scholarly journals Environmental and economic potential of rice husk use in An Giang province, Vietnam

2017 ◽  
Vol 8 (3) ◽  
pp. 206-211
Author(s):  
Thi Mai Thao Pham
Keyword(s):  
Power Generation ◽  
Rice Husk ◽  
Life Cycle Analysis ◽  
Large Scale ◽  
Fossil Fuels ◽  
Small Scale ◽  
Emission Mitigation ◽  
Mitigation Potential ◽  
Direct Combustion ◽  
The Cost

To evaluate CO2 emission mitigation potential and cost effectiveness of rice husk utilization, Life Cycle Analysis was conducted for 9 scenarios. The results showed that, gasification is the most efficient CO2 mitigation. From cost analysis, the cost mitigation can be achieved by replacing the current fossil fuels in cooking scenarios. Among the power generation scenarios, it was found that 30MW combustion and 5MW gasification power generations were the most economically-efficient scenarios. The briquette combustion power generation appeared less cost-competitive than direct combustion, whilst the large-scale gasification scenarios and the pyrolysis scenarios give the increase in cost from the baseline. From the viewpoints of both CO2 and cost, it was indicated that the win-win scenarios can be the rice husk use for cooking, for large-scale combustion power generation, and for small-scale gasification. Để đánh giá tiềm năng giảm thiểu phát thải CO2 và hiệu quả chi phí của việc sử dụng trấu, phương pháp đánh giá vòng đời sản phẩm đã được thực hiện cho 9 kịch bản. Kết quả cho thấy, khí hóa trấu để sản xuất điện có tiềm năng giảm phát sinh khí CO2 nhiều nhất. Kết quả phân tích chi phí cho thấy việc giảm thiểu chi phí có thể đạt được khi thay thế sử dụng nhiên liệu hóa thạch trong kịch bản dùng trấu cho nấu ăn. Giữa các kịch bản về sản xuất điện, hiệu quả kinh tế cao nhất trong trường hợp đốt trực tiếp trấu để sản xuất điện ở quy mô công xuất lớn (30MW) và khí hóa ở quy mô trung bình (5MW). Trường hợp dùng củi trấu không mang lại hiệu quả kinh tế so với dùng trực tiếp trấu để phát điện. Hai trường hợp dùng trấu để sản xuất dầu sinh học và khí hóa gas công suất lớn (30MW) cho thấy chi phí tăng cao so với điều kiện biên. Kịch bản cho kết quả khả thi về hiệu quả kinh tế và giảm phát thải CO2 là dùng trấu để nấu ăn, đốt trực tiếp để phát điện công suất lớn và khí hóa công suất trung bình.

Fuel Cell Microgrid with Wind Power Generation

2014 ◽  
pp. 136-166
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Wind Power ◽  
Dynamic Characteristics ◽  
Operating Conditions ◽  
Wind Power Generation ◽  
Small Scale ◽  
Power Characteristics ◽  
Renewable Power ◽  
The Cost

This chapter consists of two sections, ‘Analysis of a Fuel Cell Microgrid with a Small-Scale Wind Turbine Generator’ and ‘Power Characteristics of a Fuel Cell Microgrid with Wind Power Generation.’ An independent microgrid is expected to be effective in cutting greenhouse gas discharge and energy costs. Therefore, the operating conditions of an independent microgrid that supplies power with renewable power sources and fuel cells are investigated in the 1st section. In the 2nd section, the dynamic characteristics of fuel cell microgrid are investigated in numerical analysis, and the cost of fuel consumption and efficiency is also calculated. In addition, the stabilization time of the microgrid and its dynamic characteristics accompanied by wind-power-generation and fluctuation of the power load are clarified.

scholarly journals Effect of the scale of production on the cost-effectiveness of milk production systems belonging to the “Balde Cheio” program

2018 ◽  
Vol 39 (3) ◽  
pp. 1211
Author(s):  
Flávio De Moraes ◽  
Marcos Aurélio Lopes ◽  
Francisval De Melo Carvalho ◽  
Afonso Aurélio de Carvalho Peres ◽  
Fábio Raphael Pascoti Bruhn ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Labor Force ◽  
Milk Production ◽  
Large Scale ◽  
Unit Cost ◽  
Small Scale ◽  
Total Cost ◽  
Medium Scale ◽  
Return On Capital ◽  
The Cost

This study investigates the cost-effectiveness of 20 demonstration units (DUs) belonging to the "Balde Cheio" program. The units in question are from the state of Rio de Janeiro, Brazil, dating from January to December 2011, and are sorted according to the scale of production (small, medium and large). The data were analyzed using Predictive Analytical software (PASW) 18.0. The scale of production influenced the total cost of milk production, and therefore profitability and cost-effectiveness. The large-scale stratum showed the lowest total unit cost. The positive results in medium and large scales in milk production lead to optimal conditions for long-term production, with the capitalization of cowmen. The items regarding the effective operating cost (EOC) with the biggest influence on the costs of dairy activity in the small scale stratum were food, energy and miscellaneous expenses. In the medium scale, these were food, labor force, and miscellaneous expenses. Finally, in the large scale, they were food, labor force and energy. In the small and large scale, the items regarding the total cost with the biggest influence on the costs of dairy activity were food, labor force, and return on capital, while in the medium scale, they were food, return on capital, and labor force. The average break-even point of 14 of the DUs was higher than the average daily production.

Solar Upgrading of Fuels for Generation of Electricity

2001 ◽  
Vol 123 (2) ◽  
pp. 160-163 ◽  
Author(s):  
Rainer Tamme ◽  
Reiner Buck ◽  
Michael Epstein ◽  
Uriyel Fisher ◽  
Chemi Sugarmen
Keyword(s):  
Gas Turbines ◽  
Large Scale ◽  
Fossil Fuels ◽  
High Efficiency ◽  
Combined Cycle ◽  
Test Facility ◽  
Small Scale ◽  
Start Up ◽  
Efficiency Conversion ◽  
Solar Field

This paper presents a novel process comprising solar upgrading of hydrocarbons by steam reforming in solar specific receiver-reactors and utilizing the upgraded, hydrogen-rich fuel in high efficiency conversion systems, such as gas turbines or fuel cells. In comparison to conventionally heated processes about 30% of fuel can be saved with respect to the same specific output. Such processes can be used in small scale as a stand-alone system for off-grid markets as well as in large scale to be operated in connection with conventional combined-cycle plants. The complete reforming process will be demonstrated in the SOLASYS project, supported by the European Commission in the JOULE/THERMIE framework. The project has been started in June 1998. The SOLASYS plant is designed for 300 kWel output, it consists of the solar field, the solar reformer and a gas turbine, adjusted to operate with the reformed gas. The SOLASYS plant will be operated at the experimental solar test facility of the Weizmann Institute of Science in Israel. Start-up of the pilot plant is scheduled in April 2001. The midterm goal is to replace fossil fuels by renewable or non-conventional feedstock in order to increase the share of renewable energy and to establish processes with only minor or no CO2 emission. Examples might be upgrading of bio-gas from municipal solid waste as well as upgrading of weak gas resources.

scholarly journals Improving drainage conditions of forest roads using the GIS and forest road simulator

2020 ◽  
Vol 66 (No. 9) ◽  
pp. 361-367
Author(s):  
Mehran Nasiri
Keyword(s):  
Large Scale ◽  
Geometric Design ◽  
New Method ◽  
Small Scale ◽  
Forest Roads ◽  
Forest Road ◽  
Hydrological Conditions ◽  
Large Scale Study ◽  
The Cost

In this study a new method of locating culverts is presented with the composition of achieved discharge from hydrological analysis and simulated forest roads in RoadEng 3D simulator to improve drainage condition. Locating culverts was performed on a small scale (1:20 000, using GIS) and large scale (1:2 000, road geometric design simulator). The small-scale study regarding the achieved discharge from streams shows that the installation of some culverts is not necessary. The large-scale study also showed that the geometric design of forest road has a significant effect on locating culverts and its accuracy. To improve drainage conditions 6 culverts and 2 waterfronts taking into account the geometric design of forest road, hydrological conditions and appropriate intervals (155 m) have been proposed. No installation or lack of accuracy to find the best location of culverts may result in the occurrence of creep and landslide, so the cost of destruction would be several times higher than the cost of technical buildings construction.

Key drivers influencing the commercialization of ethanol-based biorefineries

1969 ◽  
Vol 16 (3) ◽  
Author(s):  
Anuj K Chandel ◽  
Om V Singh ◽  
Gajula Chandrasekhar ◽  
Linga Venkateswar Rao ◽  
Mangamoori Lakshmi Narasu
Keyword(s):  
Ethanol Production ◽  
Large Scale ◽  
Fossil Fuels ◽  
Process Integration ◽  
Raw Materials ◽  
Cellulase Production ◽  
Bioethanol Production ◽  
Recent Developments ◽  
Key Drivers ◽  
The Cost

The imposition of ethanol derived from biomass for blending in gasoline would make countries less dependent on current petroleum sources, which would save foreign exchange reserves, improve rural economies and provide job opportunities in a clean and safe environment. The key drivers for successful commercial ethanol production are cheap raw materials, economic pretreatment technologies, in-house cellulase production with high and efficient titers, high ethanol fermentation rates, downstream recovery of ethanol and maximum by-products utilization. Furthermore, recent developments in engineering of biomass for increased biomass, down-regulation of lignin synthesis, improved cellulase titers and re-engineering of cellulases, and process integration of the steps involved have increased the possibility of cheap bioethanol production that competes with the price of petroleum. Recently, many companies have come forward globally for bioethanol production on a large scale. It is very clear now that bioethanol will be available at the price of fossil fuels by 2010. This article intends to provide insight and perspectives on the important recent developments in bioethanol research, the commercialization status of bioethanol production, the step-wise cost incurred in the process involved, and the possible innovations that can be utilized to reduce the cost of ethanol production.

scholarly journals Application of automatic control furnace for combustion of biomass briquette fuel for tobacco curing

2020 ◽  
pp. 148-148
Author(s):  
Zhaopeng Song ◽  
Fengjie Wei ◽  
Xinfeng Su ◽  
Yongjun Wang ◽  
Yikuan Fan ◽  
...  
Keyword(s):  
Computer Technology ◽  
Biomass Energy ◽  
Small Scale ◽  
New Device ◽  
Direct Combustion ◽  
Curing Characteristics ◽  
Tobacco Production ◽  
Heat Demand ◽  
The Cost ◽  
First Time

Applying biomass energy for curing flue-cured/Virginia tobacco heating is the best way to realize green tobacco production. Aiming to satisfy the heating demand for flue-cured tobacco curing, a new heating device that uses biomass briquettes as fuel for curing tobacco is adopted the first time, which was developed using modern mature electromechanical and computer technology. The new device consists of automatic feeding, ash cleaning, ventilation, and ignition systems governed by an intelligent tobacco-curing controller designed for specific curing characteristics. The results of experiments conducted with an original direct combustion coal furnace, bulk curing barn, and controlled coal-fired heating indicated that the heat supply of the new device could satisfy the heat demand during the tobacco curing process, with a good performance-controlling difference of ? 0.5?C between the actual and target dry-bulb temperature in the barn. With its unattended heating management and use of fully burning fuel, the new device sharply decreased the cost of manual operation and tobacco leaves required per kilogram compared to a coal furnace. Considering the shape of its structure, the new device could be used to heat homes or small-scale boilers if the chip procedure of the controller is altered.

scholarly journals Analisis Manajemen Keuangan pada Usaha Peternakan Kemitraan Ayam Broiler Skala Rakyat

2020 ◽  
Vol 5 (1) ◽  
pp. 37
Author(s):  
Taufan Daniarta Sukarno
Keyword(s):  
Large Scale ◽  
Survey Methods ◽  
Cash Flows ◽  
Small Scale ◽  
Central Java ◽  
Operating Cash Flows ◽  
Net Revenue ◽  
Operating Cash Flow ◽  
Plasma Core ◽  
The Cost

Poultry sectors contributed 2,51% of GDRP in the Central Java Province, where Semarangcontributed 1.135.487 kg of Broilers chicken in 2016. Plasma-core partnership is one of the most used business cooperation types amongst the poultry farmers. Classification in poultry business scale divides into 3 classes, which were: Small Scale (≤5.000 heads), Medium Scale (5.001-10.000 heads) and Large Scale (>10.000 head). The purpose of this study is to estimate the operating cashflows and revenue. The benefit of this study is to detect the profits and anticipate losses in poultry farming. This study used Survey methods, location arrangement used purposive sampling and data collected by interviews with the owners. Data analysis used revenue and operating cash flow computation. The results of this study show the net revenue of this poultry farm is IDR.171.488.834, while the operating cash flows are IDR.170.286.117,65. The cost of chicken seedlings purchase and its feed is the most expensive amongst all subjects. Clustering results shows that this poultry was categorized as Small scale poultry, where it’s population is only 4.000 chickens, but are profitable and worthy to expand, and makes it one of the most longest-living poultry farms in the region

scholarly journals An experimental investigation into a novel small-scale device for energy harvesting using vortex-induced vibration

2020 ◽  
Author(s):  
Farshad Moradi Gharghani ◽  
Mohamad Ali Bijarchi ◽  
Omid Mohammadi ◽  
Mohammad Behshad Shafii
Keyword(s):  
Wind Energy ◽  
Large Scale ◽  
Fossil Fuels ◽  
Energy Harvester ◽  
Electrical Energy ◽  
Small Scale ◽  
Comprehensive Investigation ◽  
Vortex Induced Vibration ◽  
Geometrical Shapes ◽  
Oscillating Plate

Abstract Renewable energies could be a good solution to the problems associated with fossil fuels. The storage of wind energy by means of small-scale devices rather than large-scale turbines is a topic that has gained lots of interest. In this study, a compact device is proposed to harvest wind energy and transform it into electrical energy, by means of oscillations of a magnet into a coil, using the concept of vortex-induced vibration (VIV) behind a barrier. For a more comprehensive investigation, this system is studied from two viewpoints of fluid mechanics (without magnet) and power generation (with the magnet). For this purpose, an oscillating plate hinging on one side and three barriers with different geometrical shapes including cylindrical, triangular and rectangular barriers are used. In addition to the effect of barrier geometry, the impacts of various barriers dimensions, the distance between the plate and the barriers as well as inclination angle of the plate with respect to the horizon on the amplitude of oscillations and generated power are investigated. Results showed that in each case, there is a unique Reynolds number in which the frequency of vortex shedding equals to the frequency of plate oscillation and the output power from the energy harvester device is maximum. Besides, by increasing the barrier dimensions, the amplitude of oscillations increases up to three times, which leads to a higher generated power. Finally, by considering the studied parameters, the best conditions for generating energy using the VIV method are presented for design purposes. Among all the considered cases, the cylindrical barrier with the highest diameter and nearest distance to the plate led to the highest efficiency (0.21%) in comparison with other barriers.

scholarly journals Design and Production of Portable Bar Bender

2018 ◽  
Vol 7 (3.34) ◽  
pp. 46
Author(s):  
Mariyappan K ◽  
Karthick N ◽  
Aasik Ahamed.N ◽  
Gopinath S ◽  
Pradeep. S ◽  
...  
Keyword(s):  
Large Scale ◽  
Scale Construction ◽  
Cost Price ◽  
Small Scale ◽  
The Cost ◽  
Design And Production

During this generation many projects and inventions are invented to reduce the man power, time, and difficulties of the work. But still some small types of works are only based on the man power because of the cost price of invention and difficult of handling of inventions. This designed and fabricated hydraulic bar bending equipment is used for bending rods, strips, angles, and bars. During some period a type of hydraulic rod bending machines only used on large scale and industrial works. In our type we simplified the design suitably for small scale construction based rod bending works.  

scholarly journals Profitable Decarbonization through E-Mobility

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4042
Author(s):  
Gürkan Kumbaroğlu ◽  
Cansu Canaz ◽  
Jonathan Deason ◽  
Ekundayo Shittu
Keyword(s):  
Power Generation ◽  
Co2 Emissions ◽  
Emission Reduction ◽  
Large Scale ◽  
Cost Effective ◽  
Electricity Sector ◽  
Complex Relationships ◽  
The Cost ◽  
Relationship Of ◽  
The Impact

This paper focuses on the interdependent relationship of power generation, transportation and CO2 emissions to evaluate the impact of electric vehicle deployment on power generation and CO2 emissions. The value of this evaluation is in the employment of a large-scale, bottom-up, national energy modeling system that encompasses the complex relationships of producing, transforming, transmitting and supplying energy to meet the useful demand characteristics with great technological detail. One of such models employed in this analysis is the BUEMS model. The BUEMS model provides evidence of win-win policy options that lead to profitable decarbonization using Turkey’s data in BUEMS. Specifically, the result shows that a ban on diesel fueled vehicles reduces lifetime emissions as well as lifetime costs. Furthermore, model results highlight the cost-effective emission reduction potential of e-buses in urban transportation. More insights from the results indicate that the marginal cost of emission reduction through e-bus transportation is much lower than that through other policy measures such as carbon taxation in transport. This paper highlights the crucial role the electricity sector plays in the sustainability of e-mobility and the value of related policy prescriptions.

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