scholarly journals REDUCTION OF ENERGY LOSSES ON HEATING OIL CIRCUIT BREAKERS 35–110 KV IN JSC «CHERNIGIVOBLENREGO»

Author(s):  
Yevhen Kolenchenko ◽  
Viacheslav Bezruchko ◽  
Roman Buinyi ◽  
Igor Dihtyaruk

The analysis of the state of 35–110 kV circuit breakers in the Chernihiv region, which are on the balance sheet of the operator of the distribution system JSC «Chernigivoblenergo», has been carried out. It was shown that the number of circuit breakers that satisfy regulatory documents is only 18.9 % in 35 kV and 2 % in 110 kV power networks. Unfortunately, most of the 35–110 kV circuit breakers in the Chernihiv region are low-oil and bulk-oil type, which required heating during cold meteorological conditions. The article assess the duration of the circuit breakers heating and their drives, depending on the selected set point of the temperature and the averaging interval of the ambient temperature, and the value of technological energy losses. The article considers following ways to reduce technological costs for heating: optimization of the heating control system, replacement of oil circuit breakers with modern vacuum and SF6 circuit breakers, which require lower costs on heating, and applied both above ways. The effectiveness of the above ways was done with apply Net Present Value, which includes not only investments and Net Profit Margin, but also operating costs and Discount Rates. It has been shown that all of the above ways are effective. In particular, the least costly is the modernization of the heating control system, which has payback period is low three years. The payback period for second way to replace all 35–110 kV oil circuit breakers with modern ones at JSC «Chernigivoblenrego» is about 6.5 years, but this way requires large investments. However, this way cannot be done in one year. Therefore effectiveness will be less due to energy losses to operated oil circuit breakers.

Author(s):  
Fadel Mohammad Islam ◽  
Ahmad Danu Prasetyo

SKP is an integrated stock management system application. With SKP, PT Telkom Indonesia provides solutions to business owners in the form of connectivity and services. Proper planning of business strategy is needed based on a proper feasibility study, so SKP project can generate economic benefits for PT Telkom Indonesia and all the stakeholders. SKP has not calculated the financial projections for it to proceed to the market and meet PT Telkom Indonesia regulation. A financial feasibility study would measure the revenue projection, and cost structure such as cash flow, balance sheet, and income statement projection. At the end of this model, there will be a conclusion of the feasibility of the project using internal rate of return (IRR), net present value (NPV), and payback period (PP) as parameters. If the project is feasible, there will be a sensitivity risk analysis to find out the most sensitive variable. According to feasibility test result, it is concluded that the SKP project can benefit PT Telkom Indonesia. This can be seen from the FCFF calculation which results in a positive NPV with a value of Rp 5.229.648.128, and IRR of 67,26% which is greater than the project WACC of 17,94%. From the payback period requirements set by PT Telkom Indonesia, the project is estimated to have a PP of 2,02 years. The result of SKP's financial projections is also supported by Monte Carlo simulations which show the effect of changes to influential variables, with simulation results show a possible NPV> 0 of 87,53%.


2017 ◽  
Vol 13 (3) ◽  
pp. 240
Author(s):  
Novdin M Sianturi

Abstrak: Pengelolaan sampah di Kota Pematangsiantar masih bertumpu pada pendekatan akhir (kumpul-angkut-buang), dengan tingkat pelayanan yang rendah, sehingga untuk meningkatkan pelayanan sampah, perlu dilakukan pemilahan di tempat penampungan sementara (TPS). Penelitian ini bertujuan untuk mengkaji sistem pengelolaan sampah dengan melakukan pemilihan di TPS dapat meningkatkan pelayanan aset persampahan sampai tahun  2015 secara teknis operasional dan dari aspek keuangan. Analisa teknis operasional aset pengelolaan sampah mulai dari pewadahan, pengumpulan dan pengangkutan sedangkan analisa keuangan dan analisa kelayakan menggunakan Net Present Value, Internal Rate of Return, Benefit/Cost Ratio, dan Payback Period. Dari hasil analisa tersebut diperoleh suatu sistem pengelolaan sampah dengan pemilihan di TPS berdasarkan zona pelayanan dengan skala prioritas secara bertahap daritahun 2013-2017, dapat meningkatkan cakupan pelayanan sampah eksisting rata-rata 6,69 %, cakupan pelayanan TPS eksisting rata-rata 8,29 %, dan cakupan pelayanan truk pengangkut sampah eksisting rata-rata 12,03 %. Investasinya layak, diperoleh Net Cashflow pada tahun 2020 sebesar Rp 1.720.242.284,-, NPV suku bunga 15 % bernilai positif, IRR > MARR 15 %,  B/C Ratio > 1, dan PP 4,7 tahun, lebih pendek dari periode investasi 10 tahun. Dari Metode penelitian ini maka pengumpulan data, observasi lapangan dan pengukuran contoh timbulan sampah dengan sampel 4 TPS perumahan yang terlayani pengangkutan.


2018 ◽  
Vol 3 (2) ◽  
pp. 160
Author(s):  
Halkadri Fitra ◽  
Salma Taqwa ◽  
Charoline Cheisviyanny ◽  
Abel Tasman ◽  
Nurzi Sebrina

Penelitian ini bertujuan untuk melihat kelayakan aspek keuangan usaha grosir sembako Badan Usaha Milik Desa (Nagari) Kamang Hilia Sejahtera di Kenagarian Kamang Hilia Kecamatan Kamang Magek Kabupaten Agam Provinsi Sumatera Barat yang dilakukan pada tahun 2018. Penelitian bersifat deskriptif kuantitatif dengan menggunakan metode cash flow analysis, payback period, net present value, profitability index, internal rate of return, dan average rate of return. Hasil penelitian menunjukkan bahwa nilai net cash flow Badan Usaha Milik Desa (Nagari) Kamang Hilia Sejahtera adalah positif yaitu Rp.21.774.000, nilai payback period adalah 1,15 tahun, nilai net present value positif sebesar Rp.10.680.034,47, nilai profitability index adalah positif 1,37, sedangkan nilai internal rate of return adalah 46,7% dan nilai average rate of return adalah 57,23%. Berdasarkan standar penilaian maka semua metode yang digunakan memberikan kesimpulan bahwa usaha grosir sembako milik Badan Usaha Milik Desa (Nagari) Kamang Hilia Sejahtera dalam kategori layak untuk dilaksanakan.


1970 ◽  
Vol 3 (1) ◽  
Author(s):  
Fikri Fathurahman Aziz

This study aims to analyze financially (net present value, revenue cost ratio, internal rate of return, break event point, return on investment and payback period) feasibility of kampung super chicken farming Mr. Suparlan in Jojog village, district Pekalongan, East Lampung regency. The data used in the form of quantitative and qualitative data sourced from the primary data and secondary data which is then analyzed descriptively. Based on the analysis, it is known that kampung super farm is financially feasible to cultivate. This is indicated by the positive value of net present value (NPV) of Rp 186,568,517, revenue ratio (RCR) 1.59, internal rate of return (IRR) of 135.82%, return on investment (ROI) of 43%, and the value of payback period (PP) of 0.50. Keywords: financial feasibility, kampung chicken, chicken farm


2013 ◽  
Vol 336-338 ◽  
pp. 681-685
Author(s):  
Li Jun Zhao ◽  
Ying Feng Chen

This paper constructs a coal-conveying control system based on programmable logic controller (PLC), which is applied to the residual heat and pressure integrated energy-saving technological transformation projects, and realizes the performance of security, reliable and efficient operation. This control system consists of the PLC control system, computer control system and industrial television monitoring system. After more than one year of actual operation shows that the system structure is reasonable, reliable operation, at the same time, reduce labor intensity, improve the utilization rate of equipment, the stable operation also provides a practical reference for other similar projects.


2013 ◽  
Vol 850-851 ◽  
pp. 355-358
Author(s):  
Dong Du

This paper describes the use of Fluid Flow Simulation Software to model a passenger aircraft engine environmental control system. The analysis simulates the cooling pack and the engine distribution system in a single model.The engine environmental system is very important for engine working efficiently. Using AMEsim software to simulate the cooling system can make it easily and clearly. The influence of the heat component and the fan operating is studied also. Through the analysis of the cooling system, we know that with the help of fan, the system can get additional air in the radiator and make the temperature decrease consequently.


2019 ◽  
Vol 3 (2) ◽  
pp. 146
Author(s):  
Nur Rahmani ◽  
Akmal Lazuardy

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.


2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Yudiana Yudiana ◽  

Abstract The object of research is PO. Pisang Suseno Bandar Lampung Chips located at Jalan Ikan kakap No. 78 Teluk Betung. PO. The problem studied was to find out the influence of financial and marketing factors on business feasibility of PO. Suseno Banana Chips in Bandar Lampung because of the business feasibility of PO. Suseno Banana Chips in Bandar Lampung business feasibility PO. Suseno Banana Chips in Bandar Lampung are declining. The research method used in this study is library research carried out by reading and studying books, scientific works and other library support related to this research and field research conducted by examining directly on PO. Suseno chips in Bandar Lampung through interview methods and questionnaires related to financial and marketing factors to the business feasibility of Suseno Keripik in Bandar Lampung. The results showed that the influence of financial and marketing factors on business feasibility of PO. Suseno Chips in Bandar Lampung, Based on calculations and research results from several financial feasibility criteria, it can be seen that the Net Present Value (NPV) is 226,745,626 and the Profitability Index (PI) is 1.87, the Internal Rate of Return (IRR) is 40.47% and Payback period (PP) for 2 years 23 days. This business should be developed in the direction of a larger processing industry given the products of PO chips. Suseno is a product that is quite popular with the community and this business can be used as an example by various parties who want to pursue similar businesses.


Agrikultura ◽  
2018 ◽  
Vol 29 (3) ◽  
pp. 144
Author(s):  
Wahyu K Sugandi ◽  
Asep Yusuf

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


2019 ◽  
Vol 3 (1) ◽  
pp. 82-92
Author(s):  
Fatahurrazak Fatahurrazak

Penelitian ini bertujuan untuk melihak kelayakan bisnis pada Pembangunan Kompleks Industri Maritim (Sentra Industri) Pengolahan Rumput Laut di Kecamatan Moro, Kabupaten Karimun Provinsi Kepulauan Riau dimaksudkan untuk memacu pertumbuhan industri daerah dengan keterlibatan para pihak berkepentingan termasuk pengusaha industri kecil dan menengah sehingga memberikan manfaat bagi berbagai pihak. Penyusunan pola pengembangan sentra menggunakan konsepsi sebagaimana diatur dalam perundang-undangan diharapkan menghadirkan sentra dengan prinsip lingkungan bersih, industri hijau dengan memperhatikan sanitasi dan higienitas, keseimbangan dengan ruang terbuka dan efektivitas pemanfaatan ruang dan biaya. Metodologi dalam menghasilkan keluaran tersebut di atas dilakukan dengan mempelajari data primer dan data skunder yang didapat langsung dari lokasi dan pemerintah daerah Kabupaten Karimun. dokumen sekunder berupa RPJPD – RPJMD – RTRW Kabupaten Karimun, rencana strategi terkait pengembangan industri, infrastruktur, peran institusi maupun stakeholder terkait dalam pengembangan Sentra Industri pengolahan rumput laut, dan kebijakan ekonomi daerah yang relevan. Pengumpulan data dan informasi pula dilakukan dengan observasi langsung pada lokasi, wawancara, dan kuisioner. Alat analisis yang digunakan adalah Net Present Value dengan discount factor 15%, Net B/C, Internal Rate of Return, dan Payback Period. Dan hasilnya adalah NPV > 0, layak dilaksanakan, Net B/C > 1, layak dilaksanakan, IRR > discount factor 15%, layak dilaksanakan, dan Payback Period 4,18 tahun.


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