The Evaluation of Nearly Zero Energy Buildings in the Czech Republic

2013 ◽  
Vol 649 ◽  
pp. 15-18 ◽  
Author(s):  
Michal Kraus ◽  
Filip Konečný
Keyword(s):  
Czech Republic ◽  
Energy Performance ◽  
High Energy ◽  
Zero Energy ◽  
The Czech Republic ◽  
Zero Energy Building ◽  
Very High Energy ◽  
Set Up ◽  
New Buildings ◽  
Zero Energy Buildings

The Energy Performance of Buildings Directive requires that all new buildings must be nearly zero energy buildings by 2020. A nearly zero energy building is a building that has a very high energy performance. The current absence of evaluating the nearly zero energy buildings encourages to set up simple and explicit methodology for evaluation nZEB in the Czech Republic. The evaluation of the nearly zero building is based on the annual balance of energy.

Architectural Elements with Respect to the Energy Performance of Buildings

2014 ◽  
Vol 1020 ◽  
pp. 561-565 ◽  
Author(s):  
Rastislav Ingeli ◽  
Katarína Minarovičová ◽  
Miroslav Čekon
Keyword(s):  
Energy Demand ◽  
Energy Use ◽  
Energy Performance ◽  
High Energy ◽  
Primary Energy ◽  
Zero Energy ◽  
Architectural Elements ◽  
Zero Energy Building ◽  
Very High Energy ◽  
Building Operation

Buildings account for 40% of the primary energy use and 24%of the generation of green house gases worldwide. Therefore, a reduction of the specific energy demand of buildings and increased use of renewable energy are important measures of climate change mitigation. On the 18th of May 2010 a recast of the EPBD was approved which further clarifies the intention that buildings shall have a low energy demand. The recast of the EPBD specifies that by the end of 2020 all new buildings shall be “nearly zero-energy buildings”. A nearly zero-energy building is defined as a building with a very high energy performance and very simple shape. The current focusing on the energy efficiency of the building operation may lead to uniform cuboid architecture with heavy insulated building envelopes. The paper deals with the influence of energy concept on architectural elements (and their properties as shape, material, colour, texture etc.)

scholarly journals Efficient energy use and storage practices within residential facilities for compliance with the nZEB criteria

2019 ◽  
Vol 85 ◽  
pp. 08002
Author(s):  
Ion Murgescu ◽  
Lucia-Andreea El-Leathey ◽  
Rareş-Andrei Chihaia ◽  
Gabriela Cîrciumaru
Keyword(s):  
Renewable Energy ◽  
Energy Use ◽  
Electricity Consumption ◽  
Energy Performance ◽  
High Energy ◽  
Photovoltaic System ◽  
Zero Energy ◽  
Starting Point ◽  
Very High Energy ◽  
Zero Energy Buildings

Solar energy, today, is the leader in renewable energy and the world's increasing new energy source. In 2016, for the first time, newly installed photovoltaic capacity has increased by more than 50%, exceeding the new coal-fired power stations capacity established worldwide. At the beginning of the year, the European Parliament agreed the target that 35% renewable sources by 2030. Studies show that by 2050 approximately 45% of all the households in the EU could produce their own renewable energy and more than a third of them could be part of a renewable energy cooperative, despite the worries of the distribution companies. Furthermore, the EPBD directive (EU) - Energy Performance of Buildings pushes towards new and more performing buildings - nearly zero energy buildings (nZEB) - where energy efficiency and energy flexibility are essential to achieve the required performance targets. Nearly zero-energy buildings (NZEBs) have very high energy performance and could be achieved through the integration of renewable and decentralized energy sources, continuous grid optimization and the inclusion of increasing numbers of consumers becoming producers, so called prosumers. So far, the photovoltaic system is the single technology that can combine data from utility networks with household consumption and therefore should be considered a starting point for streamlining the electricity consumption and production which will be imposed by strict regulations.

The Evaluation of Non-Renewable Primary Energy as Part of Energy Performance Certificates

2014 ◽  
Vol 1041 ◽  
pp. 222-225
Author(s):  
Michal Kraus ◽  
Kateřina Kubenková ◽  
Darja Kubečková
Keyword(s):  
European Union ◽  
Czech Republic ◽  
Energy Performance ◽  
Primary Energy ◽  
Energy Sources ◽  
The European Union ◽  
Existing Buildings ◽  
The Czech Republic ◽  
The Impact ◽  
New Buildings

The evaluation of non-renewable primary energy expressing the impact of the environment is part of the energy performance certificate. The evaluation is based on factors of primary energy. New buildings or larger modifications of existing buildings must meet the legislative requirements in the Czech Republic, which are consistent with the requirements of the European Union. On the basis of modeling of different energy sources and different number of energy sources for the selected building are set values of non-renewable primary energy.

Economic Aspects of Implementing Energy Performance Labelling of Buildings and Flats in the Czech Republic

2014 ◽  
Vol 1020 ◽  
pp. 491-494
Author(s):  
Jan Pasek ◽  
Jan Mlcak ◽  
Katerina Paskova
Keyword(s):  
Czech Republic ◽  
Energy Consumption ◽  
Energy Performance ◽  
High Energy ◽  
Purchase Price ◽  
Economic Aspects ◽  
The Czech Republic ◽  
High Energy Consumption

Since 2013 it is compulsory in the Czech Republic to declare energy performance of a property intended for sale or lease in so called Energy Performance Certificates. Before introduction of this obligation many various arguments were presented to public to support it, especially by the subjects participating in the energetic evaluation of buildings. One of the most common arguments was that this gives people interested in lease or purchase of a property with high energy consumption a tool for reduction of the rental fee or the purchase price. This contribution, based on performed research and wider analyses, shows that this assumption together with others was misleading, and it also evaluates the reasons of this fact.

scholarly journals Nearly Zero Energy Standard for Non-Residential Buildings with High Energy Demands—An Empirical Case Study Using the State Related Properties of Bavaria

2017 ◽  
Author(s):  
Michael Keltsch ◽  
Werner Lang ◽  
Thomas Auer
Keyword(s):  
Energy Demand ◽  
Energy Savings ◽  
Residential Buildings ◽  
Energy Performance ◽  
High Energy ◽  
Primary Energy ◽  
The State ◽  
Zero Energy ◽  
Primary Energy Demand ◽  
New Buildings

The Energy Performance of Buildings Directive 2010 calls for the Nearly Zero Energy Standard for new buildings from 2021 onwards: Buildings using “almost no energy” are powered by renewable sources or energy produced by the building itself. For residential buildings, this ambitious new standard has already been reached. But for other building types this goal is still far away. The potential of these buildings to meet a Nearly Zero Energy Standard was investigated by analyzing ten case studies representing non-residential buildings with different uses. The analysis shows that the primary characteristics common to critical building types are a dense building context with a very high degree of technical installation (such as hospital, research and laboratory buildings). The large primary energy demand of these types of buildings cannot be compensated by building and property-related energy generation including off-site renewables. If the future Nearly Zero Energy Standard were to be defined with lower requirements because of this, the state related properties of Bavaria suggest that the real potential energy savings available in at least 85% of all new buildings would be insufficiently exploited. Therefore, it would be useful to instead individualize the legal energy verification process for new buildings to distinguish critical building types such as laboratories and hospitals.

Life cycle costs and environmental impacts of a nearly zero-energy detached house

2013 ◽  
Vol 4 (2) ◽  
pp. 163-169
Author(s):  
Zs. Szalay ◽  
T. Csoknyai
Keyword(s):  
Life Cycle ◽  
Environmental Impacts ◽  
Life Cycle Cost ◽  
Energy Demand ◽  
Building Design ◽  
Energy Performance ◽  
High Energy ◽  
Zero Energy ◽  
Detached House ◽  
Zero Energy Buildings

Abstract The recast of the Energy Performance Building Directive contains a new article about the need to increase the number of buildings which go beyond current national requirements, and to draw up national plans for increasing the number of nearly zero-energy buildings (nZEB) with the final target that by 2020 all new buildings shall be nearly-zero energy. Nearly zero-energy buildings are buildings with a very high energy performance, where the remaining low energy demand can be supplied to a significant extent by renewable energy. In this paper, a detached house complying with the proposed Hungarian nZEB requirements is analysed. The life cycle cost and life cycle environmental impacts of the building are assessed for various building service systems to optimise the building design.

scholarly journals Nearly Zero Energy Standard for Non-Residential Buildings with High Energy Demands—An Empirical Case Study Using the State Related Properties of Bavaria

2017 ◽  
Author(s):  
Michael Keltsch ◽  
Werner Lang ◽  
Thomas Auer
Keyword(s):  
Energy Demand ◽  
Energy Savings ◽  
Residential Buildings ◽  
Energy Performance ◽  
High Energy ◽  
Primary Energy ◽  
The State ◽  
Zero Energy ◽  
Primary Energy Demand ◽  
New Buildings

The Energy Performance of Buildings Directive 2010 calls for the Nearly Zero Energy Standard for new buildings from 2021 onwards: Buildings using “almost no energy” are powered by renewable sources or energy produced by the building itself. For residential buildings, this ambitious new standard has already been reached. But for other building types this goal is still far away. The potential of these buildings to meet a Nearly Zero Energy Standard was investigated by analyzing ten case studies representing non-residential buildings with different uses. The analysis shows that the primary characteristics common to critical building types are a dense building context with a very high degree of technical installation (such as hospital, research and laboratory buildings). The large primary energy demand of these types of buildings cannot be compensated by building and property-related energy generation including off-site renewables. If the future Nearly Zero Energy Standard were to be defined with lower requirements because of this, the state related properties of Bavaria suggest that the real potential energy savings available in at least 85% of all new buildings would be insufficiently exploited. Therefore, it would be useful to instead individualize the legal energy verification process for new buildings to distinguish critical building types such as laboratories and hospitals.

scholarly journals Nearly Zero-Energy Buildings of the Lombardy Region (Italy), a Case Study of High-Energy Performance Buildings

Energies ◽  
2013 ◽  
Vol 6 (7) ◽  
pp. 3506-3527 ◽  
Author(s):  
Giuliano Dall'O' ◽  
Valentina Belli ◽  
Mauro Brolis ◽  
Ivan Mozzi ◽  
Mauro Fasano
Keyword(s):  
Energy Performance ◽  
High Energy ◽  
Zero Energy ◽  
Lombardy Region ◽  
Zero Energy Buildings

Biomass Use for Low Energy Buildings and Retrofits

2016 ◽  
Vol 861 ◽  
pp. 609-617
Author(s):  
Krisztina Severnyák ◽  
András Zöld
Keyword(s):  
Environmental Problem ◽  
Energy Performance ◽  
High Energy ◽  
Low Energy ◽  
System Efficiency ◽  
Zero Energy ◽  
Low Energy Buildings ◽  
The Right ◽  
The Cost ◽  
Zero Energy Buildings

Based on the EPBD 2010 directive and the mandated method of cost-optimum calculation the forthcoming national regulations require “nearly zero energy buildings” which have high energy performance, significant share of renewables in covering the low energy need and harmonizing the requirement system and the cost-optimum. Known intention of MS as well as some research reports create the impression that predominant use of biomass in the forthcoming years will be the right way to fulfil the above requirements of nearly zero energy buildings. Nevertheless a brief analysis proves that these expectations are exaggerated due to either cost problem or seasonal system efficiency whilst some “secondary” environmental problem must not be forgotten.

scholarly journals Ambition Levels of Nearly Zero Energy Buildings (nZEB) Definitions: An Approach for Cross-Country Comparison

Buildings ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 143 ◽  
Author(s):  
Juan Garcia ◽  
Lukas Kranzl
Keyword(s):  
Energy Consumption ◽  
Residential Buildings ◽  
Energy Performance ◽  
High Energy ◽  
Primary Energy ◽  
Building Codes ◽  
Zero Energy ◽  
Country Comparison ◽  
Cross Country ◽  
Zero Energy Buildings

Since buildings account for 40% of total energy consumption and 36% of CO2 emissions in the European Union (EU), the directive 2010/31/EU “Energy Performance of Buildings Directive (EPDB)” among other legal provisions concerning the reduction of energy consumption of buildings has been enforced. According to this legislation, all new buildings must be nearly zero energy buildings “nZEB” by 31 December 2020 (public buildings by 31 December 2018). Nonetheless, the assessment of the “high energy performance” of a building is ambiguous and a cross country comparison seems to be intricate since different national building codes and nZEB definitions employ different energy indicators and methods. This paper delves into the question of how do the ambition levels of “nZEB” definitions and the transposition of the Directive 2010/31/EU into national law differ in four selected EU Countries: Austria, Germany, Spain, and England (as part of UK). The energy performance of some exemplary buildings is assessed by means of a simplified MATLAB model that is based on the norm DIN V-18599. The results drawn from this work show how diverse are building codes scopes and national “nZEB” definitions. Only 9 of the 36 studied cases of residential buildings obtain consistently the “nZEB” compliance status in all four selected countries. The results show that climate conditions, energy requirements, primary energy factors, ambition levels, and calculation methodologies lead to the problem of an uneven cross-country comparison. Moreover, primary energy consumption [kWh/m2a] set as the main quantitative energy indicator by the directive 2010/31/EU might not be the most suitable one for an EU level comparison.

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