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Evolution of all-glass nearly zero energy buildings with respect to the local climate and free-cooling techniques
Domjan, Suzana (Author), Arkar, Ciril (Author), Begelj, Žiga (Author), Medved, Sašo (Author)

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Abstract
This paper presents research on the nearly Zero Energy Buildings (nZEB) metrics of an all-glass office building with advanced multi-layer six-pane glass and building integrated photovoltaic (BIPV) façade structures in different climate conditions. The study was carried out in the following steps: i) development of a time series model of dynamic thermal response of multi-layer six-pane glass and BIPV façade structures on the basis of transient computational fluid dynamics simulations, ii) integration of the façade structure dynamic model into the building dynamic model by adapting TRNSYS software code, iii) determination of the final energy balance including heating, cooling, ventilation, lighting, and on-site electricity production, iv) nZEB metrics evaluation considering night-time cooling by ventilation, evaporation cooling and hybrid ventilation of case study office buildings. It is shown that energy need for the cooling of the studied office building is dominant in all considered climate conditions, although it can be decreased up to 23% in most favourable considered climate conditions by implementing free cooling techniques. The case study buildings with BIPV structures on their east and west façades meet more stringed nZEB criteria; in addition, final energy demand decreases by 17–37% in comparison to the reference all-glass building. In the case of all-BIPV buildings, the final energy demand is decreased by 36–48%. Such buildings can significantly contribute to the mitigation of global climate change, as BIPV electricity production exceeds the building's energy demand.

Language:English
Keywords:nearly zero energy buildings, multi-layer glass structures, building integrated photovoltaics, computational fluid dynamics, dynamic building thermal response model, natural space cooling
Work type:Article (dk_c)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2019
Number of pages:str. 1-15
Numbering:Vol. 160
UDC:692.23:699.86:697(045)
ISSN on article:0360-1323
DOI:10.1016/j.buildenv.2019.106183 Link is opened in a new window
COBISS.SI-ID:16653339 Link is opened in a new window
Views:221
Downloads:53
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Record is a part of a journal

Title:Building and environment
Shortened title:Build. environ.
Publisher:Elsevier
ISSN:0360-1323
COBISS.SI-ID:4318474 This link opens in a new window

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project no.:P2-0223 (C), TIGR4smart
Name:Prenos toplote in snovi, Trajnostno in inovativno gradbeništvo za pametne stavbe

Secondary language

Language:Slovenian
Keywords:skoraj nič energijske stavbe, večplastne steklene strukture, računalniška dinamika tekočin, toplotni odzivi zgradb, hlajenje naravnega prostora

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