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Simulation and Analysis of Various Ventilation Systems Given in an Example in the Same School of Indoor Air Quality
Open AccessArticle

Improved Performance of a PV Integrated Ventilated Façade at an Existing nZEB

Department of Energy and Fluidmechanics, School of Engineering, University of Valladolid, Paseo del Cauce No.59, 47011 Valladolid, Spain
ITAP, School of Engineering, University of Valladolid, 47011 Valladolid, Spain
Department of HVAC Engineering, Faculty of Civil Engineering and Environmental Engineering, Bialystok University of Technology, Wiejska 45E, 15-351 Białystok, Poland
Veolia Australia and New Zealand, 65 Pirrama Road, Pyrmont NSW 2009, Australia
Author to whom correspondence should be addressed.
Energies 2019, 12(15), 3033;
Received: 12 June 2019 / Revised: 2 August 2019 / Accepted: 2 August 2019 / Published: 6 August 2019
(This article belongs to the Special Issue Innovations-Sustainability-Modernity-Openness in Energy Research 2019)
Ventilated façades are among the existing measures to reduce the energy demand in buildings. The combination of this passive heating and cooling strategy with photovoltaics (PV) can drive new buildings towards the current European targets near or even to net zero energy Buildings (nZEB). The present work studies the thermal behavior of the PV integrated ventilated façade applied in the nZEB known as “LUCIA” (acronym in Spanish for “University Centre to Launch Applied Research”) at the University of Valladolid, Spain. The aim is to evaluate the interest of recirculating indoor air within the façade during winter, as an alternative to the present preferred operating mode during the target season, in which the façade acts as further insulation. First, the radiant properties of the PV façade are measured to use the values in a mathematical model that describes the behavior of the ventilated façade in its current operating mode in winter. Then, the solar radiation available, the air-dry bulb temperatures indoors, outdoors and inside the ventilated façade are monitored to obtain experimental data to validate the model. The results show that air recirculation can entail favorable heat gains during 10% of winter, being this alternative preferable to the present operating mode when outdoor temperatures are over 18.4 °C. View Full-Text
Keywords: ventilated façade; photovoltaics; monitoring; model validation; energy conservation measure ventilated façade; photovoltaics; monitoring; model validation; energy conservation measure
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MDPI and ACS Style

Tejero-González, A.; Krawczyk, D.A.; Martín-Sanz García, J.R.; Rey-Martínez, F.J.; Velasco-Gómez, E. Improved Performance of a PV Integrated Ventilated Façade at an Existing nZEB. Energies 2019, 12, 3033.

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