scholarly journals The adaptable energy platform

2019 ◽  
Author(s):  
Eur Ing A J Blokland ◽  
I P Barendregt ◽  
C J C M Posthumus
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Fossil Fuels ◽  
New Technologies ◽  
Energy Levels ◽  
Life Time ◽  
Energy Resources ◽  
Design Parameters ◽  
Green Technologies ◽  
Operational Energy

The Netherlands Ministry of Defence (MoD) has issued an Operational Energy Strategy (OES) with ambition targets for energy independence and improvement of energy efficiency during the life time of naval platforms. A target is given in 2030 of 20 % reduced dependence on fossil fuels and in 2050 of 70 % reduced dependence on fossil fuels, compared to 2010. More stringent environmental emission (NOx, CO2, etc.) requirements are to be expected as a result from IMO and (local) political regulations. In the last decades the power consumption on board of naval platforms increased substantially as well as the complexity of integrated energy systems. Market surveys shows that the evolution of commercial green technologies are promising but have to be demonstrated in the coming years on low power and energy levels. They will not be de-risked in depth or well proven to be successful in time to be selected for the Royal Netherlands Navy (RNLN) new naval projects (2019 – 2025). Furthermore, new technologies as energy resources and carriers (H2, LNG, methanol, power-to-liquid (PTL), etc.) or new system technologies (DC on high voltage level, fuel cell systems, waste energy recovery, etc.) require a new approach for integration aspects like hazard and safety cases and energy efficiency. This is because the energy demand on board of naval platforms in several military operational modes differ from the merchant and off-shore branch. In this paper an approach for an adaptable energy platform is described to design a new naval platform based on nowadays proven technology as fossil fuels that can be transformed during life time that can fulfill the expectations and requirements of the coming decades (non-fossil fuels, zero emission, improved energy efficiency). Aspects as a naval energy index as reference will be discussed as well as an evaluation of new technologies for new naval platform integration design parameters, such as power or energy demands, consequences of energy resources, energy control as well as build in ship construction safety measures.

scholarly journals Fachadas vidriadas: cálculo de transmitancia térmica

2021 ◽  
Vol 11 (1) ◽  
pp. 08-19
Author(s):  
Maureen de Gastines ◽  
◽  
Andrea Pattini
Keyword(s):  
Numerical Calculation ◽  
Energy Demand ◽  
Design Parameters ◽  
Thermal Transmittance ◽  
Operational Energy ◽  
Glazed Facade ◽  
Profile Design ◽  
Contemporary Architecture ◽  
The Impact

Glazing is one of the dominant features of modern and contemporary architecture. This envelope design may have a great impact on operational energy demand of buildings. In this work, glazed façade systems available in Argentina are analyzed, with the purpose of determining the associated thermal transmittance ranges, in terms of the profiles’ design, the type of glazing and the size of glass panes. First, by using bidimensional numerical calculation, the impact of several profile design parameters on thermal transmittance is studied, highlighting the relevance of glazing fixing methods, to then calculate the thermal transmittance of the entire facade. The results indicate that the thermal transmittance value of glazed facades, mainly depends on the transmittance of the glass used, and exceeds this by 24% on average.

The Implementation of Nearly Zero Energy Buildings (nZEB) in Spain

2019 ◽  
pp. 364-386
Author(s):  
Elisa Peñalvo-López ◽  
Javier Cárcel-Carrasco ◽  
Manuel Valcuende-Paya ◽  
María Carmen Carnero-Moya
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Energy Levels ◽  
Minimum Energy ◽  
Value Added ◽  
Economic Sector ◽  
Zero Energy ◽  
Demand Reduction ◽  
New Buildings ◽  
Zero Energy Buildings

The construction segment is an important economic sector in Europe, representing 9% of European gross domestic product (GDP) and providing approximately 18 million direct jobs. Construction activities that include renovation work and energy retrofits add almost twice as much value as the construction of new buildings, and small and medium-sized enterprises (SMEs) contribute more than 70% of the value added in the EU building sector. Furthermore, European legislation obliges member states to establish minimum energy efficiency requirements for buildings to achieve optimum levels of costs versus energy demand reduction. These requirements are reviewed every five years and represent categories of buildings based on their energy levels (demand and generation). This chapter analyzes the legislation associated to nearly zero energy buildings (nZEB) in Spain in order to identify the factors that will leverage their massive implementation.

The Implementation of Nearly Zero Energy Buildings (nZEB) in Spain

2021 ◽  
pp. 1558-1580
Author(s):  
Elisa Peñalvo-López ◽  
Javier Cárcel-Carrasco ◽  
Manuel Valcuende-Paya ◽  
María Carmen Carnero-Moya
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Energy Levels ◽  
Minimum Energy ◽  
Value Added ◽  
Economic Sector ◽  
Zero Energy ◽  
Demand Reduction ◽  
New Buildings ◽  
Zero Energy Buildings

The construction segment is an important economic sector in Europe, representing 9% of European gross domestic product (GDP) and providing approximately 18 million direct jobs. Construction activities that include renovation work and energy retrofits add almost twice as much value as the construction of new buildings, and small and medium-sized enterprises (SMEs) contribute more than 70% of the value added in the EU building sector. Furthermore, European legislation obliges member states to establish minimum energy efficiency requirements for buildings to achieve optimum levels of costs versus energy demand reduction. These requirements are reviewed every five years and represent categories of buildings based on their energy levels (demand and generation). This chapter analyzes the legislation associated to nearly zero energy buildings (nZEB) in Spain in order to identify the factors that will leverage their massive implementation.

scholarly journals Cost reduction of the new NZEB Wooden building – case study of the kindergarten in Estonia

2020 ◽  
Vol 172 ◽  
pp. 13002
Author(s):  
Endrik Arumägi ◽  
Targo Kalamees
Keyword(s):  
Energy Efficiency ◽  
Cost Effectiveness ◽  
Cost Reduction ◽  
Energy Demand ◽  
Energy Levels ◽  
Building Envelope ◽  
Base Case ◽  
Optimal Point ◽  
Class B ◽  
The Cost

In this study the cost changes caused by the implementation of the nZEB solutions are calculated. The energy demand of a building was calculated according to the methodology for calculating the energy efficiency of buildings, using dynamic energy simulations. The financial calculations are based on the methodology described in Delegated Regulation (EU) No 244/2012 of the European Commission. The simulations and calculations for assessing the cost-effectiveness of technical solutions are based on the selected sample building. The energy efficiency solutions are derived by increasing/decreasing the insulation value of the building envelope in subsequent steps. Financial calculations were based on the investment needed to achieve the nearly zero-energy levels. The results for different combinations vary to a large degree. According to regulations new building must fulfill the low energy building (EPI class “B”) requirement without local production. The EPI value to fulfill the requirement in the cost-even range is reached in case of the GSHP and efficient DH. In case of the GSHP and efficient DH also the cost-optimal point is in the EPI class “B”. Overall the minimum ΔNPV values stay below the zero line in all the cases offering a range of opportunities to choose combinations to reach lover EPI compared to base case. The results of cost-effectiveness calculations for selected building with different combinations of structural solutions and heat sources show the possible different scenarios to reach nZEB level and the possible cost reduction.

scholarly journals Analysis of energy potential of biofuels obtained from camelina sativa

2020 ◽  
Vol 180 ◽  
pp. 02005
Author(s):  
Madalina Ghilvacs ◽  
Razvan Carlanescu ◽  
Maria Paraschiv ◽  
Malina Prisecaru
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Experimental Tests ◽  
Camelina Sativa ◽  
Green Energy ◽  
Energy Potential ◽  
Increase Energy Efficiency ◽  
The Common ◽  
Calorific Power

In a world where the energy demand is increasing daily, energy efficiency and renewable energy play a major role. Our research comes to help fighting the biggest problem that our world is facing today, global warming. This study aims to evaluate the energy potential of biofuels obtained from camelina sativa in order to reduce fossil fuel dependence, greenhouse gas emissions and increase energy efficiency. Camelina (Camelina sativa L.) is a cruciferous oilseed plant belonging to the Brassicaceae (mustard) family with the common name false flax and gold of pleasure. Since camelina can grow under different conditions without being a competitor of food land, this energetic plant can be used for production of both, firstand second-generation biofuels. In our study we determined the elemental analysis of the subproducts obtained from camelina sativa, through experimental tests, and we built a mathematical model to determine the calorific power and to simulate the burning of the biofuels into a steam generator in order to analyse the energy potential. The results show us that the biofuels obtained from camelina sativa can represent an alternative to fossil fuels and should be considered in the transition to green energy.

scholarly journals The Zero-Energy Idea in Districts: Application of a Methodological Approach to a Case Study of Epinlieu (Mons)

2019 ◽  
Vol 11 (17) ◽  
pp. 4814
Author(s):  
Koutra ◽  
Pagnoule ◽  
Galatoulas ◽  
Bagheri ◽  
Waroux ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Methodological Approach ◽  
Holistic Approach ◽  
Energy Resources ◽  
Zero Energy ◽  
Scientific Discussion ◽  
Current Context ◽  
Initial Measure

Rapidly increasing global energy demand has raised concerns about the exhaustion of energy resources and the consequent heavy environmental impact. Improving energy efficiency in cities comprises an initial measure for addressing these phenomena. Within the current context of globalization, EU initiatives and policy targets have been proposed in order to revise urban development strategies and motivate its member states (MSes) toward “zero-energy objectives”. Providing a methodological approach with a simulation district analysis, the present article summarizes how this challenge was analyzed in an existing district in Belgium. This study contributes to the scientific discussion by analyzing the applicability of a holistic approach to zero-energy objectives on a larger scale.

Green Retrofit Energy Efficiency Potential on Existing Building Envelope for Residential and Non-Residential Building

2021 ◽  
pp. 1227-1257
Author(s):  
Robert Staiger
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Residential Buildings ◽  
Ecological Impact ◽  
Residential Building ◽  
Building Envelope ◽  
Existing Building ◽  
Primary Energy Demand ◽  
Energy Efficiency Potential

The chapter deals with the green energetic consideration of today's building envelopes for residential and non-residential buildings. It investigates the energetic effects the envelopes have on energy efficiency, energy consumption, material use, sustainable use of resources, lifetime considerations, economic and ecological impact. Today's it is estimated that approximately 30% of the annual primary energy demand for residential and non-residential buildings is needed. Energy resources for heat, electricity, air conditioning and cooling purposes, fossil fuels in form of gas and liquid are predominantly used.

scholarly journals Review on Optimising Solar PV Efficiency by Using Tracking and Cooling System

2019 ◽  
Vol 5 (4) ◽  
pp. 6
Author(s):  
Anil Khatri ◽  
Prof. Nitin Tenguria
Keyword(s):  
Solar Energy ◽  
Energy Demand ◽  
Fossil Fuels ◽  
New Technologies ◽  
Cooling System ◽  
Mechanical Energy ◽  
Primary Source ◽  
Energy System ◽  
Solar Pv ◽  
Photovoltaic Panel

The increasing energy demand, continuous drawback of the existing sources of fossil fuels and increasing concern about environmental pollution pushed researchers to explore new technologies for the production of electricity from clean sources, renewable such as solar, wind etc. Solar energy is the oldest primary source of energy. It is a source of clean, renewable energy and it is found in abundance in every part of the world. Using solar energy is possible to convert it into mechanical energy or electricity with adequate efficiency. In this paper of the present of principal of solar cell and the temperature effect. And the Information about the quality and amount of solar energy available at a specific location is of prime importance for the development of a solar energy system. However, the amount of electricity that is obtained is directly proportional to the intensity of sunlight falling on the photovoltaic panel.

Analysis of Energy-Efficiency Improvements in Single-Family Dwellings in Concepcion, Chile

2014 ◽  
Vol 39 (2) ◽  
pp. 57-68
Author(s):  
Rodrigo Garcia Alvarado ◽  
Jaime Soto ◽  
Cristian Muñoz ◽  
Ariel Bobadilla ◽  
Rodrigo Herrera ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Energy Use ◽  
Low Cost ◽  
Geographic Area ◽  
Single Family ◽  
Construction Costs ◽  
Environmental Improvement ◽  
Energy Simulations

The current depletion of fossil fuels and environmental degradation are requiring greater energy efficiency in buildings, particularly in the residential sector. However, environmental improvement actions for dwellings are usually based on general considerations, without identifying the most appropriate measurements to be taken in each case, or reviewing their application with stakeholders. This article puts forward a strategy to propose effective and feasible modifications in the design or refurbishment of single-family homes to reduce energy use while maintaining indoor comfort. The improvements proposed are based on dynamic energy simulations of individual models adapted to local realities that can be carried out by regular professionals. The process includes the review of studies and information on the geographic area, and compilation of the constructive features and occupancy data of each house to create a proper energy behaviour model. Possible improvements to the building are then simulated separately in each model and the results recorded. Subsequently, a budgetary analysis of these alternatives according to construction costs and financial projections is carried out in order to identify retrofit packages and consult the opinions of residents and builders. The application of this strategy is demonstrated in the study of several houses in Concepción, Chile, where different sets of measures have been identified to achieve high reductions in energy demand while having low cost and being highly appreciated by the participants. This provides a methodology for developing and validating effective solutions for the environmental improvement of existing dwellings and new housing projects.

scholarly journals Exploring Climate-Change Impacts on Energy Efficiency and Overheating Vulnerability of Bioclimatic Residential Buildings under Central European Climate

2021 ◽  
Vol 13 (12) ◽  
pp. 6791
Author(s):  
Luka Pajek ◽  
Mitja Košir
Keyword(s):  
Climate Change ◽  
Energy Efficiency ◽  
Energy Efficient ◽  
Energy Demand ◽  
Energy Use ◽  
Residential Buildings ◽  
Building Design ◽  
Temperate Climate ◽  
Design Parameters ◽  
Central European

Climate change is expected to expose the locked-in overheating risk concerning bioclimatic buildings adapted to a specific past climate state. The study aims to find energy-efficient building designs which are most resilient to overheating and increased cooling energy demands that will result from ongoing climate change. Therefore, a comprehensive parametric study of various passive building design measures was implemented, simulating the energy use of each combination for a temperate climate of Ljubljana, Slovenia. The approach to overheating vulnerability assessment was devised and applied using the increase in cooling energy demand as a performance indicator. The results showed that a B1 heating energy efficiency class according to the Slovenian Energy Performance Certificate classification was the highest attainable using the selected passive design parameters, while the energy demand for heating is projected to decrease over time. In contrast, the energy use for cooling is in general projected to increase. Furthermore, it was found that, in building models with higher heating energy use, low overheating vulnerability is easier to achieve. However, in models with high heating energy efficiency, very high overheating vulnerability is not expected. Accordingly, buildings should be designed for current heating energy efficiency and low vulnerability to future overheating. The paper shows a novel approach to bioclimatic building design with global warming adaptation integrated into the design process. It delivers recommendations for the energy-efficient, robust bioclimatic design of residential buildings in the Central European context, which are intended to guide designers and policymakers towards a resilient and sustainable built environment.

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