scholarly journals Studi Perencanaan Penerangan Jalan Umum Panel Surya di Kelurahan Gading Kasri Kecamatan Klojen

2021 ◽  
Vol 8 (1) ◽  
pp. 16-21
Author(s):  
Asfari Hariz Santoso ◽  
Ahmad Hermawan ◽  
Muhammad Azam Wian Panantuan

Malang City is a city that has an increasing need for electrical energy in the technological era, which today is very much needed in fulfilling daily life, both for household, social and industrial needs. One of them is the supply of electrical energy for Public Street Lighting (PJU). If you only rely on the supply of electrical energy from grid, this is a heavy burden that must be borne by the Malang City Regional Budget to pay the electric energy consumption bill for the PJU. This study aims to determine the comparison of the use of conventional PJU with solar powered PJU (PJUTS) in the area of ​​Gading Kasri Village, Klojen District, Malang City both in terms of technical installations which include solar panels, batteries, and charger controllers as well as from an economic point of view. That shines for 5 hours every day, the solar panel power specifications are 240 Wp with 37 points of light. Budget calculations using the ACS (Annual cost system) which is obtained in the 16th year the difference from the initial investment costs and revenue from sales met at BEP (break event point) amounting to Rp. 256,761,376.00.

2020 ◽  
Vol 9 (2) ◽  
pp. 125-134
Author(s):  
Kurnia Paranita Kartika ◽  
Riska Dhenabayu

This study aims to design a Solar Home System with an Arduino-based Smart Switching system so that the use of electrical energy generated by solar panels can be adjusted without adding power from other electricity sources, such as PLN. Calculation of Leveled Cost of Energy (LCOE) is used as the basis for the switching process that will be carried out to regulate the use of household appliances that are routinely used, regulate electricity consumption automatically, minimize usage, and calculate the effectiveness of electric power usage. The way SHS works is to collect electrical energy from sunlight, then convert DC voltage to AC so that it can be used to run household electronic equipment. To accommodate the adequacy of electrical power, an automatic adjustment is made for household appliances that are routinely used, namely house lights, which includes setting the lights on and off and the number of lights that can be activated. The advantage of this research is that the SHS system is integrated with the automatic setting of the lights installed in the house so that the number of lights on will adjust the availability of electrical energy in the battery. In addition, with the LCOE method, the level of usage can be calculated so that users can save electricity. From the results of usage testing, it is found that the application of this switching technology provides benefits for users because it is no longer dependent on PLN supply. From an economic point of view, based on the calculation of Leveled Cost of Energy (LCOE), there is a kWh value savings of Rp. 77, - for each kWh price or about 4.53% compared to purchasing electricity with prepaid mode.


Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3864 ◽  
Author(s):  
Angelica Liponi ◽  
Claretta Tempesti ◽  
Andrea Baccioli ◽  
Lorenzo Ferrari

In the last years, an increasing number of countries has been affected by water shortage. Seawater desalination driven by solar energy, which is usually available in arid regions, might be a solution to satisfy the freshwater demand. In this study, the feasibility of a stand-alone multi-effect desalination (MED) plant driven by solar energy for an isolated community was studied. The system was made up of a solar field, a MED unit, and a thermal storage that mitigated solar energy fluctuations. Simulations with different top brine temperature and inclination and number of the solar panels were carried out in Matlab and Aspen Plus on an hourly basis by considering one typical meteorological year for ambient temperature and solar radiation. Two different sources of electrical energy were considered: A photovoltaic (PV) field and a diesel generator. The results were compared from an energetic and economic point of view, by considering the adoption of plastic as a material for MED heat exchangers. The maximum water production was obtained with December as the design month. Polytetrafluoroethylene heat exchangers allowed the cost of water to be reduced up to 9.5% compared to conventional exchangers. The lowest cost of water (7.09 $/m3) was obtained with September as the design month and a tilt angle of 45° with the PV field as the electrical power source.


2012 ◽  
Vol 16 (3) ◽  
pp. 131
Author(s):  
Didik Ariwibowo

Didik Ariwibowo, in this paper explain that energy audit activities conducted through several phases, namely: the initial audit, detailed audit, analysis of energy savings opportunities, and the proposed energy savings. Total energy consumed consists of electrical energy, fuel, and materials in this case is water. Electrical energy consumption data obtained from payment of electricity accounts for a year while consumption of fuel and water obtained from the payment of material procurement. From the calculation data, IKE hotels accounted for 420.867 kWh/m2.tahun, while the IKE standards for the hotel is 300 kWh/m2.tahun. Thus, IKE hotel included categorized wasteful in energy usage. The largest energy consumption on electric energy consumption. Largest electric energy consumption is on the air conditioning (AC-air conditioning) that is equal to 71.3%, and lighting and electrical equipment at 27.28%, and hot water supply system by 4.44%. Electrical energy consumption in AC looks very big. Ministry of Energy and Mineral Resources of the statutes, the profile of energy use by air conditioning at the hotel by 48.5%. With these considerations in the AC target for audit detail as the next phase of activity. The results of a detailed audit analysis to find an air conditioning system energy savings opportunities in pumping systems. Recommendations on these savings is the integration of automation on the pumping system and fan coil units (FCU). The principle of energy conservation in the pumping system is by installing variable speed drives (VSD) pump drive motor to adjust speed according to load on the FCU. Load variations FCU provide input on the VSD pumps to match. Adaptation is predicted pump can save electricity consumption up to 65.7%. Keywords: energy audit, IKE, AC


2018 ◽  
Vol 67 ◽  
pp. 04011
Author(s):  
Sunaryo Sunaryo ◽  
Adri Wirawan Ramadhani

Indonesia has more than 17,000 islands and has plenty of beautiful beaches and underwater spots which have great potential for maritime tourism. Tourism was ranked 3rd on Indonesia's foreign income and plays an important role for the country’s ecomony. Despite having potential advantages, the government has not yet maximized its efforts to develop the attractiveness of its maritime tourism. Beside the beautiful spots Indonesia is also blessed with all year long sun shine, which could be tapped as renewable and green energy as substitution to fossil fuel. Refer to these great advantages of natural resources the research was aimed to support the government’s program in developing its maritime tourism and to promote the use of green and renewable energy by designing a solar-powered tourism recreational boat which has 12 meters of length. The paper is focused on the design of solar energy and its electrical system, which includes conversion of solar energy to electrical energy and store it in the battery, the required electrical power is also predicted based on the appliances and equipment installed in the boat, the optimum attachment of solar panels on the boat structure is also calculated. All the methods and information we use are obtained from literature study, discussion with experts, and surveys to Jagur as solar-powered electric boat from Universitas Indonesia.


2021 ◽  
Vol 129 ◽  
pp. 04001
Author(s):  
Dumitru Alexandru Bodislav ◽  
Florina Bran ◽  
Carol Cristina Gombos ◽  
Amza Mair

Research background: This research paper represents an overview of what artificial intelligence is, what are its roots, and what is the next big thing regarding the domain. In this paper we try to highlight how the domain is growing and what is the difference between the ideology, the business factor and the human factor. We try to create a big picture on the entire phenomenon by creating a parallel between machine learning, artificial intelligence and the influence of technological breakthrough from a hardware perspective. Purpose of the article: The paper is built as a tool in understanding technology, globalization and the pathway to success and scientific glory for what can be seen as the industry of artificial intelligence. The tools presented in the research have the purpose to create an easier path to how we can develop this domain by accelerating theoretical processing and business analytics that come together to form the next level of machine learning/artificial intelligence; research and development, everything being filtered from an economic point of view. Methods: The used research method is based on fundamental analysis of the artificial intelligence domain and its purpose in the complexity of globalization and economic development. Findings & Value added: The paper tries to offer a tool for building a better understanding of the next decade in the domain of artificial intelligence.


2018 ◽  
pp. 153-168
Author(s):  
Magdalena Dziedzic

In contemporary contract and consumer law, obligations to inform are an example of instruments (protective ones) which imposes on business entities a duty to make a statement of knowledge (a representation), the content of which is determined by regulations and the purpose of which is to aid the consumer in taking a well-informed, rational decision. Appropriate regulations referring to liability for failing to carry out this obligation to inform aim to maintain optimal trust between the contracting parties and, as a result, lead to a balance in the parties’ position, at the same time upholding the principle of the freedom of contract. In accordance with the fundamental assumption in European consumer law, one’s liability towards a consumer should meet the criteria of both efficiency and proportionality, which means that one should not strictly consider such liability purely formally, i.e., as maintaining an economic balance between the parties. The sanction the company shall incur is to serve the actual satisfaction of the interests of the consumer, and not only to make a profit. Additionally, the sanctions for neglecting the obligation to inform are expected to encourage companies to comply with them. Neglecting this obligation to inform in the pre-contractual phase may take the form of not providing information which is required and explicitly defined by law or providing incomplete information. A large amount of detail in determining a business’s responsibility is presumedto guarantee the consumer knowledge of his/her rights and to enable him/her to evaluate the risks resulting from entering into a particular transaction. One must not, however, ignore the fact that providing excessive, thus illegible, information must be treated equally to non-disclosure of such information, which may result in infringement of the aforementioned regulations. Neglecting the obligation to inform may also arise in such a case where the consumer is not provided with a particular piece of information, despite the lack of a definite legal basis in this regard – such as a detailed regulation contained in an act – but such a duty would result from a general loyalty duty between the contracting parties. In the beginning, it should be noted that the liability for an infringement of the pre-contractual obligation to inform is characterised by system heterogeneity. In particular, it refers to the distinct consumer protection regime. It is very often the case that depending on the contractor’s status (professional or nonprofessional) the legal consequences of failing to inform or improperly informing are framed in different ways. One must bear in mind the difference between solely the failure to inform or to improperly carry out the pre-contractual obligation to inform (pursued within pre-contractual liability, fundamentally according to an ex delicto regime) and the consequences arising from the content of the delivered information, i.e., the guarantee of definite elements in the legal relationship of an obligatory nature (assigned to the classic liability in an ex contractu regime). The subject of civil liability for the infringement of duties to inform can be analysed from two perspectives: firstly, from an economic point of view, i.e., whether for the aggrieved party and for the market at large it would be more favourable for the infringement of the duty to inform to be pursued within an ex contractu or ex delicto regime, and secondly, from the perspective of the theory of law, whether for the system of contract law it would be better for this liability to be pursued within an ex contractu or ex delicto regime. In response to the second question, the position of academics is that the liability for the violation of trust due to failing to properly inform the consumer should be pursued in an ex delicto system in order to maintain the internal cohesion of contract law.


2014 ◽  
Vol 659 ◽  
pp. 431-434
Author(s):  
Cătălin George Popovici ◽  
Marius Costel Balan ◽  
Marina Verdeș ◽  
Vasilică Ciocan ◽  
Andrei Burlacu ◽  
...  

One of the effects of technological development of all human societies over the past century is more pronounced increase in energy consumption, but more pronounced dependence on fossil fuel consumption, especially as oil, natural gas and coal.The paper presents a comparative analysis of technical and economic point of view of two systems, the first using the classical system (national electricity grid) and the second using the new unconventional technology with photovoltaic systems for administrative building in rural areas.For correct evaluation of the performance of this systems providing electrical energy requires some assumptions about the consumption of electricity, the solar radiation intensity, the energy cost and the climate zones of the location.


2021 ◽  
Author(s):  
Hans Lustfeld

Abstract The main advantage of wind-solar power is the electric power production free of CO2. Its main disadvantage is the huge volatility of the system [national electric energy consumption powered by wind-solar power]. In fact, if this power production, averaged over one year, corresponds to the averaged electric consumption and is intended to replace all other electric power generating devices, then controlling the volatility of this system by using storage alone requires huge capacities of about 30TWh, capacities not available in Germany. However, based on German power data over the last six years (2015 till 2020) we show that the required storage capacity is decisively reduced, provided i) a surplus of wind-solar power is supplied, ii) smart meters are installed, iii) a different kind of wind turbines and solar panels is partially used, iv) a novel function describing this volatile system, is introduced. The new function, in turn, depends on three characteristic numbers, which means, that the volatility of this system is characterized by those numbers. When applying our schemes the results suggest that all the present electric energy in Germany can be obtained from controlled wind-solar power. And our results indicate that controlled wind-solar power can produce the energy for transportation, warm water, space heating and in part for process heating, requirering an increase of the electric energy production by a factor of 5. Then, however, a huge number of wind turbines and solar panels is required changing the appearance of German landscapes fundamentally.


Jurnal METTEK ◽  
2018 ◽  
Vol 4 (1) ◽  
pp. 31
Author(s):  
K G Trisna Upadana Putra ◽  
I Gusti Bagus Wijaya Kusuma ◽  
Made Sucipta

Permintaan energi listrik mengalami peningkatan, seiring peningkatan pertumbuhan populasi penduduk dan banyaknya industri. Tingginya permintaan energi listrik menjadi sebuah tantangan untuk produsen listrik, dalam memenuhi kebutuhan pelanggan akan energi listrik. Produsen listrik terbesar di Bali adalah PT. Indonesia Power UP Bali. Pembangkit yang dimiliki yaitu PLTDG dengan kapasitas produksi listrik 200 MW dioperasikan menggunakan bahan bakar gas LNG dan minyak solar (HSD/LFO). Dikarenakan penggunaan minyak solar dibatasi, maka PLTDG dioperasikan dengan gas LNG. Perbedaan bahan bakar yang digunakan mempengaruhi unjuk kerja dari pembangkit. Analisa unjuk kerja memberi gambaran dalam sisi keteknikan dan analisa BPP pembangkitan memberi gambaran dalam sisi keekonomian. Penelitaian ini dilakukan dengan cara perhitungan menggunakan persamaan-persamaan unjuk kerja mesin diesel, kemudian dibandingkan unjuk kerja PLTDG menggunakan bahan bakar LNG dan minyak solar dan dianalisa secara keekonomian. Hasil yang didapat yaitu unjuk kerja PLTDG menggunakan minyak solar lebih besar tetapi dari sisi keekonomian hasil BPP PLTDG menggunakan gas LNG lebih ekonomis. Demand for electric energy has increased, as population growth increases and the number of industries. The high demand for electrical energy becomes a challenge for electricity producers, in meeting the needs of customers for electrical energy. The largest power producer in Bali is PT. Indonesia Power UP Bali. The power plant owned by PLTDG with 200 MW electricity production capacity is operated using LNG gas and diesel fuel (HSD/LFO). Due to the use of diesel fuel is limited, the PLTDG is operated with LNG gas. The difference in fuel used affects the performance of the plant. Performance analysis gives an overview in terms of engineering and BPP analysis provides an overview of the economy side. This research is done by calculation using diesel engine performance equation, and then compared the performance of PLTDG using LNG and diesel fuel and analyzed economically. The results obtained are the performance of diesel powered PLTDG larger but in terms of economics of BPP PLTDG results using LNG gas is more economical.


Author(s):  
A. Sulym

The paper deals with the justification of the need to use an asynchronous traction electric drive on the metro rolling stock. The advantages of using an asynchronous traction electric drive in comparison with a DC commutator motor drive are formulated. The characteristics of modern innovative metro rolling stock with asynchronous traction electric drive of domestic and foreign production are analyzed. Aspects of the choice of a variable frequency asynchronous traction electric drive for innovative rolling stock are formulated and the existing typical algorithm of such choice is given. The main reasons for the irrational choice of traction asynchronous electric drive for the metro rolling stock are considered and the consequences of such a choice are analyzed. It is proposed to improve the methodology for selecting a variable frequency traction asynchronous electric drive for the metro rolling stock in terms of such an important operational factor as the specific cost of electrical energy for traction. The rational parameters of the variable frequency asynchronous traction electric drive according to the proposed procedure for the specified characteristics of the metro rolling stock are specified. The reserves of energy savings for the given conditions due to the introduction of an asynchronous traction electric drive with rational parameters on the innovative rolling stock are determined. It is established that the efficiency factor of the asynchronous traction motor significantly affects the specific electric energy consumption for the metro rolling stock traction and operating costs.


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