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Increasing water and energy efficiency in university buildings: a case study

  • Local, Regional and Global Best Practice for Water
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Abstract

Nowadays, humanity is consuming unsustainably the planet’s resources. In the scope of energy resource consumption, e.g., the intense use of fossil fuels has contributed to the acceleration of climate changes on the planet, and the overriding need to increase energy efficiency in all sectors is now widely recognized, aiming to reduce greenhouse gases (GHG) emissions by 69% in 2030. Largely due to climate changes, water has also become a critical resource on the planet and hydric stress risk will rise significantly in the coming decades. Accordingly, several countries will have to apply measures to increase water efficiency in all sectors, including at the building level. These measures, in addition to reducing water consumption, will contribute to the increase of energy efficiency and to the decrease of GHG emissions, especially of CO2. Therefore, the nexus water energy in buildings is relevant because the application of water efficiency measures can result in a significant contribution to improve buildings’ energy efficiency and the urban water cycle (namely in abstraction, treatment, and pumping). For Mediterranean climate, there are few studies to assess the extent and impact of this nexus. This study presents the assessment of water-energy nexus performed in a university building located in a mainland Portugal central region. The main goals are to present the results of the water and energy efficiency measures implemented and to assess the consequent reduction of water, above 37%, and energy (30%) consumption, obtained because of the application of water-efficient devices and highly efficient light systems in the building. The water efficiency increase at the building level represents at the urban level an energy saving in the water supply system of 406 kWh/year, nearly 0.5% of the building energy consumption, with a consequent increase in the energy efficiency and in the reduction of GHG emissions. Complementarily, other energy-efficient measures were implemented to reduce the energy consumption. As the building under study has a small demand of domestic hot water with no hydro pressure pumps and has a small water-energy nexus, it was concluded that the significant reduction of the building energy consumption did not influence the indoor comfort.

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References

  • Adeyeye, K. (2014). Water efficiency in buildings: theory and practice. John Wiley & Sons Inc, ISBN: 978-1-118-45657-6

  • Assaf S, Nour M (2015) Potential of energy and water efficiency improvement in Abu Dhabi’s building sector - analysis of Estidama pearl rating system. Renew Energy 82:100–107

    Article  Google Scholar 

  • Benromdhane S (2015) Energy efficiency through integrated environmental management. Environ Sci Pollut Res 22:7973–7979. https://doi.org/10.1007/s11356-015-4424-8

    Article  Google Scholar 

  • Bertone E, Stewart R, Sahin O, Alam M, Zou P, Buntine C, Marshall C (2018) Guidelines, barriers and strategies for energy and water retrofits of public buildings. J Clean Prod 174:1064–1078

    Article  Google Scholar 

  • CEN (2007). Indoor environmental input parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics. Brussels, Belgium, August

  • CEN (2011). EN 12464-1. Light and lighting of work places: part 1 indoor work places. Brussels, Belgium

  • Hamiche A, Stambouli A, Samir F (2016) A review of the water-energy nexus. Renew Sust Energ Rev 65:319–331

    Article  Google Scholar 

  • Iacomussi P, Radis M, Rossi G (2015) Visual comfort with LED lighting. Energy Procedia 78:729–734

    Article  Google Scholar 

  • Jingyu L, Wen Z, Xiaodong C (2016) Fuzzy logic controller for energy savings in a smart LED lighting system considering lighting comfort and daylight. Energy Build 127:95–104

    Article  Google Scholar 

  • Kenway S, Lant P, Priestley A, Daniels P (2011) The connection between water and energy in cities – a review. Water Sci Technol 63(9):1983–1990

    Article  CAS  Google Scholar 

  • Kibert, C. (2016). Sustainable construction. John Wiley & Sons inc. ISBN: 978-1-119-05517-4

  • Mantravadi B, Kishore R, Anbu SP, Kalai B (2015) Power generation by high head water in a building using micro hydro turbine-a greener approach. Environ Sci Pollut Res Int 23. https://doi.org/10.1007/s11356-015-5317-6

    Article  Google Scholar 

  • Mariano, N., Rodrigues, F., Silva-Afonso, A. (2011). Water efficiency in buildings: a contribute to energy efficiency. In: CIB W062 (eds.): Water supply and drainage for buildings. Proc. 37th Symposium CIB W062, Aveiro, Portugal, 25–28 September

  • Matos C, Sampaio A, Bentes I (2010) Possibilities of greywater reuse in non-potable in situ urban applications, according with its quality and quantity. WSEAS Trans Environ Dev 7(6):499–508 ISSN: 1790-5079

    Google Scholar 

  • Park H, Kim W (2018) Water industry: water-energy-health nexus. Environ Sci Pollut Res 26:1013–1014. https://doi.org/10.1007/s11356-018-3529-2

    Article  Google Scholar 

  • Pelli T, Hitz H (2000) Energy indicators and savings in water supply. J Am Water Works Assoc 92:55–62

    Article  CAS  Google Scholar 

  • Pimentel-Rodrigues, C., Silva-Afonso, A. (2009). Water efficiency of products. Outcome of applying a certification and labelling system in Portugal, In: CIB W062 (eds.): Water supply and drainage for buildings. Proc. 35th Symposium CIB W062, Dusseldorf, Germany, 7-9 September

  • Pinto A, Rodrigues F, Mota A (2017a) Geothermal contribution on southern Europe climate for energy efficiency of university buildings. Winter season. Energy Procedia 134:181–191

    Article  Google Scholar 

  • Pinto, A.; Silva Afonso, A.; Silva Santos, A.; Pimentel Rodrigues, C.; Rodrigues, F. (2017b). Nexus water energy for hotel sector efficiency. Energy Procedia, vol. 111, pag 215–225

    Article  Google Scholar 

  • Portilla, C., Gomes, R., Silva-Afonso, A., Pimentel-Rodrigues, C., Tobatr, F. (2018). Water efficiency evaluation model in non-residential buildings. Case study: university buildings of Quito - Ecuador, In Anais do CIB W062 2018 – Water supply and drainage for buildings. Ponta Delgada, Açores, Portugal, 28 to 30 de August

  • Silva-Afonso, A. (2014). The bathroom of the future: its contribution to sustainability, In: CIB W062 (eds.): Water supply and drainage for buildings. Proc. 40th Symposium CIB W062, São Paulo, Brazil, 7-10 September

  • Silva-Afonso, A., Abrantes, V. (2008). Water-efficiency in the housing sector. The implementation of certification and labelling measures in Portugal, In: IAHS (eds.): World congress on housing science. Proc. XXXVI IAHS – National Housing Programs/New Visions, Kolkata, India, 3–7 November

  • Silva-Afonso, A., Pimentel-Rodrigues, C. (2010). Water efficiency of products. The Portuguese system of certification and labelling. J AWWA (American Water Works Association) Volume 102, n° 2 (February 2010), 52–56

  • Silva-Afonso A, Pimentel-Rodrigues C (2011) The importance of water efficiency in buildings in Mediterranean countries; The Portuguese experience. Int Jour of Syst Appl Eng & Devel 5(2):17–24

  • Silva-Afonso, A., Pimentel-Rodrigues, C. (2013). Measures of water efficiency in buildings. Comfort and performance issues, XXXIX IAHS – World congress on housing science (Changing needs, adaptive buildings, smart cities), Milano, Italy, 17 - 20 September

  • Silva-Afonso A, Rodrigues F, Pimentel-Rodrigues C (2011) Water efficiency in buildings: assessment of its impact on energy efficiency and reducing GHG emissions, Recent researches in energy & environment (6th IASME/WSEAS international conference on energy & environment – EE’11). WSEAS Press, Cambridge ISSN 1792-8230. ISBN 978-960-474-274-5. 191-195

    Google Scholar 

  • Silva-Afonso, A., Bernardo, J., Pimentel-Rodrigues, C. (2013). Implications of reduced flush volumes in building drainage: an experimental study, In: CIB W062 (eds.): Water supply and drainage for buildings. Proc. 39th Symposium CIB W062, Nagano, Japan, 17-19 September

  • Smith C.; Parmenter K. (2016). Building and site energy audits. Energy Management Principles (Second Edition), 69–93. ISBN: 978-0-128-02506-2

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Authors and Affiliations

  1. RISCO, Department of Civil Engineering, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal

    Fernanda Rodrigues, Armando Silva-Afonso, Armando Pinto & Joaquim Macedo

  2. ANQIP – Portuguese Association for Quality and Efficiency in Building Services, Operational Centre of the University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal

    Armando Silva-Afonso & Carla Pimentel-Rodrigues

  3. LNEC, Civil Engineering National Laboratory, Av. Brasil 101, 1700-066, Lisbon, Portugal

    Armando Pinto & António Silva Santos

Authors
  1. Fernanda Rodrigues
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  2. Armando Silva-Afonso
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  3. Armando Pinto
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  4. Joaquim Macedo
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  5. António Silva Santos
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  6. Carla Pimentel-Rodrigues
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Correspondence to Fernanda Rodrigues.

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Responsible editor: Philippe Garrigues

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Rodrigues, F., Silva-Afonso, A., Pinto, A. et al. Increasing water and energy efficiency in university buildings: a case study. Environ Sci Pollut Res 27, 4571–4581 (2020). https://doi.org/10.1007/s11356-019-04990-w

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  • DOI: https://doi.org/10.1007/s11356-019-04990-w

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