scholarly journals Analysis of the Dependence between Energy Demand Indicators in Buildings Based on Variants for Improving Energy Efficiency in a School Building

2017 ◽  
Vol 26 (3) ◽  
pp. 31-41
Author(s):  
Marta Skiba ◽  
Natalia Rzeszowska
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Energy Use ◽  
Primary Energy ◽  
School Building ◽  
The European Union ◽  
Public Buildings ◽  
Additional Energy ◽  
The Impact ◽  
The Relationship

Abstract One of the five far-reaching goals of the European Union is climate change and sustainable energy use. The first step in the implementation of this task is to reduce energy demand in buildings to a minimum by 2021, and in the case of public buildings by 2019. This article analyses the possibility of improving energy efficiency in public buildings, the relationship between particular indicators of the demand for usable energy (UE), final energy (FE) and primary energy (PE) in buildings and the impact of these indicators on the assessment of energy efficiency in public buildings, based on 5 variants of extensive thermal renovation of a school building. The analysis of the abovementioned variants confirms that the thermal renovation of merely the outer envelope of the building is insufficient and requires the use of additional energy sources, for example RES. Moreover, each indicator of energy demand in the building plays a key role in assessing the energy efficiency of the building. For this reason it is important to analyze each of them individually, as well as the dependencies between them.

Sustainable energy solutions for thermal load in buildings - Role of heat pumps, solar thermal, and hydrogen-based cogeneration systems

2021 ◽  
pp. 1-25
Author(s):  
Praveen Cheekatamarla ◽  
Vishaldeep Sharma ◽  
Bo Shen
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Carbon Footprint ◽  
Energy Demand ◽  
Primary Energy ◽  
Heat Pumps ◽  
Total Carbon ◽  
Coefficient Of Performance ◽  
Renewable Energy Resources ◽  
The Impact

Abstract Economic and population growth is leading to increased energy demand across all sectors – buildings, transportation, and industry. Adoption of new energy consumers such as electric vehicles could further increase this growth. Sensible utilization of clean renewable energy resources is necessary to sustain this growth. Thermal needs in a building pose a significant challenge to the energy infrastructure. Supporting the current and future building thermal energy needs to offset the total electric demand while lowering the carbon footprint and enhancing the grid flexibility is presented in this study. Performance assessment of heat pumps, renewable energy, non-fossil fuel-based cogeneration systems, and their hybrid configurations was conducted. The impact of design configuration, coefficient of performance (COP), electric grid's primary energy efficiency on the key attributes of total carbon footprint, life cycle costs, operational energy savings, and site-specific primary energy efficiency are analyzed and discussed in detail.

OPTIONS TO IMPROVE THE ENERGY EFFICIENCY OF THE BUILDING OF A PRIMARY SCHOOL IN SŁUBICE

2017 ◽  
Vol 166 (46) ◽  
pp. 36-47
Author(s):  
Marta Skiba ◽  
Natalia Rzeszowska
Keyword(s):  
European Union ◽  
Energy Efficiency ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Energy Performance ◽  
Primary Energy ◽  
The European Union ◽  
Energy Characteristics ◽  
Current Guidelines

Climate change and sustainable energy use is one of the five long-term objectives of the European Union. The first stage of the activities involving the implementation of this task is to reduce energy consumption of buildings to a minimum by 2020 and, in the case of public buildings by 2019. The purpose of this article is a search for the optimal way of bringing the energy performance of an existing school to a level that enables implementation of the objectives of the European Union energy policy. An analysis of the current condition of the existing school building has been carried out and options of its deep thermal upgrading has been proposed to adjust each parameter the energy performance to current guidelines specified in the technical conditions. One of the possible ways to improve the energy efficiency of the school is the use of renewable energy sources as a means of improving energy characteristics in terms of primary energy PE, the other one - optimization of renovation spending.

Policy measures to improve energy efficiency in russian buildings: Forecast up to 2050

2016 ◽  
pp. 75-98 ◽  
Author(s):  
I. Bashmakov
Keyword(s):  
Energy Efficiency ◽  
Energy Use ◽  
Primary Energy ◽  
Economic Benefits ◽  
Additional Energy ◽  
Improve Energy Efficiency ◽  
Efficiency Measures ◽  
Housing Services ◽  
Policy Measures ◽  
Energy Efficiency Policies

The article presents a long-term forecast of costs and benefits associated with the implementation of additional energy efficiency policies in Russian buildings. In Russia, buildings are directly and indirectly responsible for 38% of primary energy use; at the same time, they have a large energy efficiency potential. The 10 assessed scenarios of implementing packages of policy measures to improve energy efficiency illustrate that it is possible to halve fossil fuel use while providing energy services to the buildings stock which is expected to double by 2050. Additional benefits are considered, such as reduced greenhouse gas emissions and air pollution and improved indoor comfort, employment growth, improved affordability of housing services for both residents and the public sector. The paper estimates the costs and economic benefits of the implementation of energy efficiency measures and policies in the buildings sector. It shows that a new model of economic growth in Russia should be based on improving the overall economic efficiency, including energy efficiency.

scholarly journals ENERGY EFFICIENCY OF EUROPEAN COUNTRIES AT PRESENT TIME

2018 ◽  
pp. 38-42
Author(s):  
M. Gnatyuk
Keyword(s):  
Energy Efficiency ◽  
Energy Use ◽  
Energy Intensity ◽  
Primary Energy ◽  
European Countries ◽  
Energy Resources ◽  
Quality Of Life Index ◽  
Per Capita ◽  
The Relationship

In this article, the relationship between energy consumption and GDP level has been analysed. The energy efficiency of European countries at present time based on the energy intensity of GDP and the quality of life index of the population has been explored. The efficiency level of the primary energy use through methods of system analysis and statistical calculations is determined. The relationship between the efficiency of the energy resources consumption by European states and the level of their economic development has been established. The presence of a significant imbalance in the energy intensity of GDP between European countries, namely between the economy in transition countries and developed countries of Europe has a much higher level of GDP per capita is revealed. The reason for this is that developed states of Europe have a more developed energy infrastructure in comparison with the former Soviet states. The energy-intensive and relatively powerful industrial sector consumes only a quarter of the energy resources consumed by EU countries due to its energy efficiency. Post-Soviet countries, although they consume less energy per capita, spend much more energy for own production of goods and services due to outdated transport infrastructure, poor green and renewable energy sources developing and transport, which significantly exceeds carbon dioxide and carbon monoxide emissions to the environment, therefore needs more fuel compared to transportation of developed European countries. The consistent patterns of primary energy consumption and its use by European states are revealed. Trends of reducing energy use and energy efficiency in the European countries have been analysed and considered. Energy efficiency of European countries through the quality of life index of the population, which takes into account the purchasing power index, the subsistence minimum, environmental pollution, the climate component, housing prices relative to the income of the population, time spent in traffic jams is analysed.

scholarly journals Energy Flexibility as Additional Energy Source in Multi-Energy Systems with District Cooling

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 519
Author(s):  
Alice Mugnini ◽  
Gianluca Coccia ◽  
Fabio Polonara ◽  
Alessia Arteconi
Keyword(s):  
Energy Source ◽  
Energy Demand ◽  
Energy Systems ◽  
Energy System ◽  
Energy Performance ◽  
Primary Energy ◽  
Energy Sources ◽  
Variable Load ◽  
Additional Energy ◽  
The Impact

The integration of multi-energy systems to meet the energy demand of buildings represents one of the most promising solutions for improving the energy performance of the sector. The energy flexibility provided by the building is paramount to allowing optimal management of the different available resources. The objective of this work is to highlight the effectiveness of exploiting building energy flexibility provided by thermostatically controlled loads (TCLs) in order to manage multi-energy systems (MES) through model predictive control (MPC), such that energy flexibility can be regarded as an additional energy source in MESs. Considering the growing demand for space cooling, a case study in which the MPC is used to satisfy the cooling demand of a reference building is tested. The multi-energy sources include electricity from the power grid and photovoltaic modules (both of which are used to feed a variable-load heat pump), and a district cooling network. To evaluate the varying contributions of energy flexibility in resource management, different objective functions—namely, the minimization of the withdrawal of energy from the grid, of the total energy cost and of the total primary energy consumption—are tested in the MPC. The results highlight that using energy flexibility as an additional energy source makes it possible to achieve improvements in the energy performance of an MES building based on the objective function implemented, i.e., a reduction of 53% for the use of electricity taken from the grid, a 43% cost reduction, and a 17% primary energy reduction. This paper also reflects on the impact that the individual optimization of a building with a multi-energy system could have on other users sharing the same energy sources.

scholarly journals CO2 Intensities and Primary Energy Factors in the Future European Electricity System

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2165
Author(s):  
Sam Hamels
Keyword(s):  
Co2 Emissions ◽  
Energy Use ◽  
Conversion Factor ◽  
Unit Commitment ◽  
Primary Energy ◽  
High Temporal Resolution ◽  
The European Union ◽  
Electricity System ◽  
Energy Factors ◽  
Electrical Loads

The European Union strives for sharp reductions in both CO2 emissions as well as primary energy use. Electricity consuming technologies are becoming increasingly important in this context, due to the ongoing electrification of transport and heating services. To correctly evaluate these technologies, conversion factors are needed—namely CO2 intensities and primary energy factors (PEFs). However, this evaluation is hindered by the unavailability of a high-quality database of conversion factor values. Ideally, such a database has a broad geographical scope, a high temporal resolution and considers cross-country exchanges of electricity as well as future evolutions in the electricity mix. In this paper, a state-of-the-art unit commitment economic dispatch model of the European electricity system is developed and a flow-tracing technique is innovatively applied to future scenarios (2025–2040)—to generate such a database and make it publicly available. Important dynamics are revealed, including an overall decrease in conversion factor values as well as considerable temporal variability at both the seasonal and hourly level. Furthermore, the importance of taking into account imports and carefully considering the calculation methodology for PEFs are both confirmed. Future estimates of the CO2 emissions and primary energy use associated with individual electrical loads can be meaningfully improved by taking into account these dynamics.

scholarly journals Impact of Passive Energy Efficiency Measures on Cooling Energy Demand in an Architectural Campus Building in Karachi, Pakistan

2021 ◽  
Vol 13 (13) ◽  
pp. 7251
Author(s):  
Mushk Bughio ◽  
Muhammad Shoaib Khan ◽  
Waqas Ahmed Mahar ◽  
Thorsten Schuetze
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Electricity Consumption ◽  
Information Modeling ◽  
Base Case ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
The Impact ◽  
Cooling Energy Demand ◽  
Campus Building

Electric appliances for cooling and lighting are responsible for most of the increase in electricity consumption in Karachi, Pakistan. This study aims to investigate the impact of passive energy efficiency measures (PEEMs) on the potential reduction of indoor temperature and cooling energy demand of an architectural campus building (ACB) in Karachi, Pakistan. PEEMs focus on the building envelope’s design and construction, which is a key factor of influence on a building’s cooling energy demand. The existing architectural campus building was modeled using the building information modeling (BIM) software Autodesk Revit. Data related to the electricity consumption for cooling, building masses, occupancy conditions, utility bills, energy use intensity, as well as space types, were collected and analyzed to develop a virtual ACB model. The utility bill data were used to calibrate the DesignBuilder and EnergyPlus base case models of the existing ACB. The cooling energy demand was compared with different alternative building envelope compositions applied as PEEMs in the renovation of the existing exemplary ACB. Finally, cooling energy demand reduction potentials and the related potential electricity demand savings were determined. The quantification of the cooling energy demand facilitates the definition of the building’s electricity consumption benchmarks for cooling with specific technologies.

scholarly journals Environmental Production Efficiency in the European Union Countries as a Tool for the Implementation of Goal 7 of the 2030 Agenda

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4593
Author(s):  
Katarzyna Cheba ◽  
Iwona Bąk
Keyword(s):  
European Union ◽  
Production Efficiency ◽  
Energy Use ◽  
The European Union ◽  
2030 Agenda ◽  
European Union Countries ◽  
Taxonomic Methods ◽  
Development Levels ◽  
The Relationship ◽  
The Eu

The main purpose of the paper is to present a proposal to measure the relationships between Goal 7 of the 2030 Agenda for Sustainable Development and one of the areas considered in the green growth concept: environmental production efficiency. Both of these areas illustrate the relationship between the natural environment and the economy, emphasizing transformations in the field of energy use. Selected taxonomic methods, TOPSIS, and multicriteria taxonomy, were applied to study the relationships between the two areas. The results of the EU countries classification showed a variety of countries’ development pathways within a single economic community. Despite continued attempts to equalize the development levels between European Union countries in many strategic areas, they remain highly diversified. That is also true for the areas analyzed in the paper, which is a disturbing situation, indicating that both strategies might not correlate in all respects. Further research into the relationships linking the remaining dimensions of both strategies is required.

scholarly journals Energy Performance Assessment of Innovative Building Solutions Coming from Construction and Demolition Waste Materials

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1226
Author(s):  
Beatriz Fraga-De Cal ◽  
Antonio Garrido-Marijuan ◽  
Olaia Eguiarte ◽  
Beñat Arregi ◽  
Ander Romero-Amorrortu ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Energy Demand ◽  
Energy Savings ◽  
Flow Analysis ◽  
Weather Conditions ◽  
Energy Performance ◽  
Construction And Demolition Waste ◽  
The European Union ◽  
Demolition Waste ◽  
The Impact

Prefabricated solutions incorporating thermal insulation are increasingly adopted as an energy conservation measure for building renovation. The InnoWEE European project developed three technologies from Construction and Demolition Waste (CDW) materials through a manufacturing process that supports the circular economy strategy of the European Union. Two of them consisted of geopolymer panels incorporated into an External Thermal Insulation Composite System (ETICS) and a ventilated façade. This study evaluates their thermal performance by means of monitoring data from three pilot case studies in Greece, Italy, and Romania, and calibrated building simulation models enabling the reliable prediction of energy savings in different climates and use scenarios. Results showed a reduction in energy demand for all demo buildings, with annual energy savings up to 25% after placing the novel insulation solutions. However, savings are highly dependent on weather conditions since the panels affect cooling and heating loads differently. Finally, a parametric assessment is performed to assess the impact of insulation thickness through an energy performance prediction and a cash flow analysis.

Eastern Orthodoxy and Europe

2021 ◽  
pp. 479-496
Author(s):  
Effie Fokas
Keyword(s):  
The Political ◽  
Historical Period ◽  
The European Union ◽  
Temporal Perspective ◽  
Eastern Orthodoxy ◽  
The Balkans ◽  
Political Reality ◽  
The One ◽  
The Impact ◽  
The Relationship

This chapter considers the relationship between ‘Orthodoxies’ and ‘Europes’, highlighting the multiplicity of Eastern Christian Orthodox approaches and attitudes towards Europe, from one majority Orthodox national context to another and one historical period to another, ranging from anti-Europeanism (and anti-Westernism) to Europhilism. It also draws attention to differences in Orthodox stances on the idea of Europe, on the one hand, and the political reality of the European unification project, on the other. A temporal perspective is particularly relevant in changing attitudes to the European Union. Special attention is paid to external perspectives on the relationship between ‘Orthodoxy’ and ‘Europe’, often politicized and influenced by the political turmoil in the Balkans. The chapter closes with reference to the situation of flux characterizing contemporary conceptions of Europe, and the impact of the latter on ‘Orthodoxy’ in relation to ‘Europe’.

Sign in / Sign up

Export Citation Format

Share Document