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FROM NEARLY ZERO ENERGY BUILDING (NZEB) TO ZERO-EMISSION BUILDING (ZEB) - CONCEPT ISSUES EMPHASIZED THROUGH A PARADOXICAL CASE STUDY

Ancuța Maria Măgurean

First published: 2023-12-15https://doi.org/10.5593/sgem2023v/6.2/s26.68View metrics

Abstract

A case study for a public library which aim to become nearly Zero Energy Building (nZEB) is presented. Due to building-s location in the city center of a medium sized municipality from Romania, important site limits have to be considered, as well as other pre-existent conditions. These conditions significantly limit the technological options that can be implemented to ensure nZEB compliance. Also, the destination itself of the building (library with free access to the shelves), imposes a specific energy profile (considering the intrinsic energy demand for its normal operation) and is limiting the inclusion into a very specific nZEB benchmark. Between obligations and possibilities, a cutting-edge package of technical solutions is detailed, which allows the building in operation to produce final energy almost as much as it consumes. However, a paradoxical situation is identified, in the sense that the building does not fit into the nZEB benchmarks, nor into the outlined ZEB benchmarks if the total primary energy is considered (both from conventional and renewable sources), although the implementation of the technical solutions actually lead the building to inclusion towards a CO2 zero-emission building (with a calculated value for the CO2 emissions of 5,26 kgCO2/m2.year and significantly reduced final energy consumption). Thus, a structural problem in the nZEB and ZEB concepts (as defined in the EU framework) is identified, especially in the context of making these concepts mandatory in the EU member states.

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Publication details

Title
FROM NEARLY ZERO ENERGY BUILDING (NZEB) TO ZERO-EMISSION BUILDING (ZEB) - CONCEPT ISSUES EMPHASIZED THROUGH A PARADOXICAL CASE STUDY
Authors
Ancuța Maria Măgurean
Proceedings
SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 23rd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2023, Nano, Bio, Green and Space: Technologies for a Sustainable Future, Vol. 23, Issue 6.2
Publisher
STEF92 Technology
Year
2023
Pages
551-559
SWS Citekey
Magurean202326551559
ISSN
1314-2704
ISBN
978-619-7603-66-8
Language
en
Publication type
Conference Paper
Proceedings contents
Open official contents
Keywords
nearly Zero Energy Building (nZEB)Zero-Emission Building (ZEB)new buildingstotal primary energyCO2 emissions
References10

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