scholarly journals Design of Cilembu Sweet Potato Cleaning Machine

2019 ◽  
Vol 9 (2) ◽  
pp. 5054-5058
Keyword(s):  
Sweet Potato ◽  
Performance Test ◽  
Production Capacity ◽  
Engine Performance ◽  
Performance Testing ◽  
Potato Production ◽  
Angle Of Repose ◽  
Sweet Potatoes ◽  
Local Product ◽  
Cleaning Machine

Sweet potato is a food local product that it is very popular in domestic and foreign consumers. This is because the unique sweetness taste when consumed directly by the consumers. Cilembu Village, in Sumedang is a center of sweet potato production which has been exported to Malaysia, Japan, Korea and Singapore with a production capacity of 10 ton.ha-1 . Unfortunateyl, sweet potatoes cleaning process is still low, with about 50 kg.day-1 - 70 kg.day-1 because of it’s manually and conventional processed. In order to increase the cleaning capacity, it was neccesary to do the the research of sweet potato cleaning machine technology . The aim of this study was to design a prototype of sweet potato cleaning machine with a capacity of 100 kg.hr-1 . The method conducted in this research was engineering design with observation of research, characteristics with sweet potato, design criteria, functional and structural design, figure design, technical analysis, mechanism process, functional machine and performance test. The measurement results of sweet potato showed that the bulk density, angle of repose, roundness are 562.52 kg.m -3 , 70.500 , 0.1. The clening machine prototype was produced with dimension of 400 mm (length) x 490 mm (height) x 400 mm (width) with a power source generator using 1 HP electric motor. The resulted of sweet potato cleaning machine functional test showed that actual capacity was 103 kg.hr-1 . In general, the results of engine performance testing can be concluded that the machine can function properly, which can clean sweet potatoes from soil dirt

scholarly journals Food Security and Income through Sweet Potato Production in Teso, Uganda

2017 ◽  
Vol 7 (1) ◽  
pp. 146
Author(s):  
William Faustine Epeju ◽  
Peter Milton Rukundo
Keyword(s):  
Food Security ◽  
Sweet Potato ◽  
Quantitative Methods ◽  
Potato Production ◽  
Grain Legumes ◽  
Agricultural System ◽  
Sweet Potatoes ◽  
Sustainable Food ◽  
Qualitative And Quantitative Methods ◽  
Adequate Food

Two relevant studies on food security are referred to in the article. Food insecurity from time to time threatens in Teso sub region which houses a viable Teso agricultural system. One study was done during 2001-2003 in Teso on sweet potato production with 650 persons participating and the second one was done in one disaster affected area of Bududa District nearby during 2012-2016 when 1,142 persons participated. Kiryandongo District where Bududa landslide survivors were resettled in Uganda was included in that study. Participatory methods such as focus group discussions, farm observations, in-depth interviews, and questionnaires were used. Both studies used qualitative and quantitative methods for data analysis. The sweet potato stands second after cassava as the crop for famine and disaster periods in Teso to meet the human right to adequate food to complement the well dried cereals & grain legumes that stored longer. Livestock especially was also one of the prime determinants of food security and income in Teso. Free from cyanides with a good content of affordable Vitamin A from orange fleshed varieties, sweet potatoes in Teso contributed about 61% to the yearly food per capita of the population thus a recommendable crop for sustainable food security and some income in Teso and beyond. 

scholarly journals Rotary Electrical Controlled Drum Dryer for Organic Fertilizer Production

2019 ◽  
Vol 3 (2) ◽  
pp. 320-327
Author(s):  
Naswir Naswir ◽  
Elvin Hasman ◽  
A Irwan
Keyword(s):  
Performance Test ◽  
Heating Temperature ◽  
Organic Fertilizer ◽  
Production Capacity ◽  
Engine Performance ◽  
Heat Energy ◽  
Operational Cost ◽  
Heating Unit ◽  
Drying Cylinder ◽  
Main Components

this research is aim to provide design and prototype of rotary electrical controled drumdrier machine for drying organic fertilizer to increased production capacity and quality by using a source of heat energy from electricity. This machine consists of five main components i.e. drying cylinder, heating unit, support frame, engine and transmission system. Engine specifications are high 130 cm, 720 cm long, and 120 cm wide, cylinder diameter 60 cm, power engine 14 hp, and heating temperature 142 oC. engine performance test are: capasity 805,03 kg/hours, drying rate 27,40 %/hours, noise level 81,54 db. cost analysis result are operational cost 155,06 Rp/kg and Break Event Point 159.219,73 kg/years

scholarly journals Modification and Performance Test of Prototype I Washer Machine

2021 ◽  
Vol 9 (8) ◽  
pp. 1086-1090
Keyword(s):  
Sweet Potato ◽  
Performance Test ◽  
Engine Performance ◽  
Design Activity ◽  
Performance Tests ◽  
Engine Vibration ◽  
Routine Design ◽  
New Construction ◽  
And Performance ◽  
Power Needs

The sweet potato (Ipomoea batatara L.) is one of the world’s important tubers with a production of more than 133 million ton. In 2019, the Laboratory of Agricultural Equipment and Machinery designed a Prototype I Washer The machine is not optimal, reaching 67.13%, and it needs to be modified because the skin of the sweet potato is cleaned and exfoliated so that it can reduce the quality of the sweet potato. The method used in this research is engineering, which is a non-routine design activity with new construction of process and product. Base on Matlab program, the result of the modification research and performance tests, is by using the prototipe I washer, the percentage of the level of cleanliness was 80.02%. Where with an increase 67.13% using the performance machine. Based on the evaluation of technical feasibility and engine performance tests, it is found that the propulsion power needs 1 HP and the deflection of the frame is only 13.06 mm. The theoretical capacity of the engine is 231.68 kg.hour-1, the actual capacity is 100 kg.hour-1 with an efficiency of 44.39%, the noise level of 77 dB and the engine vibration of 13.43 m.s-1.

scholarly journals ANALISIS KINERJA DAN KELAYAKAN FINANSIAL MESIN PENGUPAS KENTANG TIPE SILINDER ABRASIVE (Performance and Financial Feasibility of Potato Peeler Abrasive Cylinder Type)

2018 ◽  
Vol 6 (1) ◽  
pp. 1-11
Author(s):  
Ahmad Thoriq ◽  
Rizky Mulya Sampurno ◽  
Sarifah Nurjanah
Keyword(s):  
Sweet Potato ◽  
Market Price ◽  
Production Capacity ◽  
Performance Testing ◽  
Effective Capacity ◽  
Machine Performance ◽  
Financial Feasibility ◽  
The Cost ◽  
Stripping Efficiency ◽  
Two Machines

In producing potato chips mechanically there are two machines that play an important role, i.e. peeler and slicer potato. As a basis in production planning, it is necessary to test the performance of the machines of both units of the machine. The performance of potato slicing machine has been done in the previous research with the slicing capacity reaching 71.160 kg/hour. This study aims to test the performance and financial feasibility of potato peelers. Performance testing of potato peeler begins with the preparation of sweet potato, sorting the shape and size, and weighing. Some parameters measured during the test process consist of: power, effective capacity, weight loss, potato cleanliness, and stripping efficiency. Some of the parameters calculated on the financial feasibility analysis include: HPP, NPV, BCR, PBP and IRR. The result showed that peeling capacity was 396,73 watt, with peeling machine capacity 90.33 kg/hour, stripping efficiency 88.32%, for 2 minute stripping happened weight reduction 11.68% from initial weight 3.06 kg, with a cleanliness level that reaches 100% for potatoes round and 90% for ovalshaped potatoes. In the production capacity of potato peeled 6382,36 kg/month, the cost of production achieved Rp 12,149/kg. When peeled potatoes are sold at market price of Rp 18,000/kg, we get NPV of Rp 1,538,996,547/year, BCR of 1.42, IRR of 33.48% and capital returns in the sixth month. Keywords: machine performance, financial feasibility, peeled potato, potato peeler, sweet potato   ABSTRAK Terdapat dua mesin yang berperan penting pada produksi keripik kentang secara mekanis yaitu mesin pengupas dan mesin pengiris kentang. Sebagai dasar dalam perencanaan produksi, perlu dilakukan uji kinerja mesin kedua unit mesin tersebut.  Kinerja mesin pengiris kentang telah dilakukan pada penelitian sebelumnya dengan kapasitas pengirisan yang mencapai  71,160 kg/jam. Penelitian ini bertujuan melakukan uji kinerja dan kelayakan finansial mesin pengupas kentang. Pengujian kinerja mesin pengupas kentang dimulai dengan penyiapan ubi kentang, sortasi berdasarkan bentuk dan ukuran, dan penimbangan. Beberapa parameter yang diukur selama proses pengujian terdiri atas : daya, kapasitas efektif, kehilangan bobot, tingkat kebersihan kentang, dan efesiensi pengupasan.  Beberapa parameter yang dihitung pada analisis kelayakan finansial antara lain : HPP, NPV, BCR, PBP dan IRR. Hasil penelitian menunjukkan besarnya daya pengupasan sebesar 396,73 watt, dengan kapasitas mesin pengupas sebesar 90,33 kg/jam, efesiensi pengupasan 88,32%, selama 2 menit pengupasan terjadi pengurangan bobot sebesar 11,68 % dari berat awal 3,06 kg, dengan tingkat kebersihan yang mencapai 100% untuk kentang berbentuk bulat dan 90% untuk kentang berbentuk lonjong. Pada kapasitas produksi kentang kupas 6382,36 kg/bulan, harga pokok produksi sebesar Rp. 12.149 /kg.  Bila kentang kupas dijual dengan harga pasar Rp.18.000/kg maka didapatkan NPV sebesar Rp.1.538.996.547/tahun, BCR sebesar 1,42, IRR sebesar 33,48% dan modal akan kembali pada bulan keenam.  Kata kunci: kinerja mesin, kelayakan finansial, kentang kupas, mesin pengupas, ubi kentang  

scholarly journals Value chain of sweet potato: a sociological analysis

2021 ◽  
Vol 892 (1) ◽  
pp. 012031
Author(s):  
C Cerio
Keyword(s):  
Sweet Potato ◽  
Value Chain ◽  
Role Theory ◽  
Participant Observation ◽  
Well Being ◽  
Potato Production ◽  
The Philippines ◽  
Sweet Potatoes ◽  
General Production ◽  
Exchange Network

Abstract This study analyzes the existing value chain of sweet potatoes in the Partido District of Camarines Sur, the Philippines. A combination of surveys and participant observation was utilized in the study. Four sociological perspectives were used in the interpretation and analysis of the data, such as new economic sociology, symbolic interactionism, role theory, and exchange network theory. Six components of the value chain were evaluated, such as (a) agents, roles, and links; (b) inputs, outputs and activities that generate transformation; (c) value addition and value allocation; (d) final products or a group of final products; (e) power relations and governance mechanisms; and (f) problems and opportunities shared by all agents. The study found four major links involving five actors – farmers/producers, middlemen or wholesalers, retailers, processors, and end consumers. Analysis of the sweet potato value chain shows that sweet potato production has great potential to improve the well-being of participants. Sweet potato production gave farmers an 81% net profit margin and contributed to 39% of their livelihood. However, there remain general production and utilization challenges and post-harvest and by-product processing issues. The study established the significance of embeddedness and the wider social structure for the sweet potato agribusiness and provided policy inputs for the development of the sweet potato value chain in the district.

Sweet potato production in a short-season area utilizing black plastic mulch: effects of cultivar, in-row plant spacing, and harvest date on yield parameters

2016 ◽  
Vol 96 (1) ◽  
pp. 139-147
Author(s):  
David Wees ◽  
Philippe Seguin ◽  
Josée Boisclair
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Potato Production ◽  
Harvest Date ◽  
Root Weight ◽  
Base Temperature ◽  
Plant Spacing ◽  
Plastic Mulch ◽  
Sweet Potatoes ◽  
Black Plastic

The sweet potato (Ipomoea batatas (L.) Lam.) requires a long, hot growing season to attain good yields. In a cool climate, the use of black plastic mulch to heat the soil can improve growth but cultivars, plant spacing, and harvest date must be carefully selected to optimize yields and to attain market quality standards. In this two-year study in Quebec, Canada, two sweet potato cultivars (‘Georgia Jet’ and ‘Beauregard’) were grown at four in-row spacings (15, 30, 45, and 60 cm) and harvested at three dates (mid September, late September, and early October). Cumulative growing degree-days (GDD) with base temperatures of 10°C and 15.5°C were calculated for each harvest date. ‘Georgia Jet’ had higher total and marketable yields than ‘Beauregard’. In-row spacing had no effect on yields per hectare of ‘Beauregard’ and only affected ‘Georgia Jet’ in one year of the study. Average root weight of sweet potatoes, yields per plant, and number of roots per plant increased with wider spacing. Delaying harvest by one or two weeks had little effect on ‘Beauregard’ but increased yields of ‘Georgia Jet’. GDD may be a useful predictor of optimum harvest date but a lower base temperature used to calculate GDD may be desirable with ‘Georgia Jet’ as its yields continued to increase even when growing under cool conditions of late September and early October.

scholarly journals Uji Kinerja Mesin Pencacah Plastik (Studi Kasus Bank Sampah Tasikmalaya (BST) di Kecamatan Singaparna, Kabupaten Tasikmalaya)

2018 ◽  
Vol 7 (3) ◽  
pp. 151
Author(s):  
Wahyu Kristian Sugandi ◽  
Asep Yusuf ◽  
Totok Herwanto ◽  
Sidik Maulana
Keyword(s):  
Noise Level ◽  
Performance Test ◽  
Descriptive Analysis ◽  
Engine Performance ◽  
Performance Testing ◽  
Plastic Waste ◽  
Engine Vibration ◽  
Inorganic Substances ◽  
Testing Data ◽  
The City

ABSTRACTGarbage is solid waste, consisting of organic and inorganic substances or materials that are considered to have no longer beneficial and must be managed properly so as not to endanger the environment. Garbage has been a complicated problem especially in big cities. Singaparna, Tasikmalaya  has been produced 154.72 m3 of plastic waste every day. Plastic waste collected by BST is only sort and sold at low prices to the city. To increase the sale value, the plastic waste needs to be chopped in advance. Therefore, the Laboratory of Agricultural Equipment and Machinery FTIP Unpad had developed a plastic waste counting machine to be applied to the community, especially in BST to produce the desired plastic count. However, this machine not yet performance testing data, so it needs to do research regarding performance tests. The purpose of this study is to examine the performance of the plastic counter machine which includes measuring the capacity of the machine, calculating the rendering yield, calculating the length of the enumeration measuring the engine noise level and measuring the engine vibration level. The research method used had descriptive analysis method, it was measuring and calculating the structural components and engine performance. The results of the study in measuring the performance test showed that the actual capacity of the machine was 19.18 kg / hour, the enumeration chopper was 84%, the percentage of plastic chopping length was 86.89%, the noise level was 104.77dB, and the engine vibration was 18.3 mm / s. Key Note : plastic chopper, performance test, tasikmalaya garbage bank

scholarly journals Penerapan Model Geographically Weighted Regression(GWR) Pada Produksi Ubi Jalar

2018 ◽  
Vol 1 (1) ◽  
pp. 52
Author(s):  
Yuliana Susanti
Keyword(s):  
Regression Model ◽  
Sweet Potato ◽  
Geographically Weighted Regression ◽  
Potato Production ◽  
Weighted Regression ◽  
Soil Conditions ◽  
Sweet Potatoes ◽  
Irian Jaya ◽  
Geographically Weighted Regression Model ◽  
Gwr Model

Sweet potatoes are a major source of carbohydrate, after rice, corn, and cassava. Sweet potato is consumed as an additional or side meal, except in Irian Jaya and Maluku, sweet potato is used as staple food. The main problem faced in increasing sweet potato production is still relies on certain areas, namely Java Island, as the main producer of sweet potato. Differences in production is what often causes the needs of sweet potato in various regions can not be fulfilled and there is a difference price of sweet potato. To fulfill the needs of sweet potato in Java, mapping areas of sweet potato production need to be made so that areas with potential for producing sweet potato can be developed while areas with insufficient quantities of sweet potato production may be given special attention. Due to differences in production in some areas of Java which depend on soil conditions, altitude, rainfall and temperatures, a model of sweet potato production will be developed using the GWR model. Based on the Geographically weighted regression model for each regencies / cities in Java Island, it can be concluded that the largest sweet potato production coming from Kuningan with R2 equal 99.86%.<br />Keywords : Geographically weighted regression, model, sweet potato

scholarly journals Site Performance Testing of CW251B10 Gas Turbines

1989 ◽  
Author(s):  
Ihor S. Diakunchak ◽  
David R. Nevin
Keyword(s):  
Gas Turbines ◽  
Performance Test ◽  
Test Procedure ◽  
Engine Performance ◽  
Performance Testing ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Test Results ◽  
Analysis Method ◽  
Industrial Gas Turbine

The site performance testing of CW251B10 industrial gas turbine engines is described in this paper. A brief description is provided of the test procedure, the special instrumentation used during the test, and the derivation of the test tolerances. The test data analysis method and the associated correction curves and tables are described in some detail. Typical engine site performance test results are presented and compared to the original predicted engine performance.

Promoting Performance Test Capabilities Using Gas Path Analysis: A Case Study

2009 ◽  
Author(s):  
Vahid Noei Aghaei ◽  
Hiwa Khaledi ◽  
Mohsen Reza Soltani
Keyword(s):  
Path Analysis ◽  
Gas Turbine ◽  
Test Data ◽  
Performance Test ◽  
Engine Performance ◽  
Performance Testing ◽  
Health State ◽  
Component Level ◽  
Engine Operation ◽  
Expected Values

Performance testing of gas turbine packages is becoming increasingly common to assure that the turbine output power and efficiency meet the expected values during the turbine life cycle. In the conventional Performance Test Analysis (PTA), field measurements and calculations are carried out on the basis of standard codes to find the whole engine performance parameters (i.e. power and efficiency) at test conditions and to compare them with the expected values. Recently, regarding the development of Gas Path Analysis (GPA) and diagnostic techniques to investigate the gas turbine health state, performance test capabilities can be improved by using these analyses to perform further examination on the measured test data and to determine the deviation of gas turbine component health parameters from the “new and clean” health state during the engine operation. Determining the mentioned deviations, potentials of engine improvement in the component level can be obtained and subsequently the action-oriented recommendations are reported as guidelines in the overhaul. Also in the case of performance test after the overhaul, the main result of the GPA application in PTA is the verification of the overhaul effectiveness. Using the GPA in the cases studied in this paper indicates that heath state of engine components can be investigated from the performance test data and as the main result, it is show that applying the GPA, it is possible to distinguish the effect of non-recoverable degradation and that of the poor overhaul on the engine performance and finally to assess technically the effectiveness of overhaul.

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