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Performance analysis of a hybrid ventilation system in a near zero energy building.
Rey-Hernández, Javier M; San José-Alonso, Julio F; Velasco-Gómez, Eloy; Yousif, Charles; Rey-Martínez, Francisco J.
  • Rey-Hernández JM; Higher Polytechnic School, European University Miguel Cervantes (UEMC), 47012, Valladolid, Spain.
  • San José-Alonso JF; Department of Energy and Fluid Mechanics, School of Engineering (EII), University of Valladolid (UVa), 47002, Valladolid, Spain.
  • Velasco-Gómez E; Department of Energy and Fluid Mechanics, School of Engineering (EII), University of Valladolid (UVa), 47002, Valladolid, Spain.
  • Yousif C; Institute for Sustainable Energy, University of Malta (UM), 1531 Marsaxlokk, Malta.
  • Rey-Martínez FJ; Department of Energy and Fluid Mechanics, School of Engineering (EII), University of Valladolid (UVa), 47002, Valladolid, Spain.
Build Environ ; 185: 107265, 2020 Nov.
Article in English | MEDLINE | ID: covidwho-753837
ABSTRACT
In this research paper, an analysis is developed on the performance of a hybrid ventilation system that combines Earth-to-Air Heat eXchangers (EAHX), free cooling and evaporative cooling Air Handling Unit Heat eXchanger (AHU-HX), all being controlled by a Building Management System (BMS) in a net Zero Energy Building (nZEB), called LUCIA. LUCIA nZEB is the first safe-building against Covid-19 in the world, certified by the international organisation WOSHIE, and located in Valladolid, Spain. The main aim is to optimize the performance of the three systems in such a way that the Indoor Air Quality (IAQ) levels remain within the allowable limits, while maximizing the use of natural resources and minimizing energy consumption and carbon emissions. The approach to satisfy the heating and cooling demand and IAQ levels through zero emissions energy systems is developed, thus anticipating the zero-energy target, set by the European Union for 2050. Results showed that the installed hybrid ventilation system uses heat exchangers for 70% of the operational time, in order to achieve the set parameters successfully. Also, the analysis made by monitoring data, have shown that the control and optimal operation of the hybrid ventilation system allows high energy recovery values with minimum additional electricity consumption. Significant reduction of carbon emissions and operational costs have been achieved.
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Full text: Available Collection: International databases Database: MEDLINE Type of study: Experimental Studies Language: English Journal: Build Environ Year: 2020 Document Type: Article Affiliation country: J.buildenv.2020.107265

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Full text: Available Collection: International databases Database: MEDLINE Type of study: Experimental Studies Language: English Journal: Build Environ Year: 2020 Document Type: Article Affiliation country: J.buildenv.2020.107265