scholarly journals Techno-Economic Analysis of a Refractance Window Dryer Prototype Developed by Kenya Industrial Research and Development Institute

Author(s):  
Winstone Asugo Nyaguti ◽  
George Wafula Wanjala ◽  
Joseph Kamau ◽  
Samuel Warui

The Refractance window dryer (RWD) is a fourth generation dehydration technology. RWD is used to dry heat-sensitive materials because it retains high nutrient content, colour, flavour, aroma and bioactive compounds. The dehydrated products have a high sensory quality. There were no RWD in East Africa despite their excellent performance hence need for local fabrication of RWD Prototypes that can meet the technical, economical and socio-economical requirements. This paper describes the performance evaluation and economic analysis of the RWD prototype developed at the Kenya Industrial and Development Institute (KIRDI), Kenya. Indicators such as drying rate and drying time were used to assess its technical performance. The economic performance of the dryer was appraised using Net Present Value (NPV), Internal Rate of Return (IRR), Benefit-Cost Ratio (BCR), and Payback Period (PBP). Mango pulp and African leafy vegetables were dried using the RWD prototype at KIRDI between May-July, 2021. During drying process, moisture content of mango pulp was reduced from 88% to 15% in one hour while African leafy vegetable from 88% to 5% in 40 minutes. The economic evaluation of the dryer revealed an IRR of 31%, NPV of 808223.515 @ 24% and PBP of 3.6 years. KIRDI RWD prototype is a versatile technology that can be deployed in remote settings resulting to reduction of post-harvest losses as well as carbon emission. Currently, sun drying, solar drying, cabinet drying, spray drying, drum drying, fluidized bed drying and freeze drying are available in Kenya. They possess various advantages and equally significant drawbacks. Therefore the adoption of KIRDI’s Refractance window dryer would be beneficial to Micro Small and Medium enterprises in providing timely drying services and improve their socio-economic status.

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1297
Author(s):  
Juntae Kim ◽  
Hyo-Dong Han ◽  
Wang Yeol Lee ◽  
Collins Wakholi ◽  
Jayoung Lee ◽  
...  

Currently, the pork industry is incorporating in-line automation with the aim of increasing the slaughtered pork carcass throughput while monitoring quality and safety. In Korea, 21 parameters (such as back-fat thickness and carcass weight) are used for quality grading of pork carcasses. Recently, the VCS2000 system—an automatic meat yield grading machine system—was introduced to enhance grading efficiency and therefore increase pork carcass production. The VCS2000 system is able to predict pork carcass yield based on image analysis. This study also conducted an economic analysis of the system using a cost—benefit analysis. The subsection items of the cost-benefit analysis considered were net present value (NPV), internal rate of return (IRR), and benefit/cost ratio (BC ratio), and each method was verified through sensitivity analysis. For our analysis, the benefits were grouped into three categories: the benefits of reducing labor costs, the benefits of improving meat yield production, and the benefits of reducing pig feed consumption through optimization. The cost-benefit analysis of the system resulted in an NPV of approximately 615.6 million Korean won, an IRR of 13.52%, and a B/C ratio of 1.65.


1995 ◽  
Vol 6 (1) ◽  
pp. 105-124 ◽  
Author(s):  
Stephen Holland ◽  
Jean Cross

This paper examines the application of the techniques of economic analysis to occupational health and safety regulations using occupational noise as an example. The paper explores the extent to which economic impact studies are practically feasible and useful in relation to occupational health and safety legislation. Six studies of the same regulatory change, from four countries were analysed. The results of these studies ranged from a strongly negative to a significantly positive net present value, depending on the assumptions made. The factor which had the greatest influence on these differences was the way in which benefits are costed. It is shown that in the field of Occupational Health and Safety, economic analysis does not produce a single valid net present value or benefit to cost ratio on which a decision to legislate can sensibly be based. However the analysis can, if properly directed provide useful information on factors which will enable organisations to optimise their response to the regulation and authorities to introduce regulations in a way which does not bear with unreasonable weight on specific sectors of the community.


In Bangladesh, traditional technologies like Dole, Auri, Bamboo Gola, Motka, and Plastic bag are widely used in rice storage. Hot and humid weather of the country favors the growth of insects in these which are not functional for rice storage. Recently, hermetic bag (HB) GrainPro and PICS bags are suggested for rice storage without being subjected to economic analysis in the country. Very few empirical studies on the economic analysis of storage technologies were conducted at laboratory and field conditions. In it, losses of rice storage using traditional technologies and HB were evaluated to judge the economic effects of these. Moreover, determinants of storage benefit were analyzed for different devices and econometric modeling was formulated to have the understanding the benefit of reduced loss by storage over time. These benefits were found to increase with time meaning that a farmer gained more benefit by storing longer period in HB. Results showed that economically feasible and attractive in investing these technologies at a discount rate of 12 percent by using financial analytical tools like net present value (NPV) and benefit-cost ratio (BCR) of different storage technologies. The results also indicate that gain of storage clearly increased over time. Considering BCR, Plastic drum use in rice storage is the most profitable storage technology followed by GrainPro and PICS Bag for consumption. Regression analysis of treatment and time effect of storage indicated that percentage profit per month is found the highest in GrainPro bag followed by PICS bag, Dole, Plastic bag and Motka, respectively. Promotion of PICS and GrainPro bags in rice seed storage would be more cost-effective and economically feasible to farmers.


Animals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 7
Author(s):  
Collins Wakholi ◽  
Shona Nabwire ◽  
Juntae Kim ◽  
Jeong Hwan Bae ◽  
Moon Sung Kim ◽  
...  

To minimize production costs, reduce mistakes, and improve consistency, modern-day slaughterhouses have turned to automated technologies for operations such as cutting, deboning, etc. One of the most vital operations in the slaughterhouse is carcass grading, usually performed manually by grading staff, which creates a bottleneck in terms of production speed and consistency. To speed up the carcass grading process, we developed an online system that uses image analysis and statistical tools to estimate up to 23 key yield parameters. A thorough economic analysis is required to aid slaughterhouses in making informed decisions about the risks and benefits of investing in the system. We therefore conducted an economic analysis of the system using a cost-benefit analysis (the methods considered were net present value (NPV), internal rate of return (IRR), and benefit/cost ratio (BCR)) and sensitivity analysis. The benefits considered for analysis include labor cost reduction and gross margin improvement arising from optimizing breeding practices with the use of the data obtained from the system. The cost-benefit analysis of the system resulted in an NPV of approximately 310.9 million Korean Won (KRW), a BCR of 1.72, and an IRR of 22.28%, which means the benefits outweigh the costs in the long term.


2019 ◽  
Vol 4 (3) ◽  
pp. 208-211
Author(s):  
Dewa Ketut Sudarsana

At present the economic development in the province of Bali between South and North Bali is very significant. This condition is presumed to be the transportation infrastructure for the connecting road of South Bali - the existing aiIDRort is not optimal. The alternative transportation infrastructure studied is the plan to build a railway line across South-North Bali. Mengwitani-Singaraja link road is required to be capable to provide more optimal accessibility so that there is an even distribution of economic growth.he indicators used in the feasibility analysis of economic aspects are net present value (NPV), benefit cost ratio (BCR) and economic internal rate of ruturn (EIRR) The price component is used by the shadowprice method. Costs calculated according to the life cycle cost of the project development. Benefits calculated include direct benefits in the form of passenger ticket income and indirect costs in the form of cost savings for existing road users, a multiplier effect, an increase in tourist visits to northern Bali. Economic analysis indicates that the planned North-North Bali railway line is worth proceeding, this is shown by the NPV indicator of IDR 860 billion, BCR of 1.11 and EIRR of 13.11% greater than the 12% price reduction rate. Although it shows that there is feasibility of economic studies, a strategy is needed to produce financial feasibility so that it can be offered in cooperation between government and business entities (PPP) in order to accelerate its developmen


2021 ◽  
Author(s):  
Mohamad Ali Fulazzaky ◽  
Achmad Syafiuddin ◽  
Martin Roestamy ◽  
Zulkifli Yusop ◽  
Jonbi Jonbi ◽  
...  

Abstract The problem of water shortages faced by many countries including the country that having sufficient water source needs to be provided a practical engineering solution. The reliability analysis of rainwater harvesting system (RWHS) installed at the commercial building of AEON Taman Universiti located in Johor Barhu city of Malaysia was based on the rainfall pattern, rainwater use and rainwater storage tank. The economic analysis using the net present value (NPV), return on investment (ROI) and benefit-cost ratio (BCR) was performed to assess the optimal management of RWHS installed during the period of construction and retrofitted after the operation of commercial building. The results showed that the balance of water supply and demand is reliable to implement the RWHS and the optimal management of 1000-m3 RWHS tank installed during the construction could be more promising than that retrofitted after the operation of AEON Taman Universiti commercial building. The operation of RWHS installed during the construction of building is obviously more feasible due to the values of NPV, ROI and BCR tend to be high. The reliability and economic analysis of RWHS installed during construction and that retrofitted after operation of commercial building demonstrated the benefit of RWHS installation will contribute to the future of building design for achieving an effective water management.


Author(s):  
Pricila Araújo Santana ◽  
Daniela de Carvalho Lopes ◽  
Antonio José Steidle Neto

The main objective of this study was to simulate the economic feasibility of low-temperature grain drying systems considering Brazilian conditions and using three drying capacities, seven grain types and two furnace fuels. For this, 42 scenarios were simulated and compared among themselves by using an economic analysis based on the cash flow model with project lifetime of 20 years. The indices net present value, payback period, benefit-cost ratio and internal rate of return were applied during the analyses. Simulations showed that drying of coffee and beans in large systems presented higher economic feasibility, regardless of the furnace fuel used. All simulated scenarios were cost-effective provided that at least two drying cycles are performed per year. Labor costs, social taxes, grain type and drying capacity most affected the profitability of this kind of investment, while the furnace fuel less influenced the evaluated economic indices.


2017 ◽  
Vol 5 (2) ◽  
pp. 440-451
Author(s):  
Wahyu Kristian Sugandi ◽  
M. Ade Moetangad Kramadibrata ◽  
Asri Widyasanti ◽  
Andhini Rosyana Putri

The vacuum-pneumatic type of the modified shallot skin sheller (MPB TEP-0315) has to be specified its technical and economical feasibility. An explanatory descriptive analysis has been employed to observe, measure, and re-account the details. Results from performance test showed that its theoretical and actual capacities were 52.48 kg/h and 31.24 kg/h, respectively at a machine efficiency of 59.60 percent at a required power (for compressor and decompressor) of 2092.6 W and at a shelling yield of 70.20 percent. The average level of noissiness was 69.25 dBA. Whilst the average machine vibration with or without load were 0.67 mm/s and 1.67 mm/s, respectively. Based on economic analysis this shelling business would be reasonable at a net present value (NPV) of Rp 30.618.320,- at an internal rate of return (IRR) of 68.83%, where the benefit cost ratio (BCR) would be 1.20. While the pay back period (PBP) would be reached in the 2nd year of investation.   Keywords: economic analysis, shelling machine, performance test   ABSTRAK   Mesin pengupas kulit bawang Tipe Vakum-Pneumatik (MPB TEP-0315) hasil modifikasi perlu dideskripsikan spesifikasi dan kelayakan ekonominya. Metode analisis deskriptif eksplanatori digunakan untuk mengamati mengukur, dan menghitung kinerja mesin serta kinerja ekonomi. Hasil uji kinerja menunjukkan bahwa kapasitas teoritis dan aktual mesin berturut-turut adalah 14,57 g/detik, dan 8,67 g/detik dengan efisiensi mesin 59,60%, dan pada kebutuhan daya (untuk kompresor dan dekompresor) 2092,6 W rendemen pengupasan 70,20%. Tingkat kebisingan mesin rata-rata 69,25 dBA. Sementara getaran mesin rata-rata dengan dan tanpa beban beruturut-turut adalah 0,67 mm/s dan 1,67 mm/s. Berdasarkan analisis ekonomi usaha pengupasan bawang merah memenuhi syarat pada nilai bersih sekarang (net present value, NPV) Rp 30.618.320,- , laju pengembalian modal (internal rate of return, IRR)  68,83%, rasio laba-biaya (benefit cost ratio, BCR) 1,20. Sedangkan periode pengembalian modal (pay back period, PBP) investasi tercapai pada tahun ke-2.   Kata kunci: analisis ekonomi, mesin pengupas, uji kinerja


2019 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
Guilherme Casassola Bortolotto ◽  
Romano Timofeiczyk Junior ◽  
David Buratto ◽  
Gustavo Silva Oliveira

This study aimed to analyze economically the forest promotion, forest-saving program installed in the southern half of Rio do Grande do Sul State, Brazil, as an income alternative and potential supplier of raw material in the forest production segment. Cost data were calculated for the total of 269 projects per hectare and divided into Inputs and Services. The revenues were derived from the sale of standing timber at the end of the forest production cycle, not including harvesting costs. For economic analysis, criteria from Net Present Value (NPV), Benefit Cost Ratio (B/C), Internal Rate of Return (IRR), and Equivalent Annual Value (EAV) were used. The interest rate used was 7.0% per year according to the promotion program. The project presents at seven years a NPV of $542.90 and an IRR of 16.0%, showing to be feasible and attractive. The costs and revenues from the year seven planting were analyzed and with addenda at years 8, 9, and 10, demonstrated that greater project profitability gains are achieved between years 8 and 9 with an increase of $463.18 in relation to year 8. This represents a profitability of 49.0% which had an increase of $229.61 when compared to year 7. The sensitivity analysis demonstrated the inverse relationship trend that exists between the NPV and the interest rate. The project’s return capacity from the seventh year is precisely referenced by the freezing of the debt, which did not accrue an interest rate adjustment, as well as the price per cubic meter of timber, which remains readjusting as zero bases.


2019 ◽  
Vol 2 (1) ◽  
pp. 53-62
Author(s):  
Mahliza Nasution ◽  
Dedi Rahmad ◽  
Rusyanto Rusyanto

Serdang Bedagai is one of the rice granaries in North Sumatera Province, but its agricultural potential has not been well managed due to lack of water for irrigation, especially in the dry season.With bajayu weir construction, is expected to improve water demand forclean water and irrigation for agricultural processes can be developed and managed bygood.The cost of construction of the dam construction is very large, so it needs to be reviewed if the benefits and income generated are proportional to the costs and losses incurred.The final goal of this research is to conduct financial and economic analysis in the construction of bajayu weir.This study uses financial and economic analysis using Net Present Value (NPV), Internal Rate of Return (IRR), Benefit cost Ratio (BCR) indicators and also analyzes sensitivity due to cost changes.Optimal handling is estimated after 10 years, so within that time the benefit increases linearly until the 13th year and will remain from year 13 to the next.From the calculation of finance development of bajau irrigation area obtained NPV = Rp.1.778.603.070.507,62-, IRR = 27%, BCR = 4.6.And from the economic calculation of the area of irrigation bajayu obtained NPV = Rp.1.235.038.404.979,95-, IRR = 32% BCR = 6.92.And calculation of sensitivity analysis has also been done to change of cost and benefit equal to ± 5% and ± 10% for financial and economic analysis indicate that project plan still very feasible.


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