scholarly journals HANDLING OF COAL DUST AT COAL HANDLING FACILITY IN COAL POWER PLANT USING SOFT SYSTEM METHODOLOGY (SSM) APPROACH

SINERGI ◽  
2019 ◽  
Vol 23 (3) ◽  
pp. 223
Author(s):  
Akhyar Zuniawan ◽  
Iphov Kumala Sriwana
Keyword(s):  
Power Plant ◽  
Raw Materials ◽  
Coal Dust ◽  
Electrical Energy ◽  
Conveyor Belt ◽  
Working Environment ◽  
Soft System Methodology ◽  
Coal Power ◽  
The Impact ◽  
System Methodology

Currently, many coal-fired powers plants are built to supply electrical energy needs in Indonesia due to relatively inexpensive raw materials and abundant in Indonesia. Handling of coal is mostly done at the power plant using coal handling facilities consisting of ship unloaders, conveyor belts, stock piles, silos or bunkers. The problem that arises in the coal handling facility is dust from coal that fells or hovers in the air so that it can interfere with the environment and health both for workers in the Coal Power and residents around the Coal Power. The purpose of writing this paper is to eliminate the spread of coal dust that arises due to coal handling equipment that is not precise and imperfect. The method used is the Soft System Methodology (SSM), which is a systematic approach used to analyze and solve problems in complex and messy situations. This paper examines the benefits of applying SSM to knowledge management issues in handling coal dust at a power plant. Improvement is done by upgrading coal handling equipment (ship unloader, conveyor belt, stock pile) with the addition of dust suppression, proper sealing system, dust bag, and training to operators on the impact and handling of coal dust and coal handling equipment maintenance, so resulting in a significant decrease in the spread of coal dust, creating a working environment and the environment becomes clean, healthy and safe.

scholarly journals PEMODELAN GENERATOR YANG EFEKTIF YANG DIPASANGKAN DENGAN IMPACT WRENCH SEBAGAIUSAHA UNTUK MENINGKATKAN DAYA PADA PEMBANGKIT LISTRIK TENAGA SAMPAH

2021 ◽  
Vol 7 (1) ◽  
pp. 13-19
Author(s):  
Hubertus Ngaderman ◽  
Ego Srivajawaty Sinaga
Keyword(s):  
Power Plant ◽  
Numerical Model ◽  
Permanent Magnet ◽  
Water Mass ◽  
Electrical Energy ◽  
Rotor Speed ◽  
Synchronous Generators ◽  
Waste Energy ◽  
Permanent Magnet Generators ◽  
The Impact

The amount of waste can be overcome, some efforts are needed to reduce it. This research will focus on the numerical model of a solid waste power plant. Researchers replace turbine with an impact which have a specification certain pressure, the impact rotates the generator The purpose of this research is to get the rms voltage of a generator, where the generator is a generator capable of supplying a  rms voltage. This effort is made to convert waste energy into electrical energy. Generators which are the main topic in this research are synchronous generators and permanent magnet generators. Water with a mass of  requires a temperature of to provide the required stress, while water with a mass of , its temperature is  Water with a mass of  requires a temperature of  to provide the required voltage, while water with a mass of  has a temperature of . For a water mass of , a temperature of , the synchronous rotor speed is , the rms voltage is . To reach the rms voltage of , the rotor on the generator must rotate at a synchronous speed of .        

scholarly journals Erőművek életciklus-elemzése a fajlagos anyagfelhasználás tükrében

2021 ◽  
Vol 2 (2) ◽  
pp. 146-154
Author(s):  
Zoltán Korényi
Keyword(s):  
Life Cycle ◽  
Power Plant ◽  
Environmental Impact ◽  
Life Cycle Analysis ◽  
Power Plants ◽  
Raw Materials ◽  
Peak Load ◽  
Electric Energy ◽  
Limited Area ◽  
The Impact

Összefoglaló. A dolgozat témája a különböző erőműfajták életciklusra vonatkozó fajlagos anyagigényének a vizsgálata. Az elemzések a nemzetközi szakirodalmi források felhasználásával történtek. Módszere, a bázisadatok elemzése, majd az anyagigényeknek az erőmű beépített teljesítményére és az életciklus alatt megtermelt villamosenergiára vonatkoztatott fajlagos értékek meghatározása. Az eredmények azt mutatják, hogy a nap- és szélerőművek elterjedésével a hagyományos erőművek által felhasznált fosszilis energiaforrások (pl. a szén) bent maradnak ugyan a földben, de cserébe az új technológia legyártásához a hagyományos anyagokból (beton, acél, alumínium, réz stb.) fajlagosan jóval nagyobb mennyiségekre lesz szükség. Emellett megnő a ritkán előforduló fémek (gallium, indium stb.) felhasználása, ami Európában, a lelőhelyek hiányában, új kockázatokkal jár. Summary. The topic of the study is to determine the material use of different power plant types. This is a part of the known life cycle analysis (LCA). The aim of LCA is to determine the impact of human activity on nature. The procedure is described in the standards (ISO 14040/41/42/42). Under environmental impact we mean changes in our natural environment, air, water, soil pollution, noise and impacts on human health. In the LCA, the environmental impact begins with the opening of the mine, continues with the extraction and processing of raw materials, and then with the production of equipment, construction and installation of the power plant. This is followed by the commissioning and then operation of the power plants for 20-60 years, including maintenance. The cycle ends with demolition, which is followed by recycling of materials. The remaining waste is disposed of. This is the complex content of life cycle analysis. Its purpose is to determine the ecological footprint of man. The method of the present study is to isolate a limited area from the complex LCA process. This means determining the amount of material needed to build different power plants, excluding mining and processing of raw materials. Commercially available basic materials are built into the power plant’s components. The research is based on the literature available in the international area. The author studied these sources, analysed the data, and checked the authenticity. It was not easy because the sources from different times, for different power plants showed a lot of uncertainty. In overcoming the uncertainties, it was a help that the author has decades of experience in the realisation of power plants. It was considered the material consumption related to the installed electricity capacity of the power plant (tons/MW) as basic data. The author then determined the specific material consumptions, allocated to the electric energy generated during the lifetime, in different power plants. The calculation is carried out with the help of the usual annual peak load duration hours and the usual lifetime of the power plants. The results show that with the spread of solar and wind energy, the fossil energy sources previously needed for conventional power plants will remain inside the Earth, but in exchange for the production of new technological equipment from traditional structural materials (concrete, steel, aluminium, copper and plastic), the special need multiplies. If we compare the power plants using renewable energy with the electric energy produced during the life cycle of a nuclear power plant, the specific installed material requirement of a river hydropower plant is 37 times, that of an onshore wind farm it is 9.6 times, and that of an outdoor solar power park is 6.6 times higher. Another important difference is that wind turbines, solar panels and batteries also require rare materials that do not occur in Europe (e.g. gallium, indium, yttrium, neodymium, cobalt, etc.). This can lead to security risks in Europe in the long run.

scholarly journals Impact of Weather on Crops in Few Northern Parts of Bangladesh: HCI and Machine Learning Based Approach

2020 ◽  
pp. 7-15
Keyword(s):  
Machine Learning ◽  
Food Security ◽  
Crop Production ◽  
Performance Metrics ◽  
Machine Learning Algorithms ◽  
Production Level ◽  
Soft System Methodology ◽  
Average Production ◽  
The Impact ◽  
System Methodology

As Bangladesh is an agricultural country, the economy, as well as the food security of this country, mostly depends on the production level of different crops over the year. Therefore, there exists immense pressure on exaggerated crop production due to the fast growth of the population. But, the average production level is being hampered by the bad nature of the weather. We have conducted a survey on near about 100 farmers of two northern districts of Bangladesh: Pabna and Rajshahi and assessed the impact of rough nature on production. According to farmers and agriculturalists, it is noticed that rough weather causes about 30% to 70% production shortage than expectation with all other factors remaining constant. In this study, we have adopted Human-computer interaction (HCI) based approach (Soft System Methodology-SSM) to this aspect for efficacious collaboration with root-level farmers and agricultural trainers providing ease for understanding weather-related issues on the production of crops. Finally, some machine learning algorithms were also implemented on the obtained dataset to accurately classify the range of production level of rice and a comparison is made among the algorithms based on performance metrics. Moreover, an android based application is created to depict the summary of the study.

Carbon Dioxide Capture Using Sorbent-Loaded Hollow-Fiber Modules for Coal-Fired Power Plants

2021 ◽  
pp. 1-28
Author(s):  
Bachir El Fil ◽  
Dhruv C. Hoysall ◽  
Srinivas Garimella
Keyword(s):  
Carbon Dioxide ◽  
Power Plant ◽  
Hollow Fiber ◽  
Carbon Capture ◽  
Power Plants ◽  
Carbon Dioxide Capture ◽  
Electrical Energy ◽  
Parasitic Load ◽  
Temperature Swing Adsorption ◽  
The Impact

Abstract The impact of post-combustion carbon dioxide capture on the performance of a power plant is evaluated. A model of a coal power plant with post-combustion temperature swing adsorption CO2 capture using sorbent-loaded hollow fibers is presented. The resulting performance and cost of carbon capture are compared with those of other adsorption-based technologies. A parametric analysis of the performance of the power plant with respect to key parameters in the hollow fiber module operation is presented. It is found that electrical energy consumption for the compression of CO2 is a major parasitic load common to all absorption technologies and accounts for almost half of the total parasitic load. The effect of source temperature, flue gas fan and coupling fluid pump flow rates on overall system performance is presented. The impacts of different carbon capture technologies on the same coal-fired power plant are compared. Hollow fiber modules had the lowest parasitic load on the power plant, followed by KS-2 based carbon capture.

Types of Faults and Condition Monitoring Methods of Induction Motors

2019 ◽  
pp. 131-162
Author(s):  
Maheswari M. ◽  
Gunasekharan S
Keyword(s):  
Induction Motors ◽  
Supply Voltage ◽  
Raw Materials ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Constant Speed ◽  
Working Environment ◽  
Monitoring Methods ◽  
Bearing Fault ◽  
Complete Failure

Induction motors are the electromechanical devices used to convert electrical energy into mechanical energy and work under the principle of mutual inductance. They have stator and rotor as two major parts. They run at constant speed when the supply voltage and frequency are constant and are suited for constant speed drives. They have rugged construction but working environment causes different faults. As per IEEE and EPRI study on induction motor faults, bearing fault and stator faults are 46% and 36%, respectively. The broad categories of the fault are stator winding fault, broken rotor fault, rotor mass unbalance fault, bowed rotor faults, single phasing fault, bearing fault, and crawling. Unbalanced stator voltage and current, oscillations in torque, drop in efficiency and torque, overheating and unwarranted vibration are the effects of these faults. Undetected faults cause complete failure of motor and it is costly in terms of lost production time, maintenance cost, and wasted raw materials.

scholarly journals Design and Analysis of Technical Economics of Off-grid Systems Solar Power Plant Using Homer at Cemara Island, Brebes Regency

2019 ◽  
Vol 125 ◽  
pp. 11002
Author(s):  
Jaka Windarta ◽  
Denis ◽  
Agung Nugroho ◽  
Bimo Bagaskoro
Keyword(s):  
Power Plant ◽  
Solar Power ◽  
Electrical Energy ◽  
Design Calculation ◽  
Solar Power Plant ◽  
Solar Panels ◽  
Coastal Tourism ◽  
Cost Of Energy ◽  
The Cost ◽  
The Impact

Cemara Island is a coastal tourism area that has not been electrified and this problem becomes an obstacle for local residents to use electrical energy services. The impact of the absence of facilities in the form of electrical installations is that coastal tourism activities are not optimal. These Photovoltaic technologies may convert solar energy into electrical energy through photovoltaic effects. For this reason, The Solar power plant can be the solution to the problems in Cemara Island. However, technical and economic analysis is needed. From the result of solar system design calculation, it was obtained the number of solar panel capacity is 8x150Wp, solar charge controller of 40A, 4 units of battery with 100Ah specifications, and 2000W of the inverter. By using Homer, it can be seen that the amount of power produced by solar panels is 1746kWh/year. With an initial investment of $3745, in the scenario of using interest at 6%, the net present cost is $6534, the cost of energy value is $1,06/kWh, and BEP occurring at 11th year. Then in the scenario without using interest, the net present cost value is $8848, the value of cost of energy is $0.755/kWh and BEP occurring at 25th year.

scholarly journals Experimental study applied to the lime hydration process, in a thermoelectric coal power plant unit

2020 ◽  
Author(s):  
Rodrigo Saraiva Dantas ◽  
Maria Alejandra Liendo ◽  
Vera Lucia Duarte Ferreira ◽  
Rodrigo Bortoluzzi
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Hydrated Lime ◽  
Hydration Process ◽  
Maximum Temperature ◽  
Main Process ◽  
Coal Power Plants ◽  
Coal Power ◽  
The Impact

Abstract Coal Power Plants need to control SO 2 emissions to the atmosphere from the boiler flue gases, in order to reach standards according to guidelines determined by the Conselho Nacional de Meio Ambiente - CONAMA. For this purpose hydrated lime is used, which is, in fact, produced from lime at the power plant. Hydrated lime is injected into the equipment called desulphuriser that operates capturing the sulfur dioxide from the boiler flue gas. Due to the importance of this process, the present work aimed to evaluate several points that involve: the production of hydrated lime from lime, the analysis of the quality of lime received, the study of the hydration process. Moreover it was evaluated the impact of the temperature of reaction through to the hydration efficiency according to the methodology and routine proposed. In addition, complementary analysis were carried out on the characterization of lime and hydrated lime and the correlation between the main process parameters measured and recorded in lime hydration control system. In relation to the results of hydration efficiency, it was possible to observe its increase when the maximum temperature of the reaction stage was lower, reaching results up to 85%.

scholarly journals KAJIAN PENENTUAN JENIS DAN UKURAN SARANA ANGKUTAN BATUBARA DARI PELABUHAN SORONG KE PLTU KTI = STUDY FOR TYPE AND TONNAGE OF SEA TRANSPORTATION MEANS OF PORT ON COAL POWER PLANT SORONG TO PLTU KTI

2016 ◽  
Vol 9 (2) ◽  
pp. 93-99
Author(s):  
Sjafril Sjafril Karana
Keyword(s):  
Power Plant ◽  
Method Comparison ◽  
Electrical Energy ◽  
Marine Transportation ◽  
The Third ◽  
Energy Needs ◽  
Port Facilities ◽  
Sea Transportation ◽  
Coal Power ◽  
Coal Supply

Abstarct In line with government policy related to the addition of the electrical energy needs continue to rise , especially in Eastern Indonesia, in accordance with the plan of PT PLN ( Persero ) until 2019, and will have built a power plant with a variety of capacities, including in Ambon, Tidore and Jayapura. To meet the fuel needs ofthe power plant , coal as grilled planned to be supplied from the port of Sorong , and in 2014 the third power plant at that location will be operated. Ensuring the availability of coal to remain secure in the power plant, of course, required a number of marine transportation facilities in accordance with the amount of coal supply to the power plant, through which water condition, and the condition of the port facilities. This study is based on data obtained from the results of a field visit to Sorong and supported by information and other data. Methods used to determine the type and tonnage ships are based on ship method comparison . The results showed that the type of marine transportation to transport coal from the port of Sorong to the location of the power plant is Self Propelled Barge vessel types with the tonnage of 6000 Tons and 12000 Tons. Abstrak Sejalan dengan kebijakan pemerintah terkait dengan kebutuhan energi listrik yang terus meningkat khususnya di Kawasan Timur Indonesia, maka sesuai dengan rencana PT PLN (Persero) sampai tahun 2019, telah dan akan dibangun sejumlah PLTU dengan berbagai kapasitas diantaranya di Ambon, Amurang dan Jayapura. Untuk memenuhi kebutuhan bahan bakar pada PLTU tersebut, batubara sebagai bahan bakarnya direncanakan akan di datangkan dari pelabuhan Sorong. Untuk menjaga ketersediaan kebutuhan batubara di sejumlah PLTU tersebut tentunya diperlukan sejumlah sarana transportasi yang sesuai dengan kondisi perairan dan kondisi sarana dan prasarana pelabuhannya. Penelitian ini di dahului dengan study literature kemudian dilanjutkan dengan kunjungn lapangan, baik ke Pelabuhan Sorong sebagai pelabuhan asal maupun ke beberapa PLTU sebagai pelabuhan tujuan. Metode yang digunakan untuk menentukan jenis kapal yaitu berdasarkan metode kapal pembanding, sedangkan tonnage kapal ditentukan berdasarkan jumlah muatan yang akan diangkut. Hasil kajian menunjukkan bahwa jenis sarana transportasi laut untuk mengangkut batubara dari pelabuhan Sorong ke berbagai PLTU tersebut, sesuai jarak yang akan ditempuh, kondisi cuaca dan perairan di Kawasan Timur Indonesia adalah kapal jenis Self Propelled Barge, dengan tonnage 6000 Ton dan 12.000 Ton.

scholarly journals Pattern of Integrated System of Smallholder Beef Cattle Central in Tegal Regency

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
Aji Gunawan ◽  
Akhmad Sodiq ◽  
Krismiwati Muatip ◽  
Novie Andri Setianto
Keyword(s):  
Enterprise Systems ◽  
Integrated System ◽  
System Thinking ◽  
Integrated Systems ◽  
Soft System Methodology ◽  
Self Sufficiency ◽  
Livestock Productivity ◽  
The Impact ◽  
System Methodology ◽  
Livestock Systems

Purpose of this research is to focus on importance of knowing the activities of smallholder enterprise systems, types and trends in the patterns of integrated systems adopted, the impact of implementing integrated systems and the implications for sustainability of livestock systems. This research also emphasize the importance of opportunities in enhancing and increasing livestock productivity and increasing production in smallholder farms and developing the easiest formulation of strategies for sustainable livestock systems. A qualitative method using Soft System Methodology (SSM) from System Thinking was chosen to visualize the activities of smallholder enterprise systems and the pattern of integrated systems are presented descriptively. The next study method of quantitative is used to determine the impact of livestock productivity on each applied integrated systems presented comparatively. Soft System Methodology succeed to visualize smallholder enterprise systems at the level of individual and community level of farmer. Farmer’s group activity  influence the pattern of integrated systems that impacted on beef cattle’s productivity. The ICLFS pattern promotes a way of optimally utilizing agroecosystems and it has potential and become candidate system that be able in enhancing and increasing productivity, increasing livestock production and farmer's income, and realize beef self-sufficiency.  

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