scholarly journals The possibility of functioning micro-scale biogas plant in selected farm

2017 ◽  
Vol 35 (1) ◽  
pp. 19-25 ◽  
Author(s):  
Wojciech Czekała ◽  
Karolina Gawrych ◽  
Anna Smurzyńska ◽  
Jakub Mazurkiewicz ◽  
Artur Pawlisiak ◽  
...  
Keyword(s):  
Renewable Energy Sources ◽  
Electrical Power ◽  
Heat Energy ◽  
Biogas Plant ◽  
Environmental Benefits ◽  
Production Potential ◽  
Energy Potential ◽  
Methane Fermentation ◽  
Cogeneration System ◽  
Biogas Plants

AbstractRenewable energy sources (RES) become more and more popular. In Poland, biomass has the highest energy potential among all RES. Methane fermentation is one of possible ways to use it. The aim of the study was to perform energy and economic calculations for the biogas plant installation project in an existing farm situated in the Wielkopolska voivodeship. Because of the small area of the farm and the type of production, the calculations were carried out for micro-installation biogas plants. During the preparation of the project the production potential of the substrates was determined, allowing for further analyses. It was calculated that the electrical power of the designed biogas plant was 8.10 kW, with a total annual production of biogas at 29 471 m3. The obtained amount allows to generate in the cogeneration system 66 450 kWh of electricity and 71 190 kWh of heat energy. Some of the energy produced can be used on the farm and its surplus sold to the grid, which will allow for financial and environmental benefits.

scholarly journals Geospatial Analysis and Environmental Impact Assessment of a Holistic and Interdisciplinary Approach to the Biogas Sector

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5374
Author(s):  
Robert Bedoić ◽  
Goran Smoljanić ◽  
Tomislav Pukšec ◽  
Lidija Čuček ◽  
Davor Ljubas ◽  
...  
Keyword(s):  
Biogas Production ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Interdisciplinary Approach ◽  
Environmental Benefits ◽  
Maize Silage ◽  
Alternative Pathways ◽  
Agriculture Industry ◽  
Biogas Plants ◽  
The Impact

Crop-based biogas energy production, in combination with electricity generation under subsidy schemes, is no longer considered a favourable business model for biogas plants. Switching to low-cost or gate fee feedstocks and utilising biogas via alternative pathways could contribute to making existing plants fit for future operations and could open up new space for further expansion of the biogas sector. The aim of this study was to combine a holistic and interdisciplinary approach for both the biogas production side and the utilisation side to evaluate the impact of integrating the biogas sector with waste management systems and energy systems operating with a high share of renewable energy sources. The geospatial availability of residue materials from agriculture, industry and municipalities was assessed using QGIS software for the case of Northern Croatia with the goal of replacing maize silage in the operation of existing biogas plants. Furthermore, the analysis included positioning new biogas plants, which would produce renewable gas. The overall approach was evaluated through life cycle assessment using SimaPro software to quantify the environmental benefits and identify the bottlenecks of the implemented actions. The results showed that the given feedstocks could replace 212 GWh of biogas from maize silage in the relevant region and create an additional 191 GWh of biomethane in new plants. The LCA revealed that the proposed measures would contribute to the decarbonisation of natural gas by creating environmental benefits that are 36 times greater compared to a business-as-usual concept. The presented approach could be of interest to stakeholders in the biogas sector anywhere in the world to encourage further integration of biogas technologies into energy and environmental transitions.

scholarly journals Assessment of Waste to Energy Potential in the Central Zone of Afghanistan

2019 ◽  
Vol 4 (12) ◽  
pp. 142-148
Author(s):  
Abdul Ghani Noori ◽  
Agha Mohammad Fazli
Keyword(s):  
Dry Matter ◽  
Field Experiments ◽  
Dairy Farm ◽  
Central Zone ◽  
Biogas Plant ◽  
Waste To Energy ◽  
Financial Indicators ◽  
Energy Potential ◽  
Biogas Plants ◽  
Biogas Energy

The central zone of Afghanistan has enough cattle to be considered for generating biogas. The cattle population in the zone was 634,524, 647,229 and 633,362 heads in 2012-13, 2014-15 and 2016-17, respectively. As a result of field experiments, the fresh manure generation of cattle in the zone is 19 kg head-1 day-1, fraction recoverable of the generated cattle manure is 80% and the proportion of dry matter of the manure is 23.7%. Based on these manure parameters, about 834,320, 851,026 and 832,792 tons of dry matter recoverable could be generated in the mentioned three years, respectively. By using a biogas digester, this dry matter recoverable could be enough for generating about 86,769,319, 88,506,691 and 86,610,419 m3 of biogas in 2012-13, 2014-15 and 2016-17, respectively. The amount of generated biogas is equivalent of 1,735, 1,770 and 1,732 TJ of energy in the mentioned years, respectively. In the case study of Kabul province, it was found that till now biogas plants are not constructed in the zone. For financial evaluation of biogas utilization, a dairy of 24 cattle was selected. It was determined that the manure from 24 cattle can generate about 9 m3 per day (3,285 m3 per year) of biogas in a 24 m3 DSAC-Model biogas digester. By comparing biogas energy value from the equivalent energy of LPG, biogas has value of 66,521.25 Afg per year (978 USD per year). By considering the requirements of cooking and lighting of a family of 8 members, the generated biogas (9 m3/day) in the mentioned dairy farm can be enough for two families. Considering the situation of the zone DSAC-Model biogas plant was considered suitable among various types of it. The techno-financial analyze result was quite attractive. For this case, the NPV was 2,664.6 USD, B/C 2.37, IRR was 33% and the discounted payback period (PP) was 4.09 years (4 years and about one month). As all these financial indicators are in the acceptable range, therefore the biogas generation with DSAC-Model biogas plant in the central zone of Afghanistan is beneficent.

scholarly journals Perancangan Pembangkit Listrik Tenaga Bayu (PLTB) 10 MW di Pulau Sumba, NTT

2020 ◽  
Vol 10 (1) ◽  
pp. 29
Author(s):  
Harry Setyo Wibowo ◽  
Aditya Muhammad Nur ◽  
Mukhlis Ali ◽  
Dimas Alfredo
Keyword(s):  
Wind Energy ◽  
Wind Farm ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Energy Sources ◽  
Wake Effect ◽  
Energy Potential ◽  
Electric Generator ◽  
Wind Energy Potential ◽  
Energy Location

Wind energy is a renewable energy sources which has big potency to develop in Eastern Indonesia especially in East Nusa Tenggara that has low electrification ratio (58.64%) and mostly depend on Diesel Powered Electric Generator as main electric power generation. One effort to meet electricity needs in NTT is through the development of Wind Powered Electric Generator. One of the islands that have the best wind energy potential in NTT is Sumba Island. Based on consideration of the potential of wind energy, location topography, and transportation access, the most appropriate location for the design of Wind Powered Electric Generator in Sumba Island is the Mondu District. Based on the electricity needs in the island of Sumba of 10 MW, the design of the Wind Powered Electric Generator which is carried out with the concept of a wind farm produces its design with 105 wind turbines with three propellers, each with a power of 100 kW. The total electrical power generated by the PLTB which was designed was 10.24 MW after taking the wake effect into consideration due to the laying of the wind turbine.Energi angin merupakan salah satu energi terbarukan yang potensial dikembangkan di Indonesia Timur terutama di provinsi Nusa Tenggara Timur (NTT) yang masih mempunyai rasio elektrifikasi rendah (58,64%) dan masih mengandalkan PLTD sebagai pembangkit listrik utama. Salah satu upaya untuk mencukupi kebutuhan listrik di NTT adalah melalui pengembangan PLTB. Salah satu pulau yang mempunyai potensi energi angin paling baik di NTT adalah Pulau Sumba. Berdasarkan pertimbangan potensi energi angin, topografi lokasi, dan akses transportasi, lokasi yang paling tepat untuk perancangan PLTB di Pulau Sumba adalah di Distrik Mondu. Berdasarkan kebutuhan listrik di Pulau Sumba sebesar 10 MW, maka perancangan PLTB yang dilakukan dengan konsep ladang angin (wind farm) menghasilkan rancangan PLTB dengan 105 buah turbin angin dengan tiga baling-baling yang masing-masing berdaya 100 kW. Total daya listrik yang dihasilkan oleh PLTB yang dirancang adalah 10,24 MW setelah memperhitungkan adanya wake effect akibat peletakan turbin angin.

scholarly journals INDEPENDENT ELECTRICITY SUPPLY TO LIVESTOCK FARMS BASED ON RENEWABLE ENERGY SOURCES

2020 ◽  
pp. 134-141
Author(s):  
Mykola Stadnik ◽  
Iryna Gunko ◽  
Dmytro Protsenko
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Power Supply ◽  
Renewable Energy Sources ◽  
Biogas Plant ◽  
Energy Sources ◽  
Solar Panels ◽  
Energy Potential ◽  
Cattle Farm ◽  
Livestock Farm

The paper analyzes the energy potential of autonomous power supply based on renewable energy sources in a livestock farm. Based on calculations of the amount of farm waste that act as raw materials for a biogas power plant, the amount of electricity that can be produced from biogas has been determined. The value of electricity generation was also determined when a biogas plant and solar panels are used together in order to fully cover the need for electricity. It has been established that the use of renewable energy sources for autonomous power supply has significant potential for growth, in particular, the generation of electricity by a biogas power plant is calculated according to the minimum indicators for a cattle farm, provides 57% of the required electricity, in addition, there is also thermal energy, which is used for heating farms. The combined operation of the biogas plant and solar panels installed on the roof of the farm allows to cover the need for electricity with a reduction factor of 2.6 solar panels generation. The use of biogas obtained from the waste of a cattle farm and together with solar panels makes it possible to cover the need for electricity with a significant reserve. For a typical farm of 100 cattle, this stock is about 80%. The use of which is possible with the use of energy storage devices and the formation of a biogas reserve. It has been established that the electrical power of a biogas plant, which works in conjunction with solar panels, should be at least the average value of the power consumption to provide autonomous power supply to consumers of the livestock farm, especially in the winter months when solar insolation is minimal.

scholarly journals Effects of the German Renewable Energy Act and Environmental, Social and Economic Factors: Biogas Plants Adoption and Agricultural Landscape Change

2020 ◽  
Author(s):  
Xueqing Yang ◽  
Yang Liu ◽  
Daniela Thrän ◽  
Alberto Bezama ◽  
Mei Wang
Keyword(s):  
Renewable Energy ◽  
Landscape Change ◽  
Agricultural Landscape ◽  
Financial Incentive ◽  
Renewable Energy Sources ◽  
Biogas Plant ◽  
Land Conflicts ◽  
Silage Maize ◽  
Biogas Plants ◽  
The Impact

Abstract Background: The German energy transition strategy calls for reform of the German energy sector. Against this background, the Germany Renewable Energy Sources Act, or EEG, was issued in 2000 and is widely regarded as a successful legislation for promoting bioenergy development, as more than 9000 biogas plants were built in Germany until 2017. However, the impact from different EEG periods on regional biogas plants’ development and the long-term influence to regional landscape change are rarely simultaneously studied. Methods: This study aimed to quantitatively analyse the impact of the EEG on promotion the biogas plant development in central Germany (CG) by using the event study econometric technique. A GIS-based spatial analysis was further conducted to provide insight into the changes of the agricultural landscape, which was resulted from the development of biogas plants during the EEG from 2000 to 2014. Results: One of the main findings was that the EEGs had time-varying effects on motivating biogas plants construction and selecting the plants size. The comparison between different EEG emendations suggested that the EEG 2009 was the most successful one in market implementation. Besides, the adoption of the biogas plant in CG was mainly driven by the farmer’s financial incentive and taken as an investment to secure the farming business. At the landscape scale, the expansion of silage maize was remarkable in CG from 2000 to 2014. The silage maize was intensively cultivated in the regions with high biogas plant installed capacity. Since EEG 2009, the regional livestock number increased rapidly, which was also associated with increasing pasture land area in CG. This phenomenon suggested a promising regional animal farming and its potential of manure as biogas feedstock. Conclusions: These findings imply that the policy makers should take the EEG 2009 emendation as reference to promote the marketing of future new renewable energy technologies and cautions should be paid on the potential land conflicts of agricultural-based bioenergy development.

scholarly journals Energy potential of Republic of Serbia as an Investment Opportunity UDK 338.48

2012 ◽  
Vol 1 (1) ◽  
pp. 19
Author(s):  
Ivana Milošev ◽  
Ljubica Mijušković ◽  
Gordana Abramović ◽  
Andrea Katić ◽  
Sandra Brkanlić
Keyword(s):  
Renewable Energy Sources ◽  
Electrical Power ◽  
National Policy ◽  
Electrical Energy ◽  
Energy Sector ◽  
Energy Potential ◽  
New Production ◽  
Wide Range ◽  
New Energy ◽  
Set Up

Serbia has a big potential to accomplish the goal of making the environment green and comfortable for living. It started with reforms in comprehensive Energy Sector and set up a new Energy Policy in accordance with the EU practice and standards. With new national policy, Serbia became aware of middle-term and long-term strategies for developing of adequate Power Sectors. There were investments into the Network and there are plans for building new and expanding existing transforming stations, building new interconnecting line and making some other investments. Having in mind the cooperation with EU, Service for Electrical Energy Market Development has already prepared wide range of available services related to market and deregulation of network, from requirements for connecting to transmission line to securing balance mechanism, and that makes possible for international Electrical Power market to exist. Since the production system is unable to respond to the demand in certain moments of time and Serbia has to import Electrical Energy, that makes Renewable Energy Sources very attractive for use in Power system. Deficit of electrical power must be covered either by import or by more intensive investments in new production capacities, making Serbian energy sector economically interesting.

scholarly journals Assessment of the Biogas Production Potential within the Slovak Spirits Industry

2021 ◽  
Vol 10 (1) ◽  
pp. 1-5
Author(s):  
Ondrej Beňuš ◽  
Peter Bielik ◽  
Natália Turčeková ◽  
Izabela Adamičková
Keyword(s):  
Slovak Republic ◽  
Biogas Production ◽  
Raw Materials ◽  
Heat Energy ◽  
Alcoholic Beverages ◽  
Distillation Process ◽  
Production Potential ◽  
Energy Potential ◽  
Positive Side ◽  
Ideal Situation

Abstract The Slovak spirits industry has a stable position within the alcoholic beverages industry in the Slovak Republic. However, its production process causes significant environmental stress on nature. The industry can use roughly only 10% of the raw materials. This means a significant amount of waste is produced during the distillation process. We investigated the biogas production potential within the Slovak distilleries producing spirits for final consumption when we compared the production of spirits between the years 2010 and 2019. Biogas production potential is calculated as an ideal situation when all spent wash from spirits producing distilleries is used for biogas production. The potential energy gain is also calculated in kWh based on the already available research in the field of biogas production. We conducted that the total biogas potential of the Slovak spirits industry could reach 15,886,053 kWh in terms of electricity and 22,946,177 kWh in terms of heat energy if we calculate energy potential according to the spirits production in the year 2019. The total combined energy potential generated during the reuse of waste from distilleries could reach 38,832,230 kWh. The biogas production in these facilities has also a positive side effect. If distilleries use the heat energy for the distillation process, the amount of greenhouse emissions will also be declining.

CURRENT STATE AND PROSPECTS FOR THE DEVELOPMENT OF BIOGAS ENERGY IN UZBEKISTAN

2020 ◽  
Vol 2 (7) ◽  
pp. 171-184
Author(s):  
Z. U. SAIPOV ◽  
◽  
G. A. ARIFDZHANOV ◽  
Keyword(s):  
Renewable Energy ◽  
Organic Waste ◽  
Agricultural Sector ◽  
Renewable Energy Sources ◽  
Energy Resources ◽  
Agricultural Producers ◽  
Biogas Plants ◽  
The Republic ◽  
Rural Producers ◽  
Agricultural Regions

Energy is one of the main pillars of the state’s economy, which is currently facing serious problems due to depletion of mineral energy resources and the threatening environment. As a result, presently around the world there is a rapid growth and development of energy-efficient technologies and the use of renewable energy sources (RES), providing an increase in energy resources, as well as environmental and social effects. One of the most relevant and promising areas of renewable energy development is the disposal and processing of organic waste in biogas plants, and this is particularly relevant in agricultural regions. In this regard, this paper considers the state and prospects for the development of bioenergy in agricultural regions of Uzbekistan, where half of the population of the republic lives. The potential of organic waste from livestock and poultry farming of the agricultural sector was determined, and it was revealed that the use of biogas plants for the disposal of manure and litter is clearly a profitable production and requires close attention from rural producers. The introduction of biogas technologies for the bulk of agricultural producers is an urgent task, that will ensure not only a solution to the waste problem, but it will also provide a solution to energy, agricultural, environmental and social problems in rural regions of the republic.

scholarly journals Voltage Stability of Power Systems with Renewable-Energy Inverter-Based Generators: A Review

Electronics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 115
Author(s):  
Nasser Hosseinzadeh ◽  
Asma Aziz ◽  
Apel Mahmud ◽  
Ameen Gargoom ◽  
Mahbub Rabbani
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Voltage Stability ◽  
Reactive Power ◽  
Power Grid ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
System Stability ◽  
Special Issue ◽  
Synchronous Generators

The main purpose of developing microgrids (MGs) is to facilitate the integration of renewable energy sources (RESs) into the power grid. RESs are normally connected to the grid via power electronic inverters. As various types of RESs are increasingly being connected to the electrical power grid, power systems of the near future will have more inverter-based generators (IBGs) instead of synchronous machines. Since IBGs have significant differences in their characteristics compared to synchronous generators (SGs), particularly concerning their inertia and capability to provide reactive power, their impacts on the system dynamics are different compared to SGs. In particular, system stability analysis will require new approaches. As such, research is currently being conducted on the stability of power systems with the inclusion of IBGs. This review article is intended to be a preface to the Special Issue on Voltage Stability of Microgrids in Power Systems. It presents a comprehensive review of the literature on voltage stability of power systems with a relatively high percentage of IBGs in the generation mix of the system. As the research is developing rapidly in this field, it is understood that by the time that this article is published, and further in the future, there will be many more new developments in this area. Certainly, other articles in this special issue will highlight some other important aspects of the voltage stability of microgrids.

scholarly journals Gravitricity based on solar and gravity energy storage for residential applications

2021 ◽  
Author(s):  
Oluwole K. Bowoto ◽  
Omonigho P. Emenuvwe ◽  
Meysam N. Azadani
Keyword(s):  
Energy Storage ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Computational Modelling ◽  
Dynamic Modelling ◽  
Design Parameters ◽  
Energy Potential ◽  
Height Range ◽  
Efficient System ◽  
Priority List

AbstractThis study proposes a design model for conserving and utilizing energy affordably and intermittently considering the wind rush experienced in the patronage of renewable energy sources for cheaper generation of electricity and the solar energy potential especially in continents of Africa and Asia. Essentially, the global quest for sustainable development across every sector is on the rise; hence, the need for a sustainable method of extracting energy cheaply with less wastage and pollution is on the priority list. This research, integrates and formulates different ideologies, factors and variables that have been adopted in previous research studies to create an efficient system. Some of the aforementioned researches includes pumped hydro gravity storage system, Compressed air gravity storage system, suspended weight in abandoned mine shaft, dynamic modelling of gravity energy storage coupled with a PV energy plant and deep ocean gravity energy storage. As an alternative and a modification to these systems, this research is proposing a Combined solar and gravity energy storage system. The design synthesis and computational modelling of the proposed system model were investigated using a constant height and but varying mass. Efficiencies reaching up to 62% was achieved using the chosen design experimental parameters adopted in this work. However, this efficiency can be tremendously improved upon if the design parameters are modified putting certain key factors which are highlighted in the limitation aspect of this research into consideration. Also, it was observed that for a test load of 50 × 103 mA running for 10 h (3600 s), the proposed system will only need to provide a torque of 3.27Nm and a height range of 66.1 × 104 m when a mass of 10 kg is lifted to give out power of 48 kwh. Since gravity storage requires intermittent actions and structured motions, mathematical models were used to analyse the system performance characteristics amongst other important parameters using tools like MATLAB Simscape modelling toolbox, Microsoft excel and Sysml Model software.

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