scholarly journals Silvopastoral Systems for Energy Generation

2021 ◽  
Author(s):  
Cid Marcos Gonçalves Andrade ◽  
Sérgio Inácio Gomes ◽  
Mauro Antônio da Silva Sá Ravagnani ◽  
Eugênia Leandro Almeida
Keyword(s):  
Forest Biomass ◽  
Electrical Energy ◽  
Energy Generation ◽  
Energy Utilization ◽  
Silvopastoral Systems ◽  
Energy Potential ◽  
Cogeneration System ◽  
Management Techniques ◽  
System Characteristics ◽  
Biomass For Energy

The silvipastoral systems are characterized by the association between tree crops, pastures and animals and can also constitute an efficient and sustainable means of supplying forest biomass for energy purposes such as electric, mechanical and thermal energy generation. It is an unconventional energy alternative and the evaluation of the energy potential offered by this productive system depends on several factors, such as management techniques, forest species, silvipastoral system characteristics and the design of the conversion and energy utilization process. In this context, it was developed a mathematical model to determine the energy efficiency of silvipastoril production system integrated with a cogeneration system for the production of thermal, mechanical and electrical energy. It can be concluded that these results are advantageous in relation to the conventional modalities of energy generation, taking into account the prices of electricity practiced in the market.

scholarly journals Biomass energy potential of coconut varieties in Guyana

2019 ◽  
Vol 5 (2) ◽  
pp. 97 ◽  
Author(s):  
Bibi Abrahim ◽  
Oudho Homenauth
Keyword(s):  
Renewable Energy ◽  
Energy Content ◽  
Energy Generation ◽  
Biomass Energy ◽  
Energy Output ◽  
Waste Materials ◽  
Energy Potential ◽  
Energy Value ◽  
Coconut Shells ◽  
Biomass For Energy

Guyana’s growing coconut industry has great potential for the generation of renewable energy using its waste materials currently discarded unsustainably. This study sought to investigate the energy potential of husks and shells of three common coconut varieties grown in Guyana. In this experiment, samples of coconut husks and shells were subjected to proximate, ultimate and calorific analyses. These analyses indicated that the energy value of the husks and shells of tall and dwarf coconuts were high, confirming the findings presented in previous studies. It was found that coconut shells have a higher energy content as opposed to the husk, mainly due to the presence of lignin and cellulose and a lower moisture content. The shell of one of the dwarf varieties (firmer and thinner) produced the greatest energy output. The coconut husks, however, followed closely where the tall variety reported the greatest energy value. Based on the energy output of the waste materials, possible energy, power, carbon, diesel and price savings were determined, if energy conversion is to be implemented. The analyses show substantial benefits for the country with respect to waste management, carbon emissions and costs, indicating the need for energy generation from coconut waste. A proposed gasification-pyrolysis system was developed and provided a baseline for the use of coconut biomass for energy generation in Guyana.

scholarly journals Evaluation of Wind Power for Electrical Energy Generation in the Mediterranean Coast of Palestine for 14 Years

2019 ◽  
Vol 9 (4) ◽  
pp. 2212
Author(s):  
Ahmed S A Badawi ◽  
Nurul Fadzlin Hasbullaha ◽  
Siti Yusoff ◽  
Sheroz Khan ◽  
Aisha Hashim ◽  
...  
Keyword(s):  
Wind Speed ◽  
Wind Energy ◽  
Coastal Plain ◽  
Gaza Strip ◽  
Electrical Energy ◽  
Energy Generation ◽  
Energy Potential ◽  
Wind Energy Potential ◽  
The Gaza Strip ◽  
Electrical Energy Generation

The generation, distributionand transmission of electricity in Palestine have recently emerged as major issues. This study comprehensively assesses the production of wind energy and the estimation of wind energy potential in Palestine’s south coastal plain. The goal is to evaluate Palestine’s wind energy production by studying wind data and calculating energy and power. This study analyses two actual time series datasets. Findings are elaborated to determine the wind energy conversion per 1 m2. The wind speed data from January 1996 to December 2006 in Gaza and from January 2012 to December 2015 in Ashqelon are selected as the data sample. This study is crucial given the need for clean and renewable energy, the power shortage in the Gaza Strip and the limited number of wind energy studies conducted in the south coastal plain of Palestine, especially Gaza Strip. This study estimates the wind energy potential of the Gaza Strip to determine the wind potential. The annual mean wind speed and power are 4.11 ms-1 and 903.4 Wm-2, respectively. Moreover, the study clarifies the electrical energy generation in the Gaza Strip using small-scale turbines and offers a feasible alternative to existing schemes.

Evolution of the quality of forest biomass for energy generation in a cogeneration plant

2019 ◽  
Vol 135 ◽  
pp. 1291-1302 ◽  
Author(s):  
Tamires Liza Deboni ◽  
Flávio José Simioni ◽  
Martha Andreia Brand ◽  
Gisele Paim Lopes
Keyword(s):  
Forest Biomass ◽  
Energy Generation ◽  
Cogeneration Plant ◽  
Biomass For Energy

scholarly journals Agricultural Residue Management for Sustainable Power Generation: The Poland Case Study

2021 ◽  
Vol 11 (13) ◽  
pp. 5907
Author(s):  
Valerii Havrysh ◽  
Antonina Kalinichenko ◽  
Anna Brzozowska ◽  
Jan Stebila
Keyword(s):  
Power Generation ◽  
Spatial Distribution ◽  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Agricultural Waste ◽  
Energy Utilization ◽  
Evaluation Methodology ◽  
Energy Sources ◽  
Energy Potential ◽  
Agricultural Residue

The European Union has set targets for renewable energy utilization. Poland is a member of the EU, and its authorities support an increase in renewable energy use. The background of this study is based on the role of renewable energy sources in improving energy security and mitigation of climate change. Agricultural waste is of a significant role in bioenergy. However, there is a lack of integrated methodology for the measurement of its potential. The possibility of developing an integrated evaluation methodology for renewable energy potential and its spatial distribution was assumed as the hypothesis. The novelty of this study is the integration of two renewable energy sources: crop residues and animal husbandry waste (for biogas). To determine agricultural waste energy potential, we took into account straw requirements for stock-raising and soil conservation. The total energy potential of agricultural waste was estimated at 279.94 PJ. It can cover up to 15% of national power generation. The spatial distribution of the agricultural residue energy potential was examined. This information can be used to predict appropriate locations for biomass-based power generation facilities. The potential reduction in carbon dioxide emissions ranges from 25.7 to 33.5 Mt per year.

Electrical Energy Generation via Reversible Chemical Doping on Carbon Nanotube Fibers

2016 ◽  
Vol 28 (44) ◽  
pp. 9752-9757 ◽  
Author(s):  
Albert Tianxiang Liu ◽  
Yuichiro Kunai ◽  
Pingwei Liu ◽  
Amir Kaplan ◽  
Anton L. Cottrill ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrical Energy ◽  
Energy Generation ◽  
Chemical Doping ◽  
Carbon Nanotube Fibers ◽  
Electrical Energy Generation

Research on Steric and Multilevel Concentrator for Photovoltaic Generation

2012 ◽  
Vol 608-609 ◽  
pp. 65-69
Author(s):  
Xiao Fan Yang ◽  
Zhi Long Xu ◽  
Chao Li ◽  
Zhong Ming Huang
Keyword(s):  
Power Generation ◽  
Solar Energy ◽  
Electrical Energy ◽  
Development Trend ◽  
Energy Utilization ◽  
Price Ratio ◽  
Photovoltaic Generation ◽  
Photovoltaic Power ◽  
Operating Factor ◽  
And Performance

As the development trend of solar energy, which is a green way of energy utilization, photovoltaic power generation has been a research hotspot of solar energy utilization technologies. Using the concentrating and tracking technology to increase the illumination intensity, and obtain more electrical energy, that will reduce the cost of the photovoltaic power generation system sharply. A kind of steric and multilevel concentrator for photovoltaic generation is introduced in this paper, whose concentration ratio is 3. The operating factor of plane mirrors and performance price ratio of the system is increased for optimizing the condensation parameters and structure of the concentrator.

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