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Article

Potential Savings in DHW Facilities through the Use of Solar Thermal Energy in the Hospitals of Extremadura (Spain)

Engineering Projects Area, Industrial Engineering School, University of Extremadura, 06007 Badajoz, Spain
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Int. J. Environ. Res. Public Health 2020, 17(8), 2658; https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17082658
Received: 24 March 2020 / Revised: 7 April 2020 / Accepted: 10 April 2020 / Published: 13 April 2020
(This article belongs to the Special Issue Indoor Air Quality and Health Outcomes in Energy-Efficient Buildings)
Hospitals need to prepare large amounts of domestic hot water (DHW) to develop their healthcare activity. The aim of this work was to analyse potential savings that can be achieved by installing solar thermal energy for production of domestic hot water in the hospitals of Extremadura (Spain). For this purpose, 25 hospitals between 533 and 87,118 m2 and between 15 and 529 beds were studied, three solar factor scenarios were simulated (0.70, 0.75 and 0.80) and the necessary investment and corresponding economic and environmental savings were calculated. Better economic results and energy ratios for 70% of solar contribution were obtained. These results show an average payback of 4.74 years (SD = 0.26) reaching 4.29 kWh/€ per year (SD = 0.20). Undertaking an investment of 674,423 €, 2,895,416 kWh/year of thermal energy could be generated with which to save both 145,933 € and 638 tons of CO2 per year. It was statistically demonstrated the priority of carrying out an installation with a solar factor of 70%, investing preferably in hospitals in Cáceres over those in Badajoz, especially in the public sector with more than 300 beds. These findings will provide hospital managers with useful information to make decisions on future investments. View Full-Text
Keywords: green buildings; energy and environmental costs; domestic hot water (DHW); healthcare engineering; solar thermal energy green buildings; energy and environmental costs; domestic hot water (DHW); healthcare engineering; solar thermal energy
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MDPI and ACS Style

Sánchez-Barroso, G.; González-Domínguez, J.; García-Sanz-Calcedo, J. Potential Savings in DHW Facilities through the Use of Solar Thermal Energy in the Hospitals of Extremadura (Spain). Int. J. Environ. Res. Public Health 2020, 17, 2658. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17082658

AMA Style

Sánchez-Barroso G, González-Domínguez J, García-Sanz-Calcedo J. Potential Savings in DHW Facilities through the Use of Solar Thermal Energy in the Hospitals of Extremadura (Spain). International Journal of Environmental Research and Public Health. 2020; 17(8):2658. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17082658

Chicago/Turabian Style

Sánchez-Barroso, Gonzalo, Jaime González-Domínguez, and Justo García-Sanz-Calcedo. 2020. "Potential Savings in DHW Facilities through the Use of Solar Thermal Energy in the Hospitals of Extremadura (Spain)" International Journal of Environmental Research and Public Health 17, no. 8: 2658. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17082658

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