scholarly journals ICT Development and Sustainable Energy Consumption: A Perspective of Energy Productivity

2018 ◽  
Vol 10 (7) ◽  
pp. 2568 ◽  
Author(s):  
Zheming Yan ◽  
Rui Shi ◽  
Zhiming Yang
Keyword(s):  
Energy Consumption ◽  
Energy Use ◽  
Sustainable Energy ◽  
General Purpose ◽  
Productivity Index ◽  
Net Energy ◽  
Energy Productivity ◽  
Productivity Improvement ◽  
Ict Development ◽  
Saving Effect

The information and communication technology (ICT) is closely related to the future of global energy consumption, not only because the ICT equipment itself increasingly consumes energy, but also because it is a general-purpose technology which may affect energy use of almost all sectors. Given the controversy over the net energy-saving effect of ICT, this paper focuses on a new perspective, i.e., energy productivity, to investigate the relationship between ICT development and energy consumption. Using a data panel of 50 economies over the period of 1995 to 2013, results of the Malmquist energy productivity index generally indicate an unbalanced development of energy productivity across the globe, while results of the patent-based ICT knowledge stock indicate a huge gap of ICT development comparing the high-income economies with the others. Furthermore, regression results indicate that ICT development is significantly related to energy productivity improvement. Finally, this paper suggests accelerating ICT development in underdeveloped economies, given the global common task of sustainable energy consumption.

Analysis of Energy Consumption for Protected Grape Production System in China

2014 ◽  
Vol 1073-1076 ◽  
pp. 2468-2472
Author(s):  
Dong Tian ◽  
Jing Wang ◽  
Jian Ying Feng
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Total Energy ◽  
Energy Use ◽  
Survey Method ◽  
Net Energy ◽  
Average Yield ◽  
Energy Productivity ◽  
Energy Inputs ◽  
Use Efficiency

This study examines energy consumption of inputs and output used in protected grape production, and aims at to find relationship between energy inputs and yield in the major protected grape producing regions in China. For this purpose, the data were collected from 516 questionnaires which included 304 effective ones by questionnaire survey method. The results indicated that total energy inputs were 57697.84 MJha-1where the Chemical with (32.4%) and Fertilizer with about (21.1%) were the major energy consumers. About 53.4% of the total energy inputs used in protected grape production was indirect while 46.6% was direct. The non-renewable shared about 78% whereas the renewable energy did 22%. Average yield and energy consumption are calculated as 25367.22Kgha-1and 299333.2MJha-1. Energy use efficiency, energy productivity, specific energy and net energy were 5.18, 0.44 kgMJ-1, 2.27 MJkg-1and241635.36 MJha-1, respectively.

scholarly journals Energy budget and carbon footprint in a wheat and maize system under ridge furrow strategy in dry semi humid areas

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Changjiang Li ◽  
Shuo Li
Keyword(s):  
Carbon Footprint ◽  
Energy Budget ◽  
Agricultural Development ◽  
Energy Use ◽  
Cropping System ◽  
Energy Output ◽  
Net Energy ◽  
Energy Productivity ◽  
Carbon Efficiency ◽  
Net Returns

AbstractThe well-irrigated planting strategy (WI) consumes a large amount of energy and exacerbates greenhouse gas emissions, endangering the sustainable agricultural production. This 2-year work aims to estimate the economic benefit, energy budget and carbon footprint of a wheat–maize double cropping system under conventional rain-fed flat planting (irrigation once a year, control), ridge–furrows with plastic film mulching on the ridge (irrigation once a year, RP), and the WI in dry semi-humid areas of China. Significantly higher wheat and maize yields and net returns were achieved under RP than those under the control, while a visible reduction was found for wheat yields when compared with the WI. The ratio of benefit: cost under RP was also higher by 10.5% than that under the control in the first rotation cycle, but did not differ with those under WI. The net energy output and carbon output followed the same trends with net returns, but the RP had the largest energy use efficiency, energy productivity carbon efficiency and carbon sustainability among treatments. Therefore, the RP was an effective substitution for well–irrigated planting strategy for achieving sustained agricultural development in dry semi-humid areas.

scholarly journals Energy Consumption in Public Buildings: The Determinants of Occupants’ Behavior

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3586
Author(s):  
Akvile Cibinskiene ◽  
Daiva Dumciuviene ◽  
Meda Andrijauskiene
Keyword(s):  
Energy Consumption ◽  
Energy Use ◽  
New Technologies ◽  
Sustainable Energy ◽  
Environmental Issues ◽  
Public Buildings ◽  
Personal Norms ◽  
Daily Behavior ◽  
Scientific Papers ◽  
Female Employees

Considering the critical amount of power consumption in public buildings, sustainable energy use in the workplace can present an opportunity to tackle the worldwide problem of climate change. A systematic literature review revealed that, though the majority of scientific papers emphasize the importance of appliances and new technologies, human behavior in this area is not less significant. It can contribute to the reduction of energy use and CO2 emissions and address a number of environmental issues. The main purpose of this work is to analyze and compare the research performed on the topic of the determinants of sustainable energy consumption and investigate their impacts on the behavior of employees in three public buildings in Greece. The questionnaire survey discloses that, despite the organizations paying the bill, the employees believe that saving energy at work is important. The results also show that female employees feel more responsible for energy problems, such as the exhaustion of energy sources or global warming. Finally, a regression analysis affirms that the willingness to save a substantial amount of energy at the workplace is greater when employees have higher personal norms, that is, they feel morally obliged to consider the environment and nature in their daily behavior.

scholarly journals Determinants of Energy Saving: Evidence from a Vocational School in Greece

Energies ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3647 ◽  
Author(s):  
Daiva Dumciuviene ◽  
Akvile Cibinskiene ◽  
Meda Andrijauskiene
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Use ◽  
Residential Buildings ◽  
Sustainable Energy ◽  
Theoretical Background ◽  
Vocational School ◽  
School Buildings ◽  
Saving Behavior ◽  
Important People

For this paper, the authors theoretically analyzed the determinants of energy saving and sustainable energy consumption in schools. Much research exists on energy-saving behavior in residential buildings. However, there is a lack of focus on public buildings and schools. A systematic literature review was conducted in order to construct the theoretical background for the research of school buildings, which are substantially less investigated. The determinants of sustainable energy use in schools were grouped together into three groups: (i) psychological and social, (ii) sociodemographic and economic, and (iii) contextual. The influence of these determinants on energy consumption was investigated empirically by conducting a questionnaire survey in a vocational school in Greece. The results reveal that the intention to save a substantial amount of energy in a vocational school in Greece is greater when students feel morally obliged to consider the environment and nature, believe that it is in their power to avoid unnecessary power consumption, and are positively influenced by teachers, classmates, and other important people in their lives.

Analysis of the Nexus Between Smart Grid, Sustainable Energy Consumption, and the Smart City

2020 ◽  
pp. 169-191
Author(s):  
Luke A. Amadi ◽  
Prince I. Igwe
Keyword(s):  
Energy Consumption ◽  
Smart Grid ◽  
Power Supply ◽  
Smart City ◽  
Energy Use ◽  
Sustainable Energy ◽  
The Core ◽  
The Future

Since the 1990s, the field of smart grid has attempted to remedy some of the core development deficiencies associated with power supply in the smart city. While it seemingly succeeds in provision of electricity, it fails to fully resolve the difficulties associated with sustainable energy consumption. This suggests that the future of smart grid analytics in the smart city largely depends on efficiency in energy consumption which integrates sustainability in the overall energy use. This chapter analyzes the nexus between smart grid, sustainable energy consumption, and the smart city.

Energy use and Economic Analysis for Achieving Target Yield through Site Specific Nutrient Management in Soybean (Glycine max L.)- Chickpea Cropping System (Cicer arietinum L.) 

2020 ◽  
Author(s):  
Anand G. Patil ◽  
A.S. Halepyati ◽  
B.M. Chittapur
Keyword(s):  
Crop Production ◽  
Energy Use ◽  
Block Design ◽  
Cropping System ◽  
Research Station ◽  
Net Energy ◽  
Energy Productivity ◽  
Randomized Block Design ◽  
Target Yield ◽  
3.0 T

Background: The measure of energy flow in crop production system provides a good indicator of the production of technological aspects of crop production systems in agriculture. Sustainable agricultural management technologies should be studied in terms of increased productivity, profitability, energy saving and efficiency of agricultural inputs usage by using efficiency indices and sustainable indicators. Methods: A field experiment was conducted at Agriculture Research Station, Janawada, Bidar during kharif and rabi seasons for two consecutive years (2014-15 and 2015-16) to know the energy use for achieving target yield. The experiement was laid out in randomized block design with three replications. The treatments viz., The two genotypes of soybean (JS335 and DSB 21) and chickpea (JG 11 and GBM 2) were tested for target yield of 2.0 t ha-1, 2.5 t ha-1, 3.0 t ha-1, 3.5 t ha-1, farmers practice and RDF were tested in medium black soils in randomized block design with three replications. The soil testing was carried out to determine the quantity of major nutrient for different target yields. Result: The experimental results revealed that the significantly higher energy efficiency (5.28 MJ ha-1), net energy (1,71,039.00 MJ ha-1), energy productivity (0.40 kg MJ-1), energy intensity (1,71,039.00 MJ ha-1) in physical terms (13.29 MJ kg-1) and economic terms (3.68 MJ Rs.-1), crop profitability (723.53 Rs.ha-1 day-1), system profitability (417.05 Rs.ha-1day-1) and relative economic efficiency (2.75) and soybean equivalent yield (5683 kg ha-1) were noticed in JS 335/JG 11 + target yield 3.0 t ha-1 compared to rest of the treatments. Thus, it could be concluded that various efficiency indices also used as alternative indices for achieving target yield in cropping system.

Analysis of Energy Demand and Smart Grid Policy-Making Issues of China

2012 ◽  
Vol 260-261 ◽  
pp. 576-580
Author(s):  
Sheng Xia Cai
Keyword(s):  
Energy Consumption ◽  
Smart Grid ◽  
Energy Demand ◽  
Energy Use ◽  
Energy Utilization ◽  
Net Energy ◽  
Urgent Task ◽  
Policy Suggestions ◽  
Fossil Fuel Energy ◽  
Smart Grid Technology

Energy demand is steadily increasing in the world. People face challenges to meet this demand. Smart grid technology is helpful to renewable energy utilization and thus is drawn more and more attention. This paper makes a comparison of several indicators among five countries or districts from 2002 to 2010. These indicators include energy use indicator, GDP per unit of energy use indicator, net energy imports indicator, CO2 emissions indicator, fossil fuel energy consumption indicator, and Alternative and nuclear energy indicator. From the trend analysis of these indicators, it can be seen that developing countries especially China has a rapid increase in energy consumption and have a high environment protection pressure. Hence smart grid development is an urgent task for China. Some issues in the development of smart grid are discussed and some policy suggestions are presented.

scholarly journals Energy Efficiency of Continuous Rye, Rotational Rye and Barley in Different Fertilization Systems in a Long-Term Field Experiment

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 229
Author(s):  
Gerhard Moitzi ◽  
Reinhard W. Neugschwandtner ◽  
Hans-Peter Kaul ◽  
Helmut Wagentristl
Keyword(s):  
Energy Efficiency ◽  
Total Energy ◽  
Energy Input ◽  
Energy Use ◽  
Energy Output ◽  
Winter Rye ◽  
Net Energy ◽  
Energy Productivity ◽  
Total Energy Input ◽  
Use Efficiency

A goal in sustainable agriculture is to use fossil energy more efficiently in crop production. This 60-year-old experiment on a silt loam chernozem investigated effects of fertilization (unfertilized control, mineral fertilizer (NPK) and farmyard manure (FYM)) and rotation (continuous winter rye (CR), winter rye in rotation (RR), spring barley in rotation (SB) on diesel fuel consumption, total energy input (made of both direct and indirect inputs), crop yield, energy output, net-energy output, energy intensity, energy productivity and energy use efficiency. The input rates of fertilizer, herbicides and seeds were set constant during the experiment. Soil tillage was done with a moldboard plough with subsequent combined seedbed preparation and seeding. The mean calculated total energy input was highest in NPK with 11.28 GJ ha−1 and lowest in the unfertilized control with 5.00 GJ ha−1. Total energy input for FYM was intermediate with 6.30 GJ ha−1. With energetic consideration of NPK nutrients in FYM the total energy input increased to the level of NPK. The share of the fertilizer energy on the total energy input was 49% for NPK. Fertilization with FYM and NPK increased yield and energy output considerably, especially of CR and SB which attained about doubled values. Crop rotation also increased the yield and energy output, especially of unfertilized rye, which attained values increased by about 75%. Fertilization with FYM resulted in the highest energy efficiency as the net-energy output, the energy productivity and the energy use efficiency were higher but the energy intensity was lower compared to unfertilized controls and NPK. When the nutrients in FYM were also energetically considered, the energy efficiency parameters of FYM decreased to the level of the NPK treatment. Crop rotation increased the energy efficiency of winter rye compared to the monoculture.

scholarly journals The The Potential of Sustainable Energy Resources in Eritrea: Solar Energy - An Overview

2019 ◽  
Vol 15 (4) ◽  
pp. 243-254
Author(s):  
Mohammad Afsar Alam Afsar
Keyword(s):  
Energy Consumption ◽  
Solar Energy ◽  
Sustainable Energy ◽  
Energy Resources ◽  
Standard Of Living ◽  
Energy Sources ◽  
World Population ◽  
Net Energy ◽  
Human Beings ◽  
Per Capita

Energy is the prerequisite and most universal measure of all kinds of work by human beings. Everything in this world is the expression of flow of energy in one of its forms. Sustainable resources of energies are those that do not deplete the Earth’s natural resources and are as environmentally benign as possible. These sources are sustainable in that they can be managed to ensure they can be used indefinitely without degrading the environment (Renewable Energy Association, 2009). The energy resources available can be divided into three types. These are primary energy sources (coal, oil, natural gas, uranium) which provide a net supply of energy, secondary energy sources (solar energy, wind energy, hydro energy etc.) which provide no net energy, and supplementary energy sources (geothermal and  tidal) whose net energy yield is zero. Energy is an important input in all sectors of any country’s economy.  The standard of living of any given country can be directly related to per capita energy consumption. Energy crisis is due to the rapid growth of world population and the improved standard of living of human beings. The per capita energy consumption is a measure of the per capita income or it is a measure of the prosperity of the nation.  As the world population is growing at a faster rate, so the conventional sources of energy are depleting on the one hand and its uses are adversely affecting the environment on the other hand. If it will be continued with the same pace, it may be exhausted by the beginning of the next century.  Nuclear energy requires skilled technicians and poses the safety as regards to radioactive waste disposal. Therefore, solar energy and other non-conventional energy sources are the sources; those which are to be utilized in the future. In this paper an attempt has been made to investigate the Potentials of sustainable energy resources in Eritrea with special reference to solar energy. The present study will also explore the intensity of global solar radiation reaching on a horizontal surface over Eritrea. This will be purely done by assessing the degree of solar energy penetration on Eritrea. The paper aims at discussing the cheaper and cleaner use of which is vital to the Eritrean economy and the environment as well.

scholarly journals Mapping evidence of individuals’ sustainable consumption behaviour and energy or transport use in Africa: A scoping review

2021 ◽  
Vol 10 (6) ◽  
pp. 369-382
Author(s):  
Peter Ansu Mensah ◽  
Monica Ansu Mensah
Keyword(s):  
Energy Consumption ◽  
Scoping Review ◽  
Environmental Sustainability ◽  
Energy Use ◽  
Data Extraction ◽  
Sustainable Energy ◽  
Sustainable Consumption ◽  
Inclusion Criteria ◽  
African Countries ◽  
Consumption Behaviour

The study aims to systematically map and describe the evidence on individual’s sustainable consumption behaviour and energy and transport use in Africa. The paper employed Arskey and O’Malley’s’ framework of 2005 as a guide to conduct a scoping review. Using keywords separated by Boolean terms (AND/OR) with all limiters removed, relevant published studies in Science Direct, SCOPUS, and Google Scholar were searched. Full-text screening guided by the inclusion criteria was independently conducted and data extraction was done using a piloted form to ensure the accuracy and reliability of the data. The results revealed that out of 176 studies, six met this study’s inclusion criteria and were included for data extraction. Among the six included studies, two were multi-country studies involving African countries, and study each was conducted in Ghana, Mauritius, South Africa, and Egypt. Of the included studies, five were on sustainable energy consumption domain, one on energy use and recycling behaviour, and the factors influencing sustainable energy consumption; price, income, urbanization, intention, attitudes, subjective norms and personal values. However, we found no evidence on individual’s sustainable consumption behaviour and transport use. Concluding, the results suggest that limited studies on sustainable consumption behaviour of energy and transport use are found in Africa. Therefore, further studies are needed to protect the gains made so far on environmental sustainability as well as to encourage and improve the individual’s sustainable consumption practices.

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