NZEB: What are near-zero energy buildings?

NZEB: What are near-zero energy buildings?

have a significant impact on buildings global energy consumption, represents a significant portion of this valuable resource. whether it’s about Private residences, offices or commercial propertiesthey are accounted for 40% of the total of energy consumption worldwide. To effectively address issues related to sustainability, energy efficiency, cost reduction and the fight against pollution, it is imperative to take action to reduce the energy consumption of buildings and improve their efficiency.

What are Nazeb buildings?

But how can we achieve these goals? The solution lies in both Renovation of existing buildings and in the design of new buildings with innovative standards, advanced features and positive impacts on the environment. In this context, near-zero-energy buildings, known by this acronym, come into play NazebMeaning “near zero energy building, These buildings are designed to consume very low, almost negligible levels of energy. The term ENGB originated when it was introduced into the package of European directives known as the EPBD.Energy Performance Building Guidelines, These European directives emphasize the importance of national regulations that support the construction of highly energy efficient buildings in all EU member states.

In Italy, progress towards the construction of nazeb buildings has been significant but many steps still remain to be taken. By 2019, before the beginning of the pandemic emergency, more than 1,500 Nzeb buildings had been constructed, the majority of which Intended for residential use, and most of them had obtained Class A4 energy certification. The leading regions in this direction were Lombardy, Emilia Romagna and Veneto. Additionally, the process of refurbishing about a hundred public buildings, including schools and offices, is already underway to convert them into structures with near-zero energy consumption.

Features of nazeb buildings and their operation

A nezeb building has a number of distinctive characteristics and is based on Innovative solutions and advanced materials, These buildings are designed according to the principles of sustainable and bio-climatic design, integrated into their surrounding environment, correctly oriented Make the most of natural resources like sun and wind, They are equipped with excellent thermal insulation, powered mainly by renewable energy and equipped with technologically advanced systems.

Nezeb is an important aspect in building design heat management, during’winteraims at Make the most of solar energy, compact it and guarantee excellent thermal insulation. in reverse, during summerAnd It is necessary to protect the building from heat and use high-performance thermal insulation technologies with effective shading systems. Minimizing heat loss is important in any season.

Difference between Passive House and Najeb

The requirements for building a near-zero-energy building vary, but there are some basic principles to follow to ensure the project is efficient and eco-sustainable. As per current rules, A Nezeb building should have very low energy requirements hey even zero In both winter and summer. This objective is achieved through high quality thermal performance, extensive use of renewable sources and highly efficient plant technologies. For example, most buildings in Italy use Nzeb advanced insulation systems, heat pump I photovoltaic panels To produce energy with low environmental impact.

It is important to note that there is a significant difference between near-zero energy buildings and passive houses. case inactive They do not just focus on energy balance and use of renewable sources, but place more emphasis on environmental comfort of occupants, during both winter and summer months. Passive Houses are designed with a green building approach and are able to manage interior comfort without the need for high energy consumption systems, often from renewable sources. This makes them more economically advantageous and with lower CO2 emissions than traditional buildings.

Regulations on Nezab in Italy and Europe

The concept of near-zero-energy buildings and the obligation to construct such buildings was introduced by European EPBD Directive 2010/31/EU, This Directive established the objective of increasing the share of ENGB buildings in all EU countries, setting objectives and encouraging the adoption of appropriate measures. In Italy, Law 90/2013 implemented the European Directive And the requirement for on-site renewable energy generation was added. From January 1, 2021, it is mandatory for all new building projects or interventions involving demolition and subsequent reconstruction to produce NZEB buildings. in some Italian regionsLike Lombardy and Emilia Romagna, This law requiredCompliance with Nzeb standards became mandatory in early 2016 and 2019 respectively.

l’Aeneas (National Agency for New Technologies, Energy and Sustainable Economic Development) implemented a Active role in promoting near-zero energy buildings in Italy, ENEA created,National Observatory of Near Zero Energy Buildingswhich provides statistical data, information on technologies used, Design Processes and Results achieved in this growing field. Near-zero-energy buildings represent a fundamental step towards a more sustainable and energy-efficient future. Through a combination of innovative design, advanced technologies and the use Renewable energy, it is possible to significantly reduce the energy consumption of buildings, reduce operating costs and contribute to better environmental protection. Both European and Italian legislation are increasingly being adopted to encourage the construction of nondescript buildings, pushing the construction sector towards greater sustainability.





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