scholarly journals Advanced Innovative Solutions for Final Design in Terms of Energy Sustainability of Nearly/Net Zero Energy Buildings (nZEB)

2020 ◽  
Vol 12 (24) ◽  
pp. 10394
Author(s):  
Domenico Mazzeo ◽  
Giuseppe Oliveti
Keyword(s):  
Building Energy ◽  
Energy Performance ◽  
Energy Sustainability ◽  
Total Energy Consumption ◽  
Net Zero Energy ◽  
Net Zero ◽  
Innovative Solutions ◽  
Final Design ◽  
Eu Directives ◽  
Net Zero Energy Buildings

EU Directives have reinforced both studies and research for the development of innovative technological solutions to improve building energy performance and to achieve a reduction in total energy consumption, with benefits in terms of reducing greenhouse gas emissions, as well as in economic terms [...]

Investigating the probability of designing net-zero energy buildings with consideration of electric vehicles and renewable energy

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Seyed Sajad Rezaei Nasab ◽  
Abbasali Tayefi Nasrabadi ◽  
Somayeh Asadi ◽  
Seiyed Ali Haj Seiyed Taghia
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Building Energy ◽  
Energy Performance ◽  
Zero Energy ◽  
Content Type ◽  
Building Energy Performance ◽  
Net Zero Energy ◽  
Net Zero ◽  
Net Zero Energy Buildings

PurposeDue to technological improvement and development of the vehicle-to-home (V2H) concept, electric vehicle (EV) can be considered as an active component of net-zero energy buildings (NZEBs). However, to achieve more dependable results, proper energy analysis is needed to take into consideration the stochastic behavior of renewable energy, energy consumption in the building and vehicle use pattern. This study aims to stochastically model a building integrating photovoltaic panels as a microgeneration technology and EVs to meet NZEB requirements.Design/methodology/approachFirst, a multiobjective nondominated sorting genetic algorithm (NSGA-II) was developed to optimize the building energy performance considering panels installed on the façade. Next, a dynamic solution is implemented in MATLAB to stochastically model electricity generation using solar panels as well as building and EV energy consumption. Besides, the Monte Carlo simulation method is used for quantifying the uncertainty of NZEB performance. To investigate the impact of weather on both energy consumption and generation, the model is tested in five different climatic zones in Iran.FindingsThe results show that the stochastic simulation provides building designers with a variety of convenient options to select the best design based on level of confidence and desired budget. Furthermore, economic evaluation signifies that investing in all studied cities is profitable.Originality/valueConsidering the uncertainty in building energy demand and PV power generation as well as EV mobility and the charging–discharging power profile for evaluating building energy performance is the main contribution of this study.

Balcony Systems (Isokorb) Impact on Energy Need for Heating and Economic Valuation

2016 ◽  
Vol 820 ◽  
pp. 146-151
Author(s):  
Peter Buday ◽  
Rastislav Ingeli
Keyword(s):  
Energy Demand ◽  
Economic Valuation ◽  
Energy Performance ◽  
Political Strategy ◽  
Demand Model ◽  
Zero Energy ◽  
Net Zero Energy ◽  
Net Zero ◽  
Net Zero Energy Buildings ◽  
Zero Energy Buildings

Rising living standards have led to a significant increase in building energy consumption over the past few decades. Therefore, along with sustainability requirements, it is essential to establish an effective and precise energy demand model for new buildings. In principle, energy demand in buildings is very important plan to pre-calculate and that is one of the reasons why it is supposed to be precalculated for most of the sustainable buildings. Net Zero-Energy Buildings (NZEBs) have received increased attention in recent years as a result of constant concerns about energy supply constraints, decreasing energy resources, increasing energy costs and the rising impact of greenhouse gases on world climate. Promoting whole building strategies that employ passive measures together with energy efficient systems and technologies using renewable energy became a European political strategy following the publication of the Energy Performance of Buildings Directive recast in May 2010 by the European Parliament and Council. In Net Zero-Energy Buildings (NZEB) is necessary to calculate all factors that influence on energy need for heating. However what is still underestimated is the consideration that the energy performance of any building component is the result not only of its thermophysical properties but also of how are all the components installed and connected to each other. Thermal bridging in buildings can contribute to a multitude of problems. One of the details that create thermal bridges is balcony. This paper is focused to calculate Balcony systems (isokorb) impact on energy need for heating and economic valuation of balcony systems in residential building.

scholarly journals Forecasting of Three Components of Solar irradiation for Building Applications

2019 ◽  
Vol 111 ◽  
pp. 05012
Author(s):  
Gilles Notton ◽  
Cyril Voyant ◽  
Alexis Fouilloy ◽  
Jean Laurent Duchaud ◽  
Marie Laure Nivet
Keyword(s):  
Random Forest ◽  
Weather Forecast ◽  
Building Energy ◽  
Solar Irradiation ◽  
Zero Energy ◽  
Building Model ◽  
Net Zero Energy ◽  
Net Zero ◽  
Net Zero Energy Buildings ◽  
Three Components

Solar energy and the concept of passive architecture and Net Zero Energy buildings are being increased. For an optimal management of the building energy, a Model Predictive Control is generally used but requires an accurate building model and weather forecast. For a more reliable modelling, the knowledge of the global solar irradiation is not sufficient; three methods, smart persistence, artificial neural network and random forest, are compared to forecast the three components of solar irradiation measured on the site with a high meteorological variability. Hourly solar irradiations are forecasted for time horizons from h+1 to h+6. The random forest method (RF) is the most efficient and the accuracy of forecasts are in term of nRMSE, from 19.65% for h+1 to 27.78% for h+6 for global horizontal irradiation, from 34.11% for h+1 to 49.08% for h+6 for beam normal irradiation, from 35.08% for h+1 to 49.14% for h+6 for diffuse horizontal irradiation. The improvement brought by the use of RF compared to the two other methods increases with the forecasting horizon. A seasonal study is realized and shows that the forecasting during spring and autumn is less reliable than during winter and summer due to a higher meteorological variability.

scholarly journals Retrofitted Existing Residential Building Design in Energy and Economic Aspect According to Thailand Building Energy Code

2021 ◽  
Vol 11 (4) ◽  
pp. 1398
Author(s):  
Santipont Ananwattanaporn ◽  
Theerasak Patcharoen ◽  
Sulee Bunjongjit ◽  
Atthapol Ngaopitakkul
Keyword(s):  
Residential Building ◽  
Electrical Energy ◽  
Building Design ◽  
Building Energy ◽  
Zero Energy ◽  
Total Energy Consumption ◽  
Existing Building ◽  
Net Zero Energy ◽  
Net Zero Energy Building ◽  
Net Zero

Electrical energy usage in buildings is a challenging issue because many old buildings were not originally built to achieve energy efficiency. Thus, retrofitting old buildings to net-zero buildings can benefit both the owner and electric utilities. In this study, the BEC (building energy code) software was used to evaluate energy aspects of retrofitted buildings in compliance with Thailand’s building energy code to achieve a net-zero energy building. In addition, economic aspects were also studied to verify the feasibility for a project’s owner to invest in a retrofitted existing building. An existing residential building in Thailand was used as a case study. The results in terms of energy after retrofitting existing buildings into net-zero energy buildings show that the total energy consumption can be reduced by 49.36%. From an economic perspective, the investment cost for a retrofitted building can be compensated by energy saving in terms of discounted payback period (DPP) for approximately 4.36 years and has an IRR (internal rate of return) value of 19.23%. This result evidences the potential in both energy and economy for a project’s owner to invest in a retrofitted existing building in compliance with the building code, with potential for implementation with benefits on both electrical utilities and the project’s owner.

scholarly journals Energy and Emission Implications of Electric Vehicles Integration with Nearly and Net Zero Energy Buildings

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6990
Author(s):  
Hassam ur Rehman ◽  
Jan Diriken ◽  
Ala Hasan ◽  
Stijn Verbeke ◽  
Francesco Reda
Keyword(s):  
Electric Vehicles ◽  
Quantitative Methods ◽  
Energy Performance ◽  
Energy Calculation ◽  
Zero Energy ◽  
Net Zero Energy ◽  
Net Zero ◽  
Building Load ◽  
Net Zero Energy Buildings ◽  
Zero Energy Buildings

Buildings and the mobility sectors are the two sectors that currently utilize large amount of fossil-based energy. The aim of the paper is to, critically analyse the integration of electric vehicles (EV) energy load with the building’s energy load. The qualitative and quantitative methods are used to analyse the nearly/net zero energy buildings and the mobility plans of the Europe along with the challenges of the plans. It is proposed to either include or exclude the EV load within the building’s energy load and follow the emissions calculation path, rather than energy calculation path for buildings to identify the benefits. Two real case studies in a central European climate are used to analysis the energy performance of the building with and without EV load integration and the emissions produced due to their interaction. It is shown that by replacing fossil-fuel cars with EVs within the building boundary, overall emissions can be reduced by 11–35% depending on the case study. However, the energy demand increased by 27–95% when the EV load was added with the building load. Hence, the goal to reach the nearly/net zero energy building target becomes more challenging. Therefore, the emission path can present the benefits of EV and building load integration.

scholarly journals Design Issues for Net Zero-Energy Buildings

2013 ◽  
Vol 38 (3) ◽  
pp. 7-14
Author(s):  
Laura Aelenei ◽  
Daniel Aelenei ◽  
Helder Gonçalves ◽  
Roberto Lollini ◽  
Eike Musall ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Residential Buildings ◽  
Research Work ◽  
Energy Performance ◽  
Energy Resources ◽  
Zero Energy ◽  
Net Zero Energy ◽  
Net Zero ◽  
Net Zero Energy Buildings ◽  
Zero Energy Buildings

Net Zero-Energy Buildings (NZEBs) have received increased attention in recent years as a result of constant concerns about energy supply constraints, decreasing energy resources, increasing energy costs and the rising impact of greenhouse gases on world climate. Promoting whole building strategies that employ passive measures together with energy efficient systems and technologies using renewable energy became a European political strategy following the publication of the Energy Performance of Buildings Directive recast in May 2010 by the European Parliament and Council. However designing successful NZEBs represents a challenge because the definitions are somewhat generic while assessment methods and monitoring approaches remain under development and the literature is relatively scarce about the best sets of solutions for different typologies and climates likely to deliver an actual and reliable performance in terms of energy balance (consumed vs generated) on a cost-effective basis. Additionally the lessons learned from existing NZEB examples are relatively scarce. The authors of this paper, who are participants in the IEA SHC Task 40-ECBCS Annex 52, “Towards Net Zero Energy Solar Buildings”, are willing to share insights from on-going research work on some best practice leading NZEB residential buildings. Although there is no standard approach for designing a Net Zero-Energy Building (there are many different possible combinations of passive and efficient active measures, utility equipment and on-site energy generation technologies able to achieve the net-zero energy performance), a close examination of the chosen strategies and the relative performance indicators of the selected case studies reveal that it is possible to achieve zero-energy performance using well known strategies adjusted so as to balance climate driven-demand for space heating/cooling, lighting, ventilation and other energy uses with climate-driven supply from renewable energy resources.

Common Characteristics of Zero Energy Buildings in Relation to the Energy Distribution Networks

2013 ◽  
Vol 855 ◽  
pp. 31-34
Author(s):  
Boris Bielek ◽  
Milan Bielek
Keyword(s):  
Energy Balance ◽  
Energy Distribution ◽  
Distribution Networks ◽  
Building Energy ◽  
Building Envelope ◽  
Zero Energy ◽  
Net Zero Energy ◽  
Net Zero ◽  
Net Zero Energy Buildings ◽  
Zero Energy Buildings

Physical quantification of the building envelope. Energy quantification of the building. Energy from fossil sources. Energy from ecologically clean renewable sources. Nearly net zero energy buildings. Net zero energy buildings. Net plus energy buildings. The characteristics of zero energy buildings in relation to the energy distribution networks. Requirements for physical quantification of buildings with a zero energy balance in relation to energy distribution networks.

scholarly journals A Comparative Study of Energy Performance in Educational Buildings in the UAE

2021 ◽  
Vol 21 (3) ◽  
Author(s):  
Vian Ahmed ◽  
Sara Saboor ◽  
Fatima Ahmed Almarzooqi ◽  
Hessa Ahmed Alshamsi ◽  
Mariam Abdalla Alketbi ◽  
...  
Keyword(s):  
Built Environment ◽  
United Arab Emirates ◽  
Methodological Approach ◽  
Energy Performance ◽  
Structured Interviews ◽  
Net Zero Energy ◽  
Net Zero ◽  
Educational Buildings ◽  
Net Zero Energy Buildings

Sustainability has gained popularity and importance around the globe due to the ever-increasing effects of climate change and global warming on Earth. As of the 21st century, human endeavour has caused an enormous amount of damage to the environmental ecological system. Among which, one of the major contributors to the increase in the environmental issues and CO2 emissions are the conventional sources of energy, especially in the built environment. Globally, the built environment accounts for 12 percent of the world’s drinkable water, 40 percent of energy wastage and 35 percent of scarce natural resources, which in turn produces 40 percent of the total global carbon emission. Among which are educational buildings which tend to be a major contributor (as most of these facilities are old and conventionally built in the mid-1900s) Thus, with the education sector being an essential part of society, it becomes important to determine the energy performance and carbon footprint of these buildings. The United Arab Emirates (UAE) vision 2021 highlights the country's approach to the importance of providing the best education and adopting sustainable environmental infrastructure. Therefore, this study adopts a methodological approach based on semi-structured interviews and surveys, in order to compare the energy performance of three educational buildings within Higher Education establishments in the UAE as a case study. The study also evaluates the end user’s awareness of the importance of sustainable practices in the buildings and their preference for these buildings. The findings of this study conclude that Net Zero Energy Buildings (NZEBs) are the most efficient buildings in terms of energy performance, carbon consumption and heat generated. Therefore, it is important that the integration of these types of buildings is considered in educational establishments.

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