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Optimization of Energy and Water Management of Swimming Pools. A case study in Thessaloniki, Greece

机译：优化游泳池的能源和水管理。塞萨洛尼基，希腊案例研究

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Improvement of living standards and increased demand for consumer goods have as consequence the increase of energy and water consumption. At the same time, increasing awareness of the respective environmental impact has prompted the European Union (E.U.) to issue a list of Directives for the Member States that promote conservation of natural resources. Moreover, this environment-friendly attitude may alleviate the impact of the economic crisis, since energy and water savings result in saving money. In the present paper, some ways to improve sustainability of swimming pools through reducing energy and water consumption, are analyzed and compared. An open municipal swimming pool in Thessaloniki, Greece, is used as case study. Research is focused on heating energy, where more savings can be achieved. Especially, installation of solar thermal collectors, geothermal heat pumps, or photovoltaic panels and construction of a light roof are analyzed. Moreover, some recommendations are made, concerning the general improvement of a swimming pool and its surroundings. The goal is to reduce the operation expenses of the pool and, if possible, to increase the income, so that it can be economically viable throughout the year. Finally, several suggestions are evaluated by means of the RETScreen software, in order to find out which investments are reasonable. For the evaluation a Cost-Benefit Analysis has been carried out, using the Net Present Value criterion, the Internal Rate of Return criterion and the Benefit-Cost ratio. Finally, a SWOT analysis is performed and a policy is suggested, which should be followed by the administration of the swimming pool.
机译：改善生活水平和对消费品的需求增加，因此能源和耗水量增加。与此同时，提高对各自的环境影响的认识促使欧盟（E.U.）发布促进保护自然资源保护的会员国的指令清单。此外，这种环境友好的态度可能会缓解经济危机的影响，因为能源和节水导致省钱。在本文中，分析了通过降低能量和耗水量来提高游泳池可持续性的一些方法，并进行比较。在希腊塞萨洛尼基的一个公开的市政游泳池被用作案例研究。研究专注于加热能量，可以实现更多的节省。特别是，分析了太阳能热收集器，地热热泵或光伏电池板的安装以及光屋顶的构造。此外，关于游泳池及其周围环境的一般改进，制定了一些建议。目标是减少游泳池的运营费用，如果可能的话，增加收入，以便全年在经济上可行。最后，通过RETSCEEN软件评估了几个建议，以了解哪些投资是合理的。对于评估，使用净现值标准，返回标准的内部率和益处成本比进行了成本效益分析。最后，进行了扫描分析，并建议了一个政策，然后应应于游泳池管理。

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