20 años (sus condiciones de trabajo, focos frío y caliente, son muy estables). La inversión inicial puede ser recuperada antes de los dos o tres primeros años, periodo que se recortará notablemente y con una alta probabilidad de éxito, en el caso de optar a subvenciones en eficiencia energética, energías renovables y/o cuidado medioambiental. the energy lost (409.5 kWh) to the input water. For this reason, throughout May 2014 almost no back-up from the boilers was required to fully manage the energy of the large pool. In relation to the small pool, so that SediREC works far fewer hours in the day, the systemwas to require an approximate daily amount of 59.8 kWh to be able to maintain this pool’s water temperature. Costs comparison Applying the differences in consumption between May 2013 and May 2014, the installation of SediREC has represented a saving of €2,013/month. If the cost per m3 renewed is calculated over the months under study, taking into account the total costs of water, natural gas and electricity during the period, the swimming pools have gone from 3.76 €/m3 to 0.54 €/m3, in other words, one seventh of the cost. The user’s perspective Before SediREC, between 15 and 20 m3 of water per day used to be renewed in the large pool, slightly below the regulatory requirement in the Basque Country. This renovation was sufficient to maintain the hygiene-health quality parameters of the water and allow less energy to be consumed. As fromMay 2004, 25 m3/ day are being renewed in the large pool, just using the smaller of the two boilers installed on the premises for DHW, hydromassage and as a back-up for the small pool when required. However the pool temperature is being maintained at a constant 27.5ºC. Before, when the centre opened, the water temperature was lower than the set point temperature, 26.8 - 26.9ºC. The first days SediREC was in operation, the water temperature of the large pool rose to 28.2ºC despite later deciding to reduce the set point. The saving in gas has been both dramatic and surprisingwith reduced percentages in the consumption of natural gas of over 50%. Despite increasedwater and electricity bills that, compared withMay 2013, increased by €23 and €103 respectively, these amounts weremore than offset by the saving on the gas bill: €2,137. As regards water quality, the combined chlorine is very low at around 0.2-0.4. Less filter washes are being carried out than before installation of the SediREC, taking full advantage of the energy as the water used to clean the filters is lost water as it does not pass through the machine. Conclusions • 100% automated management of the daily water renovation, measurement and recording of every parameter: volume, energy, temperatures, output and efficiency, reducing maintenance work for pool water renovation. • Very high COP efficiency that can fluctuate between 8-10 in summer and 11-13 in winter. To all effects and purposes it can be considered as renewable energy (subsidies and certifications). • Reduced energy costs for water renovation, enabling high quality water to be maintained at a cost that could be seven times less than a traditional system. • Considerable reduction in dependence on the energy management of swimming pool water in relation to fuels that emit CO2. It could also be eligible for subsidies at environmental protection level. • Operational life of at least 20 years (it has very stable working conditions, cooling and heating sources). The initial investment can be recovered in two or three years, a period that is likely to be significantly reduced in the event that subsidies are obtained for energy efficiency, renewable energy and/or care for the environment. Equipo de mantenimiento de las piscinas Altzate de Lezo Maintenance team at the Altzate swimming pools Eduardo Cortina Responsable Ingenierías Zona Norte en SEDICAL, S.A.- Fabricante Head of Engineering, Northern Region at SEDICAL, S.A. - Manufacturer Iban Pérez Director Comercial INEQSPORT, S.L. - Distribuidor Oficial Commercial Director, INEQSPORT, S.L. - Official distributor
RkJQdWJsaXNoZXIy Njg1MjYx