scholarly journals PERENCANAAN DAN ANALISIS KELAYAKAN INVESTASI PROYEK PEMASANGAN KAPASITOR BANK PADA INSTALASI PEMANFAATAN ENERGI LISTRIK

2021 ◽  
Vol 9 (1) ◽  
pp. 77-82
Author(s):  
Epiwardi ◽  
Ruwahyoto ◽  
Heri sungkowo
Keyword(s):  
Payback Period ◽  
Economic Life ◽  
Water Pump ◽  
Energy Usage ◽  
Capacitor Banks ◽  
Water Pumping ◽  
Pump Station ◽  
Pumping Stations ◽  
Feasibility Test ◽  
The Cost

The low power factor in the electricity installation of Sumber Wendit 3 water pumping stations causes a bill of excess reactive energy usage or kVARh, so that the cost of using electricity becomes higher. The excess use of reactive energy can be compensated by additional investment in installing capacitor banks in the main distribution panel (MDP) Sumber Wendit 3 water pump station. Based on the data and problems, it is planned to install capacitor banks that meet the standards with a target of 0.90 and 0.95 lagging. From the results of the planning, we need 150 kVAR and 250 kVAR capacitors, with an investment value of Rp. 94,983,790 and - Rp. 120,781,210. After an investment feasibility test using the Payback Period (PP) method, it is known that for a 150 kVAR bank capacitors, the investment return is technically 2.88 months and economically is 4.01 and 3.17 months. For 250 kVAR bank capacitors, the return on investment is technically 3.66 months and economically 5.1 and 4.03 months. When compared with the economic life of the investment is 10 years, the investment of the bank capacitor installation project is very profitable and feasible to carry out

PSO Applied to Reduce the Cost of Energy in Water Supply Networks

2013 ◽  
Vol 409-410 ◽  
pp. 703-706 ◽  
Author(s):  
Bruno Melo Brentan ◽  
Edevar Luvizotto Jr. ◽  
Lubienska Cristina L.J. Ribeiro
Keyword(s):  
Water Supply ◽  
Extended Period ◽  
Water Supply Systems ◽  
Operational Parameters ◽  
Supply Networks ◽  
Water Pumping ◽  
Cost Of Energy ◽  
Pumping Stations ◽  
The Cost ◽  
Supply Systems

The growth of urban population and subsequent expansion of the cities impose difficulties of gather a reliable water supply systems that attend the fluctuations of demand throughout the day, and their operation with appropriate hydraulic and operational parameters. The search of better routines for water pumping stations with both starting and stopping of pumps or use of variable speed devices has become increasingly common, and the motivation of this search is found in the need for energy saving. But the task is arduous and becomes fertile field for the application of modern techniques and robust optimization. Noteworthy are currently those that seek their inspiration in nature systems, such as Particle Swarm Optimization, which is based on intelligence of groups, such as schools of fish or swarms of bee. By this way, the present work aims to contribute to the topic, developing a hybrid algorithm (simulator-optimizer) for determination of optimized routines for pumping station i.e., routines that seek the best operational routine for an extended period of 24 hours.

Sea Water Pump Station Basin Mathematical Hydraulic Model Test (CFD Analysis)

2009 ◽  
Author(s):  
Sadegh Barzegar ◽  
Alireza Elhami Amiri ◽  
Pooyan Rahbar ◽  
Mehdi Assadi Niazi
Keyword(s):  
Mathematical Model ◽  
Free Surface ◽  
Model Test ◽  
Flow Rate ◽  
Sea Water ◽  
Water Pump ◽  
Pumping Station ◽  
Water Pumping ◽  
Pump Station ◽  
The Mathematical Model

Background and aim: A sea water intake, with original design of the six drum screen and twenty sea water pump intake with very different flow rate connected to header bay. The capacity of Origin Sea water intake including huge pump station and drum screen is 200,000 m3/hr. The purpose of the mathematical hydraulic model test of the sea water pumping station is to verify that the basin allows a good operating condition for each pump. To ensure a good operating condition for each pump, the design of the seawater basin has to insure: • A correct filter working; • Low transversal velocities; • A flow without vortex. Method and material: The mathematical model of the basin allows to know the flow and to verify: • The main dimensions of the pumping station; • The distance between the inlet ducts and the filters; • The distance between the filters and pump chambers. Result: in the first basin, the flow patterns no problems. Only swirl at the exit of culverts and near the free surface, and two areas where the flow has no velocity were observed. In the downstream other filters, we observe also a circulation that generates a tangential velocity. Conclusion: The mathematical model of the sea water pumping station has allowed calculating three cases (without and with filter stopped) for the low water level and nominal flow rate. In most difficult case, we observe some recirculation, mainly near the free surface, without more influence on principal flow. In the three cases, the distribution of the flow rate between the drum screens is uniform; the gap is inferior to 2%. At the entry of the pump chambers, the velocity fluctuations and the angle are low. Consequently, the secondary flows in pump chambers will be limited.

Analysis of energy efficiency of polder of pumping stations in a Slavsk district of the Kaliningrad region

2020 ◽  
pp. 15-20
Author(s):  
Yuriy Spirin ◽  
Vladimir Puntusov
Keyword(s):  
Energy Efficiency ◽  
Agricultural Land ◽  
Statistical Processing ◽  
Drainage Rate ◽  
Pumping Stations ◽  
Kaliningrad Region ◽  
Pumping Equipment ◽  
Excess Power ◽  
The Cost ◽  
Domestic Power

In the Kaliningrad region there are about 70 % of all polder lands in Russia. On these lands with high potential fertility, it is advisable to intensive agriculture. The area for the average moisture year is an area with excessive moisture, which indicates the need to maintain the rate of drainage on agricultural land. Many different factors play a role in ensuring the drainage rate, one of which is pumping stations and pumping equipment installed on them. An important parameter in the use of pump-power equipment is energy consumption, since in this industry it is a considerable expense item. Improving the energy efficiency of pumping stations on polders is a pressing issue today. At the majority of polder pumping stations, domestic power pumping equipment is installed with excess power and head of 4–8 meters, and a new one is selected based on the maximum possible head in a given place. In the Kaliningrad region, the energy efficiency of polder pumping equipment has never been analyzed. In this paper, a statistical processing of the geodesic pressure of water at the polder pumping stations of the Slavsk region for 2000–2002 was carried out. On the basis of these data and data on the hydraulic characteristics of pressure pipelines, the calculated water pressures were determined for the rational selection of pumping equipment. The calculation of the economic efficiency of pumps with optimal power compared with pumps of excess capacity. The results of the study can serve as a justification for the transition to the pumping equipment with less power and pressure, which will lead to a decrease in the cost of money for electricity.

scholarly journals Optimal Renovation Strategies through Life-Cycle Analysis in a Pilot Building Located in a Mild Mediterranean Climate

2021 ◽  
Vol 11 (4) ◽  
pp. 1423
Author(s):  
José Manuel Salmerón Lissen ◽  
Cristina Isabel Jareño Escudero ◽  
Francisco José Sánchez de la Flor ◽  
Miriam Navarro Escudero ◽  
Theoni Karlessi ◽  
...  
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Mediterranean Climate ◽  
Building Envelope ◽  
Economic Life ◽  
Hot Water ◽  
Optimal Solutions ◽  
Building Stock ◽  
Existing Building ◽  
The Cost

The 2030 climate and energy framework includes EU-wide targets and policy objectives for the period 2021–2030 of (1) at least 55% cuts in greenhouse gas emissions (from 1990 levels); (2) at least 32% share for renewable energy; and (3) at least 32.5% improvement in energy efficiency. In this context, the methodology of the cost-optimal level from the life-cycle cost approach has been applied to calculate the cost of renovating the existing building stock in Europe. The aim of this research is to analyze a pilot building using the cost-optimal methodology to determine the renovation measures that lead to the lowest life-cycle cost during the estimated economic life of the building. The case under study is an apartment building located in a mild Mediterranean climate (Castellon, SP). A package of 12 optimal solutions has been obtained to show the importance of the choice of the elements and systems for renovating building envelopes and how energy and economic aspects influence this choice. Simulations have shown that these packages of optimal solutions (different configurations for the building envelope, thermal bridges, airtightness and ventilation, and domestic hot water production systems) can provide savings in the primary energy consumption of up to 60%.

scholarly journals Studi Kelayakan Ekonomis Rencana Pembangunan Pelabuhan Sungai Liong Desa Berancah Kabupaten Bengkalis

2019 ◽  
Vol 3 (2) ◽  
pp. 146
Author(s):  
Nur Rahmani ◽  
Akmal Lazuardy
Keyword(s):  
Net Present Value ◽  
Payback Period ◽  
Economic Feasibility ◽  
Rate Of Return ◽  
Cost Ratio ◽  
Internal Rate Of Return ◽  
Benefit Analysis ◽  
Present Value ◽  
The Government ◽  
The Cost

The fish shelter port (TPI) is a need that needs to be prepared by local village officials and the government for every coastal village in Bengkalis Regency. This research was conducted in the Berancah village of Bantan District. The analysis in this study describes the economic feasibility mathematically for the construction of a fish storage port (TPI) by calculating the cost ratio (B / C ratio) benefit analysis, payback period (PP), net present value (NPV), and internal rate of return ( IRR). The results obtained from the NPV value (3,661,267,645), BCR value (0.943), IRR value of 10.01%, and PP are in the period of 30 years. Taken as a whole by standardizing the calculations, it can be concluded that the planned construction of a fish shelter in Berancah village is considered not economically feasible, but economic analysis is not merely a benchmark for feasibility, reviewed for the future many benefits will be received by the community around the location of the development plan so that it can improve the welfare of the community in Berancah village.

scholarly journals Analisis Kelayakan Ekonomi Mesin Pencacah Rumput Gajah Tipe Reel

Agrikultura ◽  
2018 ◽  
Vol 29 (3) ◽  
pp. 144
Author(s):  
Wahyu K Sugandi ◽  
Asep Yusuf
Keyword(s):  
Net Present Value ◽  
Payback Period ◽  
Economic Feasibility ◽  
Cost Ratio ◽  
Elephant Grass ◽  
Period Analysis ◽  
Benefit Cost Ratio ◽  
Cutting Machine ◽  
The Cost ◽  
Benefit Cost

ABSTRACTEconomic analysis reel type cutting machine for elephant grassThe need grass for fodder in the region Lembang has been increasing, but it does not followed byits quality. Therefore, cutting machine which is able to cut the fodder no more than 5 cm size is needed. The Laboratory of Agricultural Machinery and Machinery Department of Agricultural Engineering and Biosystem FTIP Unpad had been developed an elephant grass enchant machine inaccordance with the requirements of making the silage, but no economic feasibility analysis has been done for the machine. Therefore it was necessary to study the economic feasibility analysis of elephant grass cutting machine. The method used in this study was the economic analysis methodwhich includes the cost of production and the breakeven point, and business feasibility including net present value (NPV), benefit cost ratio analysis (BCR), internal rate of return (IRR) and payback period analysis (PBP). The results showed that the cost of production of elephant grass enemies was Rp 2,178 / kg with production breakeven 18.769 kg, BC ratio of 1.15, NPV1 of Rp 70,770, - NPV2 of Rp 61.333, - IRR of 27% and payback period during 2 months. So it can be concluded that the use of elephant-type elephant chopper machine was feasible to use.Keywords: Elephant grass, economic analysis, cutting machineABSTRAKKebutuhan rumput gajah untuk pakan ternak (silase) di daerah Lembang terus meningkat. Syarat pembuatan silase tersebut bahwa panjang potongan rumput gajah sebaiknya < 5 cm. Untuk itudiperlukan sebuah mesin pencacah rumput gajah sesuai syarat pembuatan silase. LaboratoriumAlat dan Mesin Pertanian Departemen Teknik Pertanian dan Biosistem FTIP Unpad telah mengembangkan sebuah mesin pencacah rumput gajah sesuai syarat pembuatan silase tersebut, tetapi belum dilakukan analisis kelayakan ekonomi untuk mesin tersebut. Oleh karena itdiperlukan suatu penelitian berkenaan dengan analisis kelayakan ekonomi mesin pencacah rumput gajah. Metode yang digunakan pada penelitian ini adalah metode analisis ekonomi yang meliputi biaya pokok produksi dan titik impas, serta kelayakan usaha yang meliputi net present value(NPV), benefit cost ratio analysis (BCR), internal rate of return (IRR) dan payback period analysis(PBP). Hasil penelitian menunjukkan bahwa biaya pokok produksi mesin pencacah rumput gajah adalah Rp 2.178/kg dengan titik impas produksi 18.769 kg, BC rasio sebesar 1,15, NPV1 sebesar Rp 70.770,- NPV2 = Rp 61.333,- IRR sebesar 27% dan payback period selama 2 bulan. Maka dapat disimpulkan bahwa pengunaan mesin pencacah rumput gajah tipe reel layak digunakan. Kata Kunci : Rumput Gajah, Analisis Ekonomi, Mesin Pencacah

scholarly journals Farmers’ participation in Water User Association in western Iran

2017 ◽  
Vol 35 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Saeed Gholamrezai ◽  
Fatemeh Sepahvand
Keyword(s):  
Water Resources ◽  
Water Consumption ◽  
User Association ◽  
Factors Affecting ◽  
Water User ◽  
Water User Association ◽  
Agriculture Sector ◽  
Water Pumping ◽  
Pumping Stations ◽  
Agriculture Water

AbstractOne of the main challenges of water scarcity is the water consumption in the agriculture sector. Therefore, optimizing water consumption and applying an optimal management in the agriculture sector is necessary. The implementation of a participatory management of water resources in the rural areas and the creation of Water User Association (WUA) can be a successful approach towards this management. That requires the continuity of the management, the comprehensive participation of farmers, and the exploitation of water resources; however, this action needs to understand the factors affecting the behavior of consumers. Thus identifying the factors influencing farmers’ intentions towards participation in WUA is essential. The purpose of this study is to identify factors affecting farmers' intentions towards participation in water user association, by theory of planned behavior (TPB). There are 21 agriculture water pumping stations active in Lorestan Province. Farmers at each agriculture water pumping stations make up a Water User Association. The population of this study consisted of all WUAs in western Iran (N = 1990), and through a proportional stratified random sampling technique farmers were selected (N = 133) from the population. Moreover, the validity of the questionnaire was confirmed by a panel of experts. The reliability of the questionnaire was calculated at pre-test stage for different parts of the questionnaire ranging from 0.83 until 0.91. The collected data were analyzed using Statistical Package for the Social Sciences 20 software. The results revealed that there were effective variables including subjective norm, attitude, and extension training courses which contributed to the importance of participation in the water management, and that the educational level of farmer was a controlled variable that could affect farmers' attitudes towards participating in Water User Association; these factors could explain 53% of farmers' participation totally.

scholarly journals ANALISIS KELAYAKAN USAHA PEMASARAN BIBIT BUAH (Studi Kasus Pada CV. Flora Chania di Kecamatan Palaran Kota Samarinda) (The Feasibility Analysis of Marketing Business of Fruit Seedling (Case Study at the CV. Flora Chania in Palaran Subcity, Samarinda City))

2021 ◽  
Vol 4 (1) ◽  
pp. 51
Author(s):  
FADHILLAH KUSUMA RAHAYU ◽  
SYARIFAH AIDA
Keyword(s):  
Net Present Value ◽  
Secondary Data ◽  
Legal Aspects ◽  
Technical Aspect ◽  
Payback Period ◽  
Cost Ratio ◽  
Net Benefit ◽  
Benefit Cost Ratio ◽  
The Cost ◽  
Benefit Cost

The purposes of this research were to determine the cost, revenue, and profit of fruit seedling marketing and the feasibility of marketing business of fruit seedling at the CV. Flora Chania in Palaran Subcity, Samarinda City. This research was conducted during 3 months from March to May 2019. The data were collected secondary data. The analysis included calculation of cost, revenue, profit, Net Present Value (NPV), Internal Rate of Return (IRR), Net Benefit Cost Ratio (Net B/C Ratio), dan payback period. The research results showed an average operational cost of IDR248,945,720.00 year-1 or IDR20,745,477.00 month-1, an average revenue of IDR349,900,000.00 year-1 or IDR29,083,333.00 month-1 and the average income of IDR100,818,566.00 year-1 or IDR8,326,547.00 month-1. This research found  the NPV value of IDR37,464,538.00 at a factor discount rate of 10%, IRR value of 4.6%, Net B/C Ratio value of 1.32, while the payback period of 1 year and 4 months. The results of this research  indicate that based on an assessment of technical aspect, management and legal aspects, market and marketing aspects, and financial aspect, the marketing of fruit seedling is feasible to be developed. 

scholarly journals Techno-economical study of solar water pumping system: optimum design, evaluation, and comparison

2021 ◽  
Vol 6 ◽  
pp. 41
Author(s):  
Hussein A. Kazem ◽  
Anas Quteishat ◽  
Mahmoud A. Younis
Keyword(s):  
Optimum Design ◽  
Meteorological Data ◽  
Average Energy ◽  
Cost Evaluation ◽  
Successful Operation ◽  
Solar Water ◽  
Water Pumping ◽  
Cost Of Energy ◽  
Simulation Results ◽  
The Cost

Solar water pumping systems are fundamental entities for water transmission and storage purposes whether it is has been used in irrigation or residential applications. The use of photovoltaic (PV) panels to support the electrical requirements of these pumping systems has been executed globally for a long time. However, introducing optimization sizing techniques to such systems can benefit the end-user by saving money, energy, and time. This paper proposed solar water pumping systems optimum design for Oman. The design, and evaluation have been carried out through intuitive, and numerical methods. Based on hourly meteorological data, the simulation used both HOMER software and numerical method using MATLAB code to find the optimum design. The selected location ambient temperature variance from 12.8 °C to 44.5 °C over the year and maximum insolation is 7.45 kWh/m2/day, respectively. The simulation results found the average energy generated, annual yield factor, and a capacity factor of the proposed system is 2.9 kWh, 2016.66 kWh/kWp, and 22.97%, respectively, for a 0.81 kW water pump, which is encouraging compared with similar studied systems. The capital cost of the system is worth it, and the cost of energy has compared with other systems in the literature. The comparison shows the cost of energy to be in favor of the MATLAB simulation results with around 0.24 USD/kWh. The results show successful operation and performance parameters, along with cost evaluation, which proves that PV water pumping systems are promising in Oman.

scholarly journals Energetic optimization and evaluation of a drinking water pumping system: application at the Rassauta station

2018 ◽  
Vol 19 (2) ◽  
pp. 472-481 ◽  
Author(s):  
Bouach Ahcene ◽  
Benmamar Saadia
Keyword(s):  
Neural Networks ◽  
Drinking Water ◽  
Water Demand ◽  
Forecasting Model ◽  
Energy Losses ◽  
Pumping System ◽  
Water Pumping ◽  
Pumping Stations ◽  
Regulation Model ◽  
The City

Abstract The energy overconsumption at drinking-water pumping stations creates considerable energy losses. For this reason we have developed an NNGA tool of pumping management which optimizes the consumed energy by the pumping system with respect to the hydraulic functioning conditions in the distribution tank. This tool includes two models: a forecasting model for drinking water demand based on artificial neural networks and an optimization model using genetic algorithms. The results of the NNGA tool were compared with two pumping plans: the plan based on the pumping regulation model, and the plan used by the company of water and sewage of the city of Algiers. The analysis result was done with the help of performed indicators that we have developed and which enable the evaluation and diagnosis of the energetic function's system.

Sign in / Sign up

Export Citation Format

Share Document