ANÁLISE COMPARATIVA DO CUSTO PARA APLICAÇÃO DE UMA LÂMINA DE IRRIGAÇÃO UTILIZANDO ENERGIA ELÉTRICA E DIESEL

2016 ◽  
Vol 31 (3) ◽  
pp. 259
Author(s):  
Arionaldo De Sá Júnior ◽  
Jacinto de Assunção Carvalho
Keyword(s):  
Low Voltage ◽  
Electric Energy ◽  
Electrical Energy ◽  
Minas Gerais ◽  
Linear Increase ◽  
Energy Company ◽  
Cost Of Energy ◽  
Irrigation Depth ◽  
Tariff Rates ◽  
The Cost

Objetivou-se com a realização deste trabalho, estimar o custo com energia elétrica e à diesel para aplicação de 1 milímetro de lâmina de irrigação em uma área de 1 hectare. O grupo tarifário considerado foi o “B” para baixa tensão e subgrupo “B2 - Rural”. Os valores tarifários aplicados foram obtidos na Companhia energética de Minas Gerais – CEMIG. O valor adotado para o diesel foi respectivo à média observada na região sul de Minas Gerais no segundo semestre de 2012. Para efeito de cálculos, os rendimentos globais do conjunto motobomba e alturas manométricas totais adotadas foram, respectivamente; 60%, 65%, 70%, 75% e 10, 25, 75, 100, 125, 150, 175 e 200 m.c.a. Para o cálculo do custo total com a aplicação da lâmina de 1mm ha-1 foi considerado que o custo com a energia na atividade de irrigação representa 65% e 75% para elétrica e diesel, respectivamente. Os resultados obtidos mostram um crescimento linear dos custos com energia com o aumento da altura manométrica total. A utilização de sistemas motobomba mais eficientes reduz o custo com energia elétrica na ordem de 7% a 20% e diesel entre 4% a 16%, para as situações propostas.Em todos os casos a energia elétrica é mais favorável com relação ao custo.Palavras-chave: Lâmina de irrigação, Motobomba, Tarifa, Grupo tarifário.COMPARATIVE ANALYSIS OF THE COST OF AN IRRIGATION DEPTH USING ELECTRIC ENERGY AND DIESELABSTRACT: The aim of this study was to estimate the cost of electricity and diesel use for application of 1 mm water depth in an area of 1 hectare. The tariff group considered was "B" for low voltage and subgroup "B2 - Rural". The applied tariff rates were obtained from the energy company of Minas Gerais - CEMIG. The value adopted for a liter of diesel fuel was the average observed in the southern region of Minas Gerais in the second semester  of 2012. To do the  calculation, the overall yields adopted for  the whole pump and manometer total elevation  were, respectively, 60%, 65%, 70%, 75% and 10, 25, 75, 100, 125, 150, 175, 200 meters of water column. To calculate the total cost of 1mm ha-1 application, it was considered that the cost of energy on irrigation activity represents 65% and 75% for electricity and diesel, respectively. The results showed a linear increase of energy costs by increasing the manometer total elevation. The use of more efficient pump systems reduces the cost of electric power in the range of 7% to 20% and of diesel by 4% to 16% considering the proposed situations. In all cases, the electrical energy is more advantageous regarding the cost.Keywords: Depth irrigation, Motor-pump, Tariff, Tariff Group.

scholarly journals Techno-Economic Feasibility Study of Investigation of Renewable Energy System for Rural Electrification in South Algeria

2018 ◽  
Vol 8 (5) ◽  
pp. 3421-3426 ◽  
Author(s):  
F. Chermat ◽  
M. Khemliche ◽  
A. E. Badoud ◽  
S. Latreche
Keyword(s):  
Greenhouse Gas Emission ◽  
Electrical Energy ◽  
Energy System ◽  
Economic Feasibility ◽  
Maintenance Cost ◽  
Management Algorithm ◽  
Cost Of Energy ◽  
The Cost ◽  
Operation And Maintenance Cost ◽  
Different Sources

This work aims to consider the combination of different technologies regarding energy production and management with four possible configurations. We present an energy management algorithm to detect the best design and the best configuration from the combination of different sources. This combination allows us to produce the necessary electrical energy for supplying habitation without interruption. A comparative study is conducted among the different combinations on the basis of the cost of energy, diesel consumption, diesel price, capital cost, replacement cost, operation, and maintenance cost and greenhouse gas emission. Sensitivity analysis is also performed.

RESEARCH OF ENERGY EFFICIENCY OF TWO-CHAMBER PULSE DEVICES FOR STAMPING

2021 ◽  
pp. 128-133
Author(s):  
А.Ю. Боташев ◽  
А.А. Мусаев
Keyword(s):  
Energy Efficiency ◽  
Combustion Chamber ◽  
Electrical Energy ◽  
Energy Carrier ◽  
Thermodynamic Efficiency ◽  
Total Energy Consumption ◽  
Cost Of Energy ◽  
Sheet Stamping ◽  
Fuel Mixtures ◽  
The Cost

Одной из разновидностей устройств, осуществляющих импульсные методы обработки давлением, являются двухкамерные устройства для листовой штамповки, использующие в качестве энергоносителя газовоздушные топливные смеси. Подача сжатого воздуха в камеру сгорания в рассматриваемом двухкамерном устройстве для листовой штамповки осуществляется компрессором. Проведен анализ термодинамических процессов, протекающих в камере сгорания и рабочем цилиндре двухкамерного устройства для листовой штамповки. При этом установлено, что энергия, затрачиваемая на работу компрессора, составляет около 45% от энергии, выделяющейся в камере сгорания. Получена зависимость для определения термодинамического КПД двухкамерных устройств для листовой штамповки, величина его составляет около 0,25. Установлено, что энергоэффективность двухкамерных устройств не уступает энергоэффективности традиционного штамповочного оборудования, при этом затраты на энергоносители двухкамерных устройств ниже за счет использования дешевого энергоносителя. В двухкамерном штамповочном устройстве для листовой штамповки электрическая энергия, используемая на работу компрессора, составляет менее 1/3 общей потребляемой энергии устройства. Поэтому при прочих равных условиях расходы на энергоносители будут значительно меньше, чем в штамповочном оборудовании, работающем на электрическом токе One of the types of devices that carry out pulse methods of pressure treatment are two-chamber devices for sheet stamping, using gas-air fuel mixtures as an energy carrier. The supply of compressed air to the combustion chamber in the considered two-chamber device for sheet stamping is carried out by a compressor. We carried out the analysis of thermodynamic processes taking place in the combustion chamber and the working cylinder of a two-chamber device for sheet stamping. We found that the energy spent on the operation of the compressor is about 45% of the energy released in the combustion chamber. We obtained the dependence for determining the thermodynamic efficiency of two-chamber devices for sheet stamping; its value is about 0.25. We established that the energy efficiency of two-chamber devices is not inferior to the energy efficiency of traditional stamping equipment, while the energy costs of two-chamber devices are lower due to the use of a cheap energy carrier. In a two-chamber die-forging device for sheet metal stamping, the electrical energy used to operate the compressor is less than 1/3 of the total energy consumption of the device. Therefore, all other things being equal, the cost of energy carriers will be significantly less than in stamping equipment operating on electric current

Hybrid Distributed Power Generation for an Isolated Rural Settlement in Masirah Island, Oman

2011 ◽  
Author(s):  
Saleh Al Saadi ◽  
Moncef Krarti
Keyword(s):  
Power Systems ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Small Community ◽  
Solar Pv ◽  
Cost Of Energy ◽  
Storage Batteries ◽  
Electrical Generation ◽  
The Cost

This paper summarizes the findings from a feasibility study of using renewable energy sources in combination with conventional power systems to meet the electrical requirements for an isolated island of Masirah in Oman. The study has been conducted to determine the best hybrid system to generate electrical energy needed for a small community of 500 residential buildings. A series of a simulation analyses have been carried out to evaluate and optimize different distribution technologies including photovolatics, wind and diesel for electrical generation in combination with storage batteries. It was found that the cost of energy could be reduced by as much as 48% compared to the cost for the baseline generation system currently used in the Masirah Island (i.e. diesel-driven generators). In particular, it was found that wind turbines in combination with storage batteries have a great impact in reducing the cost of generating electrical energy for the residential community. Moreover, solar PV panels were found unattractive under the current diesel price rates but could potentially become viable if the diesel prices increase. The paper outlines an optimal design for generating electricity for the community at lowest cost while minimizing carbon emissions.

scholarly journals Increasing the energy efficiency of an enterprise by point compensating of power quality distortions

2019 ◽  
Vol 140 ◽  
pp. 04010 ◽  
Author(s):  
Egor Zamyatin ◽  
Irina Voytyuk ◽  
Elena Zamyatina
Keyword(s):  
Power Quality ◽  
Electric Energy ◽  
Electrical Energy ◽  
Implementation Costs ◽  
Three Stages ◽  
Pareto Method ◽  
Compensating Devices ◽  
Quality Of Electrical Energy ◽  
The Cost

The cost of any product includes the cost of electrical energy in its production. Enterprises use various methods to reduce the cost of electric energy. One of the most common methods is to reduce the loss of active power in the distribution network of an enterprise. This is achieved by compensating for distortions in the power quality of electrical energy using compensating devices. The method presented in the article offers point compensation of distortions in the power quality indicators of electric energy. Point connection of compensating devices allows their small number to be used. But, at the same time, a greater effect is achieved. The connection points of compensating devices are determined by the developed method. The method includes three stages: collecting data on consumers of electric energy at an enterprise and on the topology of the distribution electric network, analyzing the results obtained using the developed algorithm, and determining connection points using the Pareto method. Also, the developed method was compared with the classical ones according to the criterion of the ratio of implementation costs to the effect of its application.

scholarly journals The cost load regulation and management of electrical energy by directions of impact on the components of total price

2021 ◽  
Vol 295 ◽  
pp. 02001
Author(s):  
Alexey Pleshkov ◽  
Aleksey Kopylov ◽  
Petr Ulyankin
Keyword(s):  
Electrical Energy ◽  
Energy Resources ◽  
Managerial Decisions ◽  
Regional Features ◽  
Cost Of Energy ◽  
Load Regulation ◽  
Kaliningrad Region ◽  
The Cost ◽  
The Impact ◽  
Total Price

The issues of optimizing regional pricing are especially acute for the Kaliningrad Region due to its exclave features. At the same time, the cost of energy resources has become one of the main issues in making managerial decisions. Recently, the so-called Technoparks have become one of the new forms of organizing the production process in a certain branch of industry, or a process that is at the junction of several branches. There are a variety of descriptions of the indisputable advantages of this work format for a specific technological process, however, the possibilities in the field of reducing the costs of consumed energy resources that arise with such a local siting of production are not discussed that often. According to the authors of the article, based on the structure of the tariff, it is possible to classify methods of reducing the cost price by the impact on the components of the final cost of energy supply services. It should be noted that the classification sign of saving methods will be precisely the component of the tariff, while the methods themselves can be aimed both at reducing the price expression of each component of the tariff and at the volume of services for this component. The authors have also identified regional features of the pricing processes in the energy industry.

scholarly journals The results of the competitiveness analysis of photovoltaic microgeneration systems in the Russian Federation

2019 ◽  
Vol 486 (5) ◽  
pp. 543-546
Author(s):  
T. S. Gabderakhmanova ◽  
O. S. Popel
Keyword(s):  
Energy Storage ◽  
Dynamic Modelling ◽  
Electrical Energy ◽  
Economic Feasibility ◽  
Government Support ◽  
Feasibility Assessment ◽  
Pv Systems ◽  
Cost Of Energy ◽  
Regulatory Standards ◽  
The Cost

The results of the economic feasibility assessment of photovoltaic (PV) microgeneration systems by the criterion of the cost of energy are presented. The assessment is based on dynamic modelling of three different configurations of grid-connected PV systems - without energy storage, with electrical energy storage and with thermal energy storage - performed for weather and electricity tariff conditions of several prospective Russian regions. Government support measures and regulatory standards currently developing in Russia for microgeneration technologies are taken into account. It is shown that under certain conditions PV microgeneration technologies could be economically feasible in some energy isolated areas and non-pricing zones of the wholesale electricity and capacity market of Russia, particularly in the Sakha Republic, whereas in pricing zones - couldn’t for any of the considered system configurations.

USING FAN COIL UNITS TO REDUCE ELECTRIC ENERGY CONSUMPTION FOR THE FAN DRIVE

2021 ◽  
pp. 28-36
Author(s):  
Борис Петрович Новосельцев ◽  
Ирина Игоревна Шамилова
Keyword(s):  
Energy Consumption ◽  
Ventilation System ◽  
Electric Energy ◽  
Electrical Energy ◽  
Industrial Building ◽  
Electric Energy Consumption ◽  
Traditional Scheme ◽  
The Cost ◽  
Ventilation Systems

Объём потребления энергии, в том числе и электрической, в нашей стране непрерывно увеличивается. В связи с этим возникает необходимость максимального снижения затрат электрической энергии. В статье рассматривается возможность снижения электрической энергии в приточных системах вентиляции за счёт использования вентиляторов-доводчиков. Приведены результаты аэродинамического расчета двух вариантов приточной системы вентиляции промышленного здания. Первый вариант - традиционная схема с одним общим центральным вентилятором. Второй вариант - схема с использованием вентиляторов-доводчиков на отдельных ветвях системы. В результате проведенных расчетов показано, что установка вентиляторов-доводчиков позволит существенно снизить нагрузку на привод центрального вентилятора. The volume of energy consumption, including electricity, in our country is constantly increasing. In this regard, it becomes necessary to reduce the cost of electrical energy as much as possible. The article discusses the possibility of reducing electrical energy in supply ventilation systems through the use of fans. We present the results of the aerodynamic calculation of two variants of the supply ventilation system of an industrial building. The first option is the traditional scheme with one common central fan. The second option is a scheme using fan coil units on separate branches of the system. As a result of the calculations, it is shown that the installation of fan coil units will significantly reduce the load on the central fan drive.

scholarly journals Economic Feasibility of Photovoltaic Micro-Installations Connected to the Brazilian Distribution Grid in Light of Proposed Changes to Regulations

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1529
Author(s):  
Gabriel Nasser Doyle de Doile ◽  
Paulo Rotella Junior ◽  
Priscila França Gonzaga Carneiro ◽  
Rogério Santana Peruchi ◽  
Luiz Célio Souza Rocha ◽  
...  
Keyword(s):  
Regulatory Agency ◽  
Energy Demand ◽  
Distribution Systems ◽  
Electrical Energy ◽  
Economic Feasibility ◽  
Distribution Grid ◽  
Cost Of Energy ◽  
Before And After ◽  
Scientific Papers ◽  
The Cost

Brazil is currently undergoing changes to regulations on distributed generation (DG), specifically for solar energy micro-generation. The changes proposed by the Brazilian Regulatory Agency suggest that only the cost of energy be compensated to investors. The service costs and other charges related to energy tariffs must be divided among consumers. Investors with existing installations and class entities have contested these proposals, calling them “sun-fees”. To date, no scientific papers have been published discussing these changes. The new regulations propose an end to cross subsidies, where all consumers (even those who do not have DG) pay for the transmission and distribution systems. This study compares the economic feasibility of micro-generation before and after implementing the new standards proposed by the regulatory agency. We used data on average electrical energy demand, energy price, and solar radiation in different regions. The national averages were used as a base comparison with other scenarios. The results show that projects are viable for all analyzed scenarios, however, after implementing the proposed changes, the discounted payback time is extended. This, however, does not make projects unfeasible.

scholarly journals PERANCANGAN SISTEM TRANSFER ENERGI SECARA WIRELESS DENGAN MENGGUNAKAN TEKNIK RESONANSI INDUKTIF MEDAN ELEKTROMAGNETIK

2014 ◽  
Vol 2 (2) ◽  
Author(s):  
Berri M Panggabean ◽  
Herman Halomoan ◽  
Nining Purwasih
Keyword(s):  
Energy Transfer ◽  
Low Voltage ◽  
Human Life ◽  
Slope Angle ◽  
Electric Energy ◽  
Electrical Energy ◽  
Mutual Inductance ◽  
Receiver Coil ◽  
Power Cable ◽  
Wireless Energy Transfer

Abstrak  Energi listrik merupakan salah satu kebutuhan pokok yang sangat penting dalam kehidupan manusia saat ini, di mana sampai saat ini pengiriman energi listrik komersial tegangan rendah 220 volt masih mempergunakan kabel listrik. Salah satu cara pengiriman atau transfer energi listrik yang terus dikembangkan sampai saat ini adalah transfer energi listrik  wireless.  Transfer energi listrik  wireless  memiliki  beberapa  kelebihan  dibandingkan menggunakan kabel  yaitu  dapat  meningkatkan kenyamanan dalam penggunaan peralatan listrik  dan  dapat mengurangi jumlah sampah elektronik. Metode yang digunakan untuk  transfer energi wireless pada tugas akhir ini menggunakan  teknik  resonansi induktif medan elektromagnetik.  Pengguna membuat  dua buah  kumparan tembaga berbentuk selenoid yang digunakan untuk menghasilkan induktansi bersama. Rangkaian transfer energi listrik wireless terdiri dari dua yaitu rangkaian pengirim dan rangkaian penerima. Rangkaian pengirim terdiri dari rangkaian LC osilasi dan rangkaian penerima merupakan penggabungan beberapa komponen elektronika.  Realisasi alat bekerja dengan baik dengan pengaturan komponen yang sesuai. Namun pengaruh jarak dan sudut kemiringan antar kumparan sangat mempengaruhi nilai energi listrik yang mampu ditransfer. Semakin jauh jarak antar kumparan,  maka semakin kecil energi yang mampu ditrasfer, demikian juga dengan sudut kemiringan kumparan. Semakin miring sudut kumparan penerima, maka semakin kecil energi listrik yang dihasilkan. Kata kunci :  induktansi bersama,   kumparan tembaga, rangkaian pengirim, rangkaian penerima, transfer energi wireless. Abstract  Electrical energy is one of the basic needs that are essential in human life today,  where until today the delivery of electrical energy commercial low voltage 220 volts still using power cable. One way of delivery or transfer of electric energy are constantly being developed to date  is the transfer of electrical energy wireless. Transfer of electrical energy wireless has several advantages over using a cable that can increase comfort in the use of electrical equipment and can reduce the amount of electronic waste. The method used for  wireless energy transfer in this paper uses an resonance techniques inductive electromagnetic field. User create two shaped copper solenoid coils used to generate the mutual inductance. Wireless electrical energy transfer circuit consists of two circuits that the transmitter and receiver circuit. Transmitter circuit consists of a series LC oscillation andreceiver circuit is a merger several electronic components. Realization tool works well with setting the appropriate components. However, the effect of distance and tilt angle between the coil greatly affect the value of the electricity that is able to be transferred. The farther away the distance between the coils, the smaller energy capable to be transfer. as well as the slope angle the coil. The more sloping angle of the receiver coil, the smaller the electric energy is generated.  Key word : mutual inductance, copper coils, transmitter circuit, receiver circuit, wireless energy transfer 

scholarly journals COMPARATIVE ANALYSIS OF THE ENERGY CONSUMPTION OF FIXED AND VARIABLE SPEED PRESSURE SYSTEMS

2020 ◽  
Vol 9 ◽  
pp. 363
Author(s):  
Ana Catarina Formigoni Abel ◽  
Diego Antônio Custódio
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Electric Energy ◽  
Variable Speed ◽  
Electric Energy Consumption ◽  
Cost Of Energy ◽  
Product Models ◽  
Average Potential Energy ◽  
The Cost ◽  
Frequency Inverter

The objective of this study was analyzing two pressure systems relative to energy consumption. One of the systems operates at a fixed speed and the other with variable speed by using a frequency inverter. It was selected two product models based on the water demand, which was calculated with the average flow rate spent per each type of sanitary appliance. Thus, it was possible to estimate the power consumed in each hour and then, calculate the electric energy consumption. The cost of energy per hour was also found, considering the current energy tariff. The results showed an economical use of the inverter compares to non-use. The average potential energy savings was 44.7%, and it was found R$ 369.11 of reduction in the monthly energy cost. Therefore, it is concluded the use frequency inverter is economically viable in relation to energy consumption and reduce the costs of electric energy.  

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