scholarly journals Recent trends and issues in energy conservation technologies

2019 ◽  
Vol 1 (1) ◽  
pp. 33-40
Author(s):  
Ömer Faruk Ulusoy ◽  
Erkan Pektaş
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Energy Demand ◽  
Industrial Revolution ◽  
Renewable Energy Sources ◽  
International Energy Agency ◽  
Advanced Technology ◽  
Energy Agency ◽  
The World

Energy efficiency is a set of measures to prevent the loss of energy in gas, steam, air and electricity, to reduce energy demand by recycling and evaluating various wastes, or to reduce production by advanced technology, more efficient energy resources, advanced industrial processes, and energy recovery.  The International Energy Agency announced that world energy consumption increased by 45% since 1980 and would be 70% higher by 2030 [1]. The energy policy of the future will be on saving, energy efficiency and renewable energy trilogy. Today, with the industrial revolution, the environmental problems and the damages caused by the world we live in today have reached the dimensions that threaten human health and ecological balance. Considering that the energy consumed in the world is in buildings, every measure that reduces energy consumption is very important in terms of improving life conditions. For this purpose, the importance of renewable energy sources in the design of energy architecture principles in energy efficiency and sustainable environments is stated.

scholarly journals State of the Art on Modeling and Optimization of Smart Electricity Networks

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Power Systems ◽  
Greenhouse Gas ◽  
Energy Demand ◽  
State Of The Art ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Improve Energy Efficiency ◽  
The World

The increase in population and industrialization has increased the consumption of electricity. Currently, it is impossible to live without electricity. Indeed, it is necessary for the economic, social and industrial progress in all the countries of the world. This is why we are always asked to develop all types of energy to produce clean and safe to improve energy efficiency. Indeed, the use of new renewable energy sources helps to mitigate greenhouse gas emissions and dependence on centralized energy sickles. The difficulties of renewable energy-based power systems lie in their production, which is not controllable and may not meet the increase in energy demand.

scholarly journals Reviewing Usage, Potentials, and Limitations of Renewable Energy Sources

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2906 ◽  
Author(s):  
George E. Halkos ◽  
Eleni-Christina Gkampoura
Keyword(s):  
Climate Change ◽  
Energy Source ◽  
Renewable Energy ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
International Energy Agency ◽  
High Energy ◽  
Energy Sources ◽  
Energy Agency ◽  
Address Climate Change

The world’s ever-increasing population, combined with economic and technological growth and a new, modern way of life, has led to high energy demand and consumption. Fossil fuels have been the main energy source for many years, but their use has many negative impacts on the environment. This has made the transition to renewable energy sources necessary in order to address climate change and meet the 1.5 °C goal. This paper is a review of the different types of renewables, their potentials and limitations, and their connection to climate change, economic growth, and human health. It also examines consumers’ willingness to pay for renewables in different countries, based on the existing literature. IEA (International Energy Agency) data are analyzed, concerning renewables’ current use, the evolution of their usage, and forecasts about their future usage. Finally, policies and strategies are recommended in order to address climate change and fully integrate renewables as a sustainable energy source.

scholarly journals Role of Renewable Energy in India’s Energy Basket

2021 ◽  
Vol 927 (1) ◽  
pp. 012045
Author(s):  
G P Girish ◽  
Sweta Singh
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
International Energy Agency ◽  
Energy Sources ◽  
Energy Agency ◽  
Policy Makers ◽  
The World ◽  
Installed Capacity

Abstract World is witnessing a trend of countries adopting renewable energy sources viz.a.viz. Fossil fuels dominated energy sources. International Energy Agency believes that by 2025 energy produced from Renewable energy sources will most likely surpass electricity generated by coal. India being one of the largest producer and consumer of electricity in the world is already one of the largest producers of energy from renewable sources in the world with 38%+ of India’s total installed capacity from renewable energy sources. In this study we analyze and review the role that Renewable Energy is going to play in India’s Energy basket. With growing dependence on non-fossil fuels, it’s imperative for industry participants, policy makers, governments and researchers to decipher what is the role that is going to be played by energy produced from renewable energy sources in India’s energy basket from a strategic as well as policy making perspective.

scholarly journals Energy Consumption and Spatial Assessment of Renewable Energy Penetration and Building Energy Efficiency in Malaysia: A Review

2021 ◽  
Vol 13 (16) ◽  
pp. 9244
Author(s):  
Shaban R. S. Aldhshan ◽  
Khairul Nizam Abdul Maulud ◽  
Wan Shafrina Wan Mohd Jaafar ◽  
Othman A. Karim ◽  
Biswajeet Pradhan
Keyword(s):  
Energy Efficiency ◽  
Information System ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Solar Radiation ◽  
Renewable Energy Sources ◽  
Primary Energy ◽  
Geographical Information ◽  
Spatial Assessment ◽  
The World

The development of sustainable energy systems is very important to addressing the economic, environmental, and social pressures of the energy sector. Globally, buildings consume up to 40% of the world’s total energy. By 2030, it is expected to increase to 50%. Therefore, the world is facing a great challenge to overcome these problems related to global energy production. Malaysia is one of the top consumers of primary energy in Asia. In 2018, primary energy consumption for Malaysia was 3.79 quadrillion btu at an average annual rate of 4.58%. In this paper, we have carried out a detailed literature review on several previous studies of energy consumption in the world, especially in Malaysia, and how geographical information system (GIS) methods have been used for the spatial assessment of energy efficiency. Indeed, strategies of energy efficiency are essential in energy policy that could be created using various approaches used for energy savings in buildings. The findings of this review reveal that, for estimating energy consumption, exploring renewable energy sources, and investigating solar radiation, several geographic information system techniques such as multiple criteria decision analysis (MCDA), machine learning (ML), and deep learning (DL) are mainly utilized. The result indicates that the fuzzy DS method can more reliably determine the optimal PV farm locations. The 3D models are also regarded as an effective tool for estimating solar radiation, since this method generates a 3D model exportable to software tools. In addition, GIS and 3D can contribute to several purposes, such as sunlight access to buildings in urban areas, city growth prediction models and analysis of the habitability of public places.

scholarly journals Towards A Sustainable Green Design for Next-Generation Networks

2021 ◽  
Author(s):  
Isiaka Ajewale Alimi ◽  
Romilkumar K. Patel ◽  
Akeem O. Mufutau ◽  
Nelson J. Muga ◽  
Armando N. Pinto ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Wireless Networks ◽  
Energy Consumption ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Carbon Dioxide Emission ◽  
Green Energy ◽  
Green Communications ◽  
Resource Allocation Algorithm ◽  
Allocation Algorithm

Abstract The evolution in the Information and Communications Technologies industry results in excessive energy consumption and carbon dioxide emission in the wireless networks. In this context, energy efficiency in mobile networks has been attracting considerable attention as green communications and operational expenditures reduction depend on it. Although the Internet of Things is to be supported by devices that are low-energy consuming, the power consumption of the huge number to be connected for several applications and services demand significant attention. To offer insights into green communications, this paper reviews various energy efficiency improvement techniques. Also, we consider a hybrid model in which the main grid power and dynamically harvested green energy from renewable energy sources can be leveraged to support the energy demand of the radio access network. In this regard, we reformulate the energy consumption model and consider an energy-efficient power allocation algorithm for green energy optimization. Numerical results show that with resource allocation algorithm exploitation, the energy efficiency can be enhanced. Besides, the amount of the grid energy consumption can be considerably minimized, resulting in the greenhouse gas emissions reduction in the wireless networks.

scholarly journals Energy benchmarking in educational buildings in the city of Kragujevac - possibilities for energy efficiency improvement

2021 ◽  
Vol 18 (1) ◽  
pp. 95-114
Author(s):  
Ana Radojevic ◽  
Danijela Nikolic ◽  
Jasna Radulovic ◽  
Jasmina Skerlic
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Co2 Emissions ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Energy Sources ◽  
Efficiency Improvement ◽  
Energy Efficiency Improvement ◽  
Energy Benchmarking

The implementation of energy efficiency measures and use of renewable energy sources in educational buildings can significantly contribute to reducing energy consumption, but also to CO2 emissions in the entire public sector. The paper shows the comparison of energy consumption indicators for 61 elementary school buildings which have previously been divided in 12 groups, according to the period of construction and size, based on the national typology called TABULA, as the first step of further study on how to use the renewable energy sources. The aim of this paper is to use the energy benchmarking process to select representative facilities which are suitable for applying renewable energy sources, for their further energy efficiency improvement. Indicators of annual specific electricity consumption and CO2 emissions per unit area [kWh/m2] and per user [kWh/user] were calculated. After that, from two groups (in which the highest electricity consumption and CO2 emissions are 68.37% and 74.53% of the total consumption/ emissions), one representative facility was selected.

Energy and Energy Efficiency

2010 ◽  
pp. 1-9
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Nuclear Waste ◽  
Nuclear Power ◽  
Fossil Fuels ◽  
18Th Century ◽  
Renewable Energy Sources ◽  
Nuclear Power Engineering ◽  
Energy Sources ◽  
The World

Originally, coal was the main source of energy. It remains so throughout the 18th century during the period of the rapid industry development. Later on, oil and naphtha began to be used as energy sources and their usage expanded especially in 19th century. A special feature of the above mentioned fossil fuels is their long creation period – requiring millennia. They are a result of rotting of different plant and animal kinds. In comparison to the period of their formation, the period of their utilization is far shorter. In accordance with a number of existing statistics about 2050 year it may be talked about a depletion of the liquid fossil fuels, also, the world coal supplies are considered to last within the next 200 years. Therefore, the development of nuclear power engineering is considered to be one of the alternatives to generate energy. Recently, the nuclear power energy generation has been denied in many countries because of the risks associated with its generation and because these risks have been confirmed by serious accidents throughout the World. The storage of worked nuclear waste is also a problem and risky. The renewable energy sources are another possibility to generate energy.

scholarly journals How Much Energy Efficient are Renewable Energy Sources Cooperatives’ Initiatives?

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1136 ◽  
Author(s):  
Nikolaos Sifakis ◽  
Tryfon Daras ◽  
Theocharis Tsoutsos
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Smart Meters ◽  
Green Consumption ◽  
Consumption Behavior ◽  
The Difference ◽  
Actual Energy Consumption

In this paper is provided a systematic, in-depth, behavioral analysis of renewable energy sources cooperatives’ members. The analysis proved that in, on hand, there was a noticeable difference in the portion of affection of each proposed intervention on the actual energy consumption, which may be to even ten times more in some cases, and on the other hand, the difference in energy consumption between the analyzed groups was noticeable as well. So, implementing energy efficiency interventions of various types, such as technical support, special tariffs, energy generation schemes, and smart meters, seems to lead to substantial energy reductions to even more than 10%, cumulatively, and reduces the environmental footprint. Additionally, the majority of energy efficiency interventions applied by the renewable energy sources cooperatives are proved to be effective in achieving their primary goal, sensitizing members, and leading them to a more efficient energy consumption behavior (“greener”). The results of the analysis showed that each proposed intervention had played a different but nonetheless significant role in the diminishing of the energy consumption of the members and that there was a noticeable difference in energy consumption between the analyzed groups. The results of the analysis demonstrated more than 22 GWh totally in green consumption, and almost 4500 tons of CO2 saved.

scholarly journals Energy-Efficient Buildings, a step towards Sustainability in Pakistan

2019 ◽  
Vol 4 (4) ◽  
pp. 109-124
Author(s):  
Hashir Usman
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Thermal Comfort ◽  
Energy Efficient ◽  
Energy State ◽  
Renewable Energy Sources ◽  
Building Energy ◽  
Developed Countries ◽  
Zero Energy ◽  
The World

With every passing year, energy consumption in the world is increasing drastically. Most of the energy comes from fossil fuels which are also depleting in a fast manner. Buildings consume a significant amount of energy all over the world and the demand for energy is also increasing unremittingly in buildings. Developed countries are taking profound measures in order to make buildings energy efficient and sustainable by achieving nearly zero energy stage. Pakistan is facing a serious energy crisis from the past few decades. The building sector in Pakistan deserves special attention in this regard since the energy consumption in buildings in Pakistan is feverishly high. Many types of research have been carried out in Pakistan by the United Nations and Energy Department of Pakistan in order to devise applicable methods that not only provide thermal comfort to the occupants but also make a building energy efficient. Renewable energy also plays an important role in compensating building energy demands. It is easy to achieve nearly zero energy state in a good energy efficient building if it is coupled with renewable energy sources then it will make it self-sufficient in energy demand. A survey is also carried out to determine the thermal comfort of the occupants in different types of areas. Also, solar energy analysis is also taken into account to highlight the solar power potential in Pakistan. Several recommendations have also been suggested to implement energy efficiency measures in Pakistan.

scholarly journals ENERGY EFFICIENCY OF RENEWABLE ENERGY SOURCES: MODERNIZATION TOOLS FOR ENVIRONMENTAL SAFETY AND INNOVATIVE-INVESTMENT ACTIVITY

2021 ◽  
Author(s):  
Kateryna Kraus ◽  
Nataliia Kraus ◽  
Anna Pavluk
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Economic Security ◽  
Energy Sources ◽  
Energy Investment ◽  
Investment Activity ◽  
Difficult Situation ◽  
The World

The article examines the preconditions for the aggravation of environmental danger for Ukraine and the world as a whole, in particular in the context of the intensifying economic crisis. The long-term plans of the International Energy Agency to achieve “zero” carbon emissions by 2050 have been assessed. It was found that in order to ensure the growth of the world economy by the middle of the XXI century, it is necessary to increase energy efficiency, in particular in terms of active use of renewable energy sources. Energy efficient measures to ensure energy security of the urban agglomeration are summarized. In order to develop alternative energy sources, investments are needed in the energy sector (the annual share of investments in renewable sources in 2020 was 38%, which is $258.9 billion). Enhancement of energy efficiency and introduction of renewable energy sources should take place in the context of modernization of energy infrastructure of urban agglomerations: financing of technical re-equipment of energy assets, development of energy networks, reduction of energy intensity of industrial products, introduction of energy audit, etc. Ukraine has been ranked 8th in the world as one of the most attractive markets for renewable energy investment, but long-standing debt and incomplete energy market reform do not fully realize the potential (this is adversely affected by political mistakes, populist decisions, corruption and poor quality of energy management in Ukraine). It is proved that in the way of ecological safety creates barriers and a difficult situation with environmental protection, which significantly reduces the quality and comfort of life. It is proposed to create a strong environmental infrastructure in order to increase environmental security in the context of ensuring economic security; to introduce innovative ecological technologies; rationalize the processing of solid waste; to build modern waste processing plants, etc. Environmental legislation and governance in the field of energy policy is, unfortunately, a problematic area of current global change initiated by the EU to promote the use of environmentally friendly energy among EU member states.

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