scholarly journals Choice of the Optimal Design and Operation of Multi-Energy Conversion Systems in a Prosecco Wine Cellar

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6252
Author(s):  
Davide Pivetta ◽  
Sergio Rech ◽  
Andrea Lazzaretto
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Natural Gas ◽  
Energy Conversion ◽  
Alternative Energy ◽  
High Energy ◽  
Maximum Efficiency ◽  
Absorption Chiller ◽  
Wine Production ◽  
Energy Demands

Despite the high energy consumption of wine making processes, little efforts have been spent so far, both at the industrial and scientific level, to search for alternative energy systems in wine cellars. In fact, almost all the existing cellars take electricity from the grid and burn natural gas or other fossil fuels to fulfil their energy demands. This paper analyses the energy demands of a real Prosecco wine cellar in the North East of Italy, which can be considered as a “reference” cellar for dimensions and wine production. The goal is to find the best energy conversion system in terms of maximum profits, efficiency and share of renewable energy utilization. Four alternative design configurations are proposed, and each one optimized considering the three objectives. Results show that a 35% gain in the maximum profits is obtained by including a natural gas fueled CHP internal combustion engine and an absorption chiller. This configuration is also the best one to achieve the maximum efficiency (61%), resulting in 18% reduction of primary energy consumption. Conversely, the utilization of a biomass boiler and an absorption chiller allows maximizing the share of renewable energy consumption, which is about 35% considering the existing availability of biomass from pruning harvesting and the relative limited surface available for photovoltaic generation. This option may become economically interesting when the price of natural gas increases of at least 50%.

scholarly journals THE CURRENT SITUATION AND WORLD TRENDS OF GREEN ENERGY DEVELOPMEN

2020 ◽  
Vol 1(13) ◽  
pp. 55-60
Author(s):  
Kateryna Redko ◽  
◽  
Oleksandra Furs ◽  
Keyword(s):  
Renewable Energy ◽  
Natural Gas ◽  
Electricity Market ◽  
Alternative Energy ◽  
Green Energy ◽  
Green Economy ◽  
Practical Significance ◽  
Regulatory Function ◽  
Capital Costs ◽  
Alternative Sources

As demand for electricity grows significantly, the main drivers of new capacity are the disposal of older, less efficient fossil fuel units; the near-term prospect of having tax credits for renewable energy; and long-term reductions in capital costs for renewable energy, especially solar photovoltaic. Low natural gas prices and favorable renewable energy costs make natural gas and renewable energy the main sources of new generation capacity by 2050. The main purpose of the scientific article is to cover the main problems of the electricity market of Ukraine, to analyze the process of promotion of green energy, to highlight the cases when the transition to alternative sources is a profitable process, in the context of uncertainty and rising prices for traditional energy sources. The article uses a number of general scientific and specific research methods, including methods of analysis and synthesis, scientific deduction and induction. The practical significance of the research is to develop recommendations for improving the state's regulatory function in the field of alternative energy. The large-scale introduction of non-traditional renewable energy in Ukraine will make a significant step in reducing the country's energy dependency, protecting the environment and creating the conditions for a country to join the European community. The scientific novelty is to study the stimulation of energy production using alternative sources, to study the creation of favorable economic conditions for the construction of alternative energy facilities, the development of a "green" economy and to ensure sustainable development of Ukraine. Conclusions and prospects for further research. In Ukraine, the alternative energy sector is developing slowly, but some structural shifts are noticeable, though far from planned. Many small and medium-sized enterprises have already installed solar panels in order to reduce the cost of production and generate additional profits. Further research requires the search for tools and mechanisms in the RES incentive system, with an assessment of the economic impact of their use, using modeling and forecasting methods and models. Keywords: electricity market, energy efficiency, energy intensity of the economy, renewable energy, green tariff

scholarly journals Life Cycle Cost of Solar Biomass Hybrid Dryer Systems for Cashew Drying of Nuts in India

2015 ◽  
Vol 15 (1) ◽  
pp. 22-33 ◽  
Author(s):  
Saravanan Dhanushkodi ◽  
Vincent H. Wilson ◽  
Kumarasamy Sudhakar
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Life Cycle Cost ◽  
Renewable Energy Sources ◽  
Cost Benefit ◽  
High Energy ◽  
Economic Feasibility ◽  
Small Scale ◽  
Cashew Nut ◽  
The Cost

Abstract Cashew nut farming in India is mostly carried out in small and marginal holdings. Energy consumption in the small scale cashew nut processing industry is very high and is mainly due to the high energy consumption of the drying process. The drying operation provides a lot of scope for energy saving and substitutions of other renewable energy sources. Renewable energy-based drying systems with loading capacity of 40 kg were proposed for application in small scale cashew nut processing industries. The main objective of this work is to perform economic feasibility of substituting solar, biomass and hybrid dryer in place of conventional steam drying for cashew drying. Four economic indicators were used to assess the feasibility of three renewable based drying technologies. The payback time was 1.58 yr. for solar, 1.32 for biomass and 1.99 for the hybrid drying system, whereas as the cost-benefit estimates were 5.23 for solar, 4.15 for biomass and 3.32 for the hybrid system. It was found that it is of paramount importance to develop solar biomass hybrid dryer for small scale processing industries.

Power System for Beautiful China

2021 ◽  
Vol 144 ◽  
pp. 14-21
Author(s):  
Vladimir P. Polevanov ◽  
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Natural Gas ◽  
Power System ◽  
Renewable Energy Sources ◽  
Primary Energy ◽  
Energy Resources ◽  
Energy Sources ◽  
Primary Energy Consumption ◽  
Leading Position

The growth in primary energy consumption in 2019 by 1.3% was provided by renewable energy sources and natural gas, which together provided 75% of the increase. China in the period 2010–2020 held a leading position in the growth of demand for energy resources, but according to forecasts, India will join it in the current decade.

scholarly journals Modern energetics: current problems in energy conversion and utilization of produced energy

2017 ◽  
Vol 89 (10) ◽  
pp. 1521-1534
Author(s):  
Michail V. Alfimov ◽  
Vladimir F. Razumov
Keyword(s):  
Natural Gas ◽  
Energy Conversion ◽  
Primary Energy ◽  
Energy Industry ◽  
Maximum Efficiency ◽  
Energy Sources ◽  
Rational Utilization ◽  
Global Energy ◽  
Physical Constraints ◽  
State Of Art

AbstractIn this study, we discussed the state-of-art in global energy industry in a historical retrospective and the forecast of its development for the next 25 years. At least in the nearest quarter of a century, the main source of primary energy will remain the chemical energy of different hydrocarbon fuels, including natural gas, coal, oil, and biofuels. In this context, of current importance becomes the problem of more rational utilization of produced energy. We analyzed the basic physical constraints that define a maximum efficiency of energy conversion and utiliztion of primary energy sources.

The Overview of the Development of Wind Energy

2014 ◽  
Vol 552 ◽  
pp. 107-110
Author(s):  
Xue Song Zhou ◽  
Hui Min Guo ◽  
You Jie Ma
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Wind Power ◽  
Alternative Energy ◽  
Power Market ◽  
High Energy ◽  
General Development ◽  
Wind Power Industry ◽  
High Level ◽  
Energy Converting

In the field of renewable energy, wind energy has one of the best prospects in all industries. It is a kind of clean, practical, economic and environmentally friendly alternative energy. It also has the advantages of high energy converting rate, large industrial scale、high level technology and so on. Thus in recent years, the developing trend of global wind power industry is rapid, and the growth tide of China has been enhanced significantly. This paper discusses the general development of wind power. Based on the overview of the development of wind energy and combined with the current situation of wind power market, the development trends of wind turbine were discussed. It also proposed the problems which were existed in domestic wind power market.

Operation Energy Consumption after the Renewal of an Elementary School

2014 ◽  
Vol 1057 ◽  
pp. 3-10
Author(s):  
Ivan Chmúrny
Keyword(s):  
Elementary School ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Natural Gas ◽  
Renewable Energy Sources ◽  
Energy Sources

Analysis of energy consumption during the operation of the renewed elementary school in Lietavská Lúčka, which uses renewable energy sources. The results are based on the consumption of natural gas and electricity according to data from the meters of market suppliers of energy from 2006 to 2013.

scholarly journals Determination and Application of Maximum Efficiency Curve of Crawler Electric Tractor Motors

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Jing Liu ◽  
Changgao Xia ◽  
Donglin Jiang ◽  
Gaogao Shang ◽  
Jiangyi Han ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Characteristic Curve ◽  
Operation Time ◽  
High Energy ◽  
Continuous Operation ◽  
Energy Utilization ◽  
Maximum Efficiency ◽  
Operating Efficiency ◽  
Drive Control ◽  
Full Charge

With the excessive use of fossil fuels such as oil, the energy crisis and environmental pollution have become important problems related to people’s livelihoods. In agriculture, as a new type of green agricultural machinery, the electric tractor has the advantages of high energy utilization and no exhaust emission. The motor is the core component of an electric tractor’s drive system. Its characteristics and control directly affect a tractor’s operating efficiency, operating quality, and energy consumption. A motor drive control scheme based on a characteristic curve at the maximum efficiency of an electric motor was adopted to address the problems of low motor power utilization and short continuous operation time on a full charge in electric tractors. By leveraging methods to obtain characteristic curves at the lowest fuel consumption for gasoline engines, we determined the characteristic curve at the maximum efficiency for a motor in a crawler-type electric tractor. Plowing is the most basic form of tractor operation, and it represents the agricultural work that accounts for most of a tractor’s use. A field test was conducted on the drive control in plowing operation based on the curve, and the energy consumed to plow each m2, continuous plowing operation time on a full charge, and operating efficiency were tested. The test results showed plowing power consumption per m2 of about 8.40 × 10−3 kWh and work efficiency of 707.07 m2/h. Compared with the traditional tractor, the cost of plowing 1 m2 by the crawler-type electric tractor was reduced by 20.3%–32.5%. Because the control improves operating efficiency, battery energy consumption is reduced and continuous operation time is extended; hence, the control achieves its purpose.

scholarly journals Renewable Energy Consumption and Economic Growth in Asia Pacific

2021 ◽  
Author(s):  
Pisi Bethania Titalessy
Keyword(s):  
Economic Growth ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Alternative Energy ◽  
Panel Data Analysis ◽  
Environmentally Friendly ◽  
Asia Pacific ◽  
Environmental Damage ◽  
Renewable Energy Consumption ◽  
The Impact

The problem of climate change is increasingly global and results in environmental damage due to the use of fossil energy in human activities. An increasing population will make energy consumption increase and can make things worse. Therefore, it is necessary to replace old energy with alternative energy that is more environmentally friendly and makes productivity effective and efficient. Renewable energy is pointed out as an alternative energy source that is environmentally friendly and the process is sustainable because it is always available in nature. Renewable energy is expected to increase the country's national income. This study aims to analyze the impact of renewable energy on economic growth in the Asia Pacific region as a whole. By using data from 2000-2015, panel data analysis in this study shows that Renewable Energy Consumption (REC) has a negative and significant relationship to economic growth, while renewable energy and combustible waste (CRW) has a significant and positive effect on economic growth.

scholarly journals Climate change and bank stability: The moderating role of green financing and renewable energy consumption in ASEAN

2020 ◽  
Author(s):  
Hafiz Waqas Kamran ◽  
Muhammad Haseeb ◽  
Thu Thuy Nguyen ◽  
V.C. Nguyen
Keyword(s):  
Climate Change ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Alternative Energy ◽  
Random Effect ◽  
Control Variable ◽  
Bank Stability ◽  
Moderation Effect ◽  
Lm Test ◽  
Data Estimation

The present investigation empirically determines the comparative as well as combine panel estimations for the relationship between climate change and bank stability in three selected ASEAN countries; Malaysia, Indonesia and Thailand with the moderation of green financing and renewable energy. Five leading banks were chosen from each country based on green financing usage. The dependent variable was bank stability, which was proxies by z-score of ROA and ROE along with SDROA and SDROE. Climate change was the main independent variable, which was proxies by CO2 emission while the control variable was organization quality. Panel data estimation was applied using a fixed effect, random effect and pooled OLS technique along with the Hausman test and LM test. Both Hausman and LM tests were not significant which conformed pooled data estimation as the appropriate modelling. The comparative findings indicate that bank stability strongly decreased by climate change in Malaysia, Indonesia and Thailand. The Green financing strongly enhances bank stability in the case of Malaysia and Thailand while renewable energy is a less important factor to enhance the bank stability for all the three countries. The moderation effect of green financing significantly enhances bank stability in the case of Malaysia and Thailand while the moderation effect of renewable energy enhances bank stability in the case of Malaysia and Indonesia only. The combined estimates conclude that climate changes strongly decreases the bank stability in the ASEAN region while the green financing and renewable energy positively influences the bank stability in this region with low significance. The moderation effect of green financing, as well as renewable energy positively, enhances the bank stability measures of ZROA and ZROE only in this region. The policy implication for this empirical investigation concludes that the policymakers in ASEAN region should promote green financing in all the banks with renewable energy in their economies as the source of alternative energy consumption to control to devastating changes in climate so that bank stability in this region is insured.

Application of Regional Bio-Refining to Increase the Sustainability and Energy Self-Sufficiency of Rural and Agricultural Communities

2010 ◽  
Author(s):  
David T. Gallaspy ◽  
Rodney E. Sears
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Energy Conversion ◽  
Wind Power ◽  
Renewable Resources ◽  
Renewable Energy Resources ◽  
Standard Equipment ◽  
Rural Region ◽  
Capital Costs ◽  
Self Sufficiency

The economics and potential offsets of imported energy are analyzed. Benefits to the carbon footprint of the region are estimated. A commercial structure for the operation of such a co-operative bio-refinery is proposed. Rural and agricultural regions typically have ample production of biomass in various forms, including wood from forestry, agricultural wastes and range grasses. Certain regions also have renewable energy resources such as wind power, solar insolation and hydraulic power. Rural regions are typically seen to have a potential for renewable energy that greatly exceeds energy consumption due to human activity in the region. However, energy consumption in such areas is highly biased toward non-renewable sources, just as in more urbanized regions. This is due to the standardization of virtually all manufactured energy conversion equipment to use available processed energy sources such as electricity and natural gas and refined fuels such as diesel and gasoline. In addition, agricultural activities are highly dependent on energy-intensive petrochemicals such as fertilizers, pesticides, and herbicides. Energy sustainability and self-sufficiency can therefore be increased by conversion of local renewable resources into appropriate form values for existing energy conversion equipment. Solar power, wind power and hydropower are fully commercial, although more economic in some regions than in others. The production of electricity from biomass fuels via conventional steam cycles is well established, if challenging from an economic standpoint. However, conversion of biomass and other renewable resources into fuels that can be used in standard equipment, and chemicals and fertilizers for local agricultural production is both technically and economically challenging. The authors evaluate the potential for a typical rural region to offset imports of conventional non-renewable energy such as electricity, engine fuels, and fertilizers via the establishment of a regional bio-refinery financed and operated as a local co-operative. The renewable resources of the typical rural region are assumed to facilitate the analysis. The appropriate technologies, scope, product slate, production rates, capital costs and operating costs for the bio-refinery are defined.

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