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

Ana Tejero-González , Dorota Krawczyk , José Ramón Martín-Sanz García , Francisco Javier Rey-Martínez , Eloy Velasco-Gómez

Abstract

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.
Author Ana Tejero-González
Ana Tejero-González,,
-
, Dorota Krawczyk (FCEE / HVAC)
Dorota Krawczyk,,
- Heating, Ventilation, Air Conditioning Department (HVAC Department)
, José Ramón Martín-Sanz García
José Ramón Martín-Sanz García,,
-
, Francisco Javier Rey-Martínez
Francisco Javier Rey-Martínez,,
-
, Eloy Velasco-Gómez
Eloy Velasco-Gómez,,
-
Journal seriesEnergies, ISSN 1996-1073, (N/A 140 pkt)
Issue year2019
Vol12
No15
Pages1-14
Publication size in sheets0.65
Keywords in Englishventilated façade; photovoltaics; monitoring; model validation; energy conservation measure
ASJC Classification1700 General Computer Science
DOIDOI:10.3390/en12153033
URL https://www.mdpi.com/1996-1073/12/15/3033
Internal identifierROC 19-20
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); with publication
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 12-02-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.156; WoS Impact Factor: 2018 = 2.707 (2) - 2018=2.99 (5)
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