scholarly journals Rancang Bangun dan Uji Kinerja Mesin Pembersihan dan Pengayakan Tipe-Grizzly Untuk Beras

2021 ◽  
Vol 14 (2) ◽  
pp. 65-75
Author(s):  
Aprilia Dila Wardiningrum ◽  
Agus Dharmawan ◽  
Soni Sisbudi Harsono ◽  
Siswoyo Soekarno
Keyword(s):  
Performance Test ◽  
Performance Testing ◽  
Work Capacity ◽  
Airflow Rate ◽  
Optimal Separation ◽  
And Performance ◽  
Main Components ◽  
Data Collections ◽  
Rotational Slip ◽  
Machine Work

Abstrak. Penelitian ini bertujuan untuk mengembangkan mesin pembersih dan pengayak tipe grizzly untuk beras sekaligus menguji kinerja mesin. Penelitian terdiri atas perancangan, perakitan, dan evaluasi kinerja mesin. Mesin yang dikembangkan memiliki 6 (enam) komponen utama, yaitu sumber dan transmisi tenaga putar, lubang pemasukan, unit pembersih beras, unit pengayak beras, lubang pengeluaran, dan kerangka mesin. Penelitian dilakukan menggunakan 3 (tiga) percobaan putaran, L (lambat), S (sedang), dan C (cepat) untuk mendapatkan data dari parameter pengukuran seperti kapasitas kerja, kecepatan putar mesin, laju isapan udara pada unit pembersih, slip putaran puli, dan persentase kehilangan bahan. Pada percobaan putaran L-S-C, yaitu 1654, 1817, dan 1979 rpm, menghasilkan laju isapan udara adalah 7,04, 7,79, dan 8,50 m/s. Slip putaran puli terjadi pada pulli 4 dengan nilai 3,27% tanpa sampal dan 1,70% dengan sampel; puli ini bertugas untuk menggetarkan ayakan grizzly 10-mesh. Kapasitas kerja pada 3 percobaan putaran (L-S-C) berturut-turut adalah 78,5, 81,6 dan 146,7 kg/jam. Pemisahan optimal dedak terjadi para percobaan putaran C sendangkan pemisahan menir terjadi pada percobaan L. Persentase kehilangan bahan tertinggi terjadi selama terjadi penurunan kecepatan putar yang mengakibatkan penurunan efektivitas kerja mesin.Design and Performance Test of Cleaning and Gryzzly-Type Sieving Machine for Rice Abstract. This research aimed to develop and a rice cleaning and grizzly-type sieving machine which also evaluates its performance. It consisted of designing, assembling, and performance evaluating of the machine. The desired machine was developed in six main components, i.e., power source, hopper, rice cleaner, rice siever, outlets, and machine frame. The research used three rotational speed treatments (Slow-Middle-Fast or L-S-C rotations) for data collections, whereas the parameters of performance testing consisted of work capacity, engine rotation speed, airflow rate, pulley rotational slip, and grain loss percentage. Engine rotation speeds at L-S-C treatments are 1654, 1817, and 1979 rpm and resulted in 7.04, 7.79, and 8.50 m/s, respectively, for airflow rates produced by the suction from a blower. The most significant rotational slip is occurred at Pulley-4 resulted in 3.27% (operating without samples) and 1.70% (operating with samples); this pulley transmitted rotational power to vibrate the 10-mesh grizzly sieve. The work capacities at L-S-C rotational treatments were 78.5, 81.6, and 146.7 kg/h, respectively. The optimal separation of brans was at C-rotational treatment, while the optimal separation of groats was at L-rotational treatment. The high percentage of grain loss occurred along with a reduction in speed that made the machine work ineffectively.

scholarly journals Analisis Teknik dan Uji Kinerja Mesin Peniris Minyak (Spinner) (Technical Analysis and Test Performance of Oil Spinner Machine)

2018 ◽  
Vol 6 (1) ◽  
pp. 17-26
Author(s):  
Wahyu K Sugandi ◽  
Ade Moetangad Kramadibrata ◽  
Fetriyuna Fetriyuna ◽  
Yoga Prabowo
Keyword(s):  
Test Performance ◽  
Pilot Plant ◽  
Performance Test ◽  
Design Method ◽  
Technical Specification ◽  
Engine Performance ◽  
Technical Analysis ◽  
Bearing Life ◽  
And Performance ◽  
Main Components

Technical specification of the spinner at the Pilot Plant of FTIP Unpad was needed to be reviewed through technical analysis and performance test. Experimental Design method of the research was carried out by on the spot observations, measurements, and recalculating machine main components. Results obtained from technical analysis showed that the machine required a driven power of 216 W, one single belt, a minimum shaft diameter of 16 mm, as well as a pin diameter at the main roller and at the pulley of 5,46 mm and 6 mm, respectively. It had a deflection torsion of 0,0460 a critical shaft speed of 1338 RPM, a bearing life of 3.227.817,96 hours, a frame deflection of 0,24 mm, and a frame welding load of 503,74 N. Sofar, the machine has fulfilled its technical feasibility. While the results of performance tests showed that the best taste sensation of the crackers was termed at an engine speed of 650 rpm at an actual capacity of 3.6 kg/h and at a power of 120 W, a specific spin energy of 120 kJ/kg, a spin yield of 97.38 %, an engine efficiency of 65.60 %, an engine performance index of 0.95 at a level of noissiness of 86.86 dBA. The data has fulfilled the performance requirement, but due to its vibration frequency of 21.44 mm/s – which was dangerous, improvements related to it had to be done. Keywords: technical analysis, oil spinner, performance test ABSTRAK Spesifikasi teknis mesin peniris minyak (spinner) di laboratorium Pilot Plant FTIP UNPAD perlu dikaji-ulang melalui analisis teknik dan uji kinerja. Metode analisis deskriptif dalam penelitian ini dilakukan melalui pengukuran, pengamatan dan  perhitungan terhadap komponen-komponen utama mesin. Hasil analisis teknik menunjukkan bahwa untuk mengoperasikan mesin ini dibutuhkan daya penggerak 216 Watt, satu sabuk, diameter poros minimum 16 mm, defleksi puntiran 0,0460, putaran kritis poros 1338 RPM, diameter pin pada motor penggerak 5,46 mm, diameter pin pada roll utama dan diameter puli 6 mm. Sementara umur bantalan 3.227 jam, lendutan rangka 0,24 mm, dan beban las rangka 503,74 N. Secara teknis mesin ini telah memenuhi kelayakan teknis. Hasil uji kinerja mesin menunjukkan bahwa sensasi rasa kerupuk terbaik diperoleh pada kecepatan putaran motor 650 RPM dengan kapasitas aktual 3,6 kg/jam pada daya 120 Watt, energi spesifik penirisan 120 kJ/kg, rendemen penirisan 97,376 %, efisiensi mesin 65,60 %, indeks performansi mesin 0,95, dan tingkat kebisingan 86,86 dBA. Data ini telah memenuhi spesifikasi kinerjanya. Namun dengan frekuensi getaran 21,44 mm/s (berbahaya). Perbaikan teknis terkait masalah ini masih perlu dilakukan. Kata kunci: analisis teknik, mesin peniris minyak, uji kinerja

scholarly journals Automatic Detection of Granuloma Necrosis in Pulmonary Tuberculosis Using a Two-Phase Algorithm: 2D-TB

2019 ◽  
Vol 7 (12) ◽  
pp. 661
Author(s):  
Pelin Kus ◽  
Metin N. Gurcan ◽  
Gillian Beamer
Keyword(s):  
Pulmonary Tuberculosis ◽  
Performance Test ◽  
Phase 1 ◽  
Performance Testing ◽  
Two Phase ◽  
Background Elimination ◽  
Expert Pathologist ◽  
Histopathological Images ◽  
And Performance ◽  
Automated Algorithms

Granuloma necrosis occurs in hosts susceptible to pathogenic mycobacteria and is a diagnostic visual feature of pulmonary tuberculosis (TB) in humans and in super-susceptible Diversity Outbred (DO) mice infected with Mycobacterium tuberculosis. Currently, no published automated algorithms can detect granuloma necrosis in pulmonary TB. However, such a method could reduce variability, and transform visual patterns into quantitative data for statistical and machine learning analyses. Here, we used histopathological images from super-susceptible DO mice to train, validate, and performance test an algorithm to detect regions of cell-poor necrosis. The algorithm, named 2D-TB, works on 2-dimensional histopathological images in 2 phases. In phase 1, granulomas are detected following background elimination. In phase 2, 2D-TB searches within granulomas for regions of cell-poor necrosis. We used 8 lung sections from 8 different super-susceptible DO mice for training and 10-fold cross validation. We used 13 new lung sections from 10 different super-susceptible DO mice for performance testing. 2D-TB reached 100.0% sensitivity and 91.8% positive prediction value. Compared to an expert pathologist, agreement was 95.5% and there was a statistically significant positive correlation for area detected by 2D-TB and the pathologist. These results show the development, validation, and accurate performance of 2D-TB to detect granuloma necrosis.

scholarly journals Analysis of Energy Consumption and Performance Test on Rice Planting Using Rice Transplanter : A Case Study in West Sumatera Province, Indonesia

2020 ◽  
Vol 4 (1) ◽  
pp. 12-25
Author(s):  
Renny Eka Putri ◽  
Rizka Fadhilah ◽  
Dinah Cherie ◽  
Azkiya Wahyu Novianda
Keyword(s):  
Energy Consumption ◽  
Total Energy ◽  
Performance Test ◽  
Agricultural Sector ◽  
Theoretical Work ◽  
Work Capacity ◽  
Total Energy Consumption ◽  
Effective Work ◽  
Rice Milling ◽  
And Performance

Energy Consumption in the agricultural sector consists of diesel, gasoline, and kerosene for fuel of agricultural machinery (rice transplanter, tractor, rice milling unit, motor sprayer, and water pump) in the sector. The objectives of this study are to determine the total energy consumption of rice planting and to analyse the performance of rice transplanter during rice planting in West Sumatra, Indonesia. This research was conducted on farmer's rice fields in west Sumatera Indonesia. The results obtained from the performance of a rice transplanter machine include working speed of 0.633 m/s, a theoretical work capacity of 0.274 ha/hour, effective work capacity of 0.222 ha/hour and work efficiency of 80.967%. The detail of energy consumption using a rice transplanter are human energy (9.225 MJ/ha), seed energy (255.413 MJ/ha), fuel energy (93.463 MJ/ha) and engine energy (0.821 MJ/ha), so that the total energy consumption is 358.952 MJ/ha.

scholarly journals MODIFIKASI DAN UJI KINERJA UNIT PENYOSOH PADA MESIN PENYOSOH BIJI HANJELI (MPBH-0219)

2020 ◽  
Vol 9 (2) ◽  
pp. 71
Author(s):  
Wahyu K Sugandi ◽  
Ruminta Ruminta ◽  
Asep Yusuf ◽  
Theresia Romey
Keyword(s):  
Performance Test ◽  
Performance Testing ◽  
Engine Efficiency ◽  
Cylinder Length ◽  
Great Pressure ◽  
Polishing Machine ◽  
And Performance ◽  
Unit Analysis

Hanjeli has a hard rind, so it takes a peeler and polisher to process it. One of the machines used is the Hanjeli Polishing Machine AGR-RM40 in the Faculty of Agriculture, Padjadjaran University. However, this machine has the disadvantage that most of the hanjeli seeds are crushed and are not polished. This is due to the polishing space which is quite narrow so that it puts great pressure on the hanjeli seeds during the polishing. Meanwhile, the existence of not polished hanjeli was caused by friction between the cylinders and hanjeli which is not maximum. Therefore, this machine needs to be modified to improve the results of a better polishing. The method used in this research was engineering with several stages, such as designing a polishing unit, analysis, and performance testing on hanjeli batu and hanjeli pulut. The modification of the Polishing Unit on Hanjeli Polishing Machine (MPBH-0219) has a cylinder length dimension of 167 mm and a diameter of 37.9 mm. Based on the performance test, this machine is good and worth using where actual capacity is obtained 35 kg / hour, 96 % engine efficiency, 58,46 % dumping yield, 0.50 performance, and 1.30 kW actual power requirements. Keywords: Hanjeli Polishing Machine, Modification, Performance Test.

scholarly journals Ag/AgCl Reference Electrode Based on Thin Film of Arabic Gum Membrane

2018 ◽  
Vol 18 (3) ◽  
pp. 479 ◽  
Author(s):  
Sagir Alva ◽  
Aiman Sajidah Binti Abdul Aziz ◽  
Mohd Ismahadi Bin Syono ◽  
Wan Adil Bin Wan Jamil
Keyword(s):  
Performance Test ◽  
Reference Electrode ◽  
Performance Testing ◽  
Optimum Concentration ◽  
Stability Testing ◽  
Arabic Gum ◽  
Linear Distance ◽  
Double Junction ◽  
And Performance ◽  
Hydrogel Films

The Ag/AgCl reference electrode based on the Arabic Gum (AG) hydrogel films was successfully developed. The Arabic Gum concentration used in this study was 10–40% (w/v) with an optimum concentration of 20% (w/v). In this study, reference electrode performance testing is based on DmV response of Cl-ion’s measurements, stability tests and performance testing against ISE sensors such as K+, NH4+, and NO3-. The Ag/AgCl based reference electrode of the Arabic Gum film shows an average DmV of 4.0 ± 0.7 mV when response test is performed against a standard Ag/AgCl double junction electrode in various concentrations of Cl-ion’s. Meanwhile, in stability testing conducted in a 0.01 M KCl solution for 72 h found drift of < 0.6 mV/h. The reference performance test of the Arabic Gum reference electrode with three types of ISE NH4+, K+ and NO3- commercial sensors obtaining a slope closer to the Nernst value is 54.9 ± 0.9, 52.3 ± 0.5 and -53.2 ± 0.2 mV/dec with all having a linear distance of 0.1–10-5 M.

scholarly journals Design and Performance Test of the Coffee Bean Classifier

2021 ◽  
Author(s):  
Ansar Ansar ◽  
Sukmawaty Sukmawaty ◽  
Murad Murad ◽  
Surya Abdul Muttalib ◽  
Riyan Hadi Putra ◽  
...  
Keyword(s):  
Performance Test ◽  
Work Capacity ◽  
Operating Conditions ◽  
Coffee Bean ◽  
Working Capacity ◽  
Rotating Speed ◽  
Coffee Beans ◽  
Long Time ◽  
Effectiveness And Efficiency ◽  
And Performance

Nowadays, some coffee production centers are still classification manually, so it requires a very long time, a lot of labor, and expensive operational costs. Therefore, the purpose of this research was to design and performance of the coffee bean classifier that can accelerate the process of classification beans. The classifier used consists of three main parts, namely the frame, driving force, and sieves. Research parameters include classifier work capacity, power, specific energy, classification distribution and effectiveness, and efficiency. The results showed that the best operating conditions of the coffee bean classifier was found at a rotational speed of 91.07 rpm and a 16&deg; sieves angle with a classifier working capacity of 38.27 kg/h, the distribution of the seeds retained in the first sieve was 56.77 %, the second sieves was 28.12%, and the third sieves was 15.11%. The efficiency of using a classifier was found at a rotating speed of 91.07 rpm and a sieves angle of 16&deg;. This classifier was simple in design, easy to operate, and can sort coffee beans into three classification, namely small, medium, and large.

scholarly journals Functional and performance test of modified lug wheel on two wheels tractor with pivot type trailer

2021 ◽  
Vol 922 (1) ◽  
pp. 012016
Author(s):  
M Idkham ◽  
M Dhafir ◽  
Safrizal ◽  
L Putri
Keyword(s):  
Performance Test ◽  
Performance Testing ◽  
Oil Fields ◽  
Functional Testing ◽  
Wheel Slip ◽  
Sloping Land ◽  
Turning Radius ◽  
Fresh Fruit Bunches ◽  
And Performance ◽  
The Stability

Abstract Palm oil fields with slopes require special wheels for transportation for transporting fresh fruit bunches (FFB), the special wheels in question are modified wheels from the existing cage wheel, the modified wheels can adjust the slope conditions on the land with the lug angle adjustment mechanism. The objective of this study was to test the functional and performance of the modified lug wheel as a means of transporting FFB on sloping land using a hand tractor on a pivot type trailer. Functional testing on the modified lug wheel was carried out by observing changes in the angle of the lugs (0, 15, 30, 45)0 by lifting one of the tractor shafts first using a jack, after which the locking pins were released. The angle change rim can be moved clockwise or anticlockwise by hand according to the desired lug angle. Performance testing on the modified lug wheel is carried out by observing and calculating the slip on the wheel. Functional testing on trailer pivots is carried out by observing all components of the towing system when installed and operated, to determine whether the trailer towing system can function properly. Performance testing on the pivot trailer is done by observing and calculating the turning radius when the tractor turns. Performance testing is also carried out by observing the stability of the two-wheel tractor and trailer. The slope of the land and the angle of the lugs greatly affect wheel slip, the higher the slope on a land, the higher the possibility of wheel slippage during operation. The test results show that the use of modified lug wheels shows better performance at 30° lug angle, as seen from the smaller slip value at 30° lug angle.

scholarly journals Design and Performance Test of the Coffee Bean Classifier

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1462
Author(s):  
Ansar ◽  
Sukmawaty ◽  
Murad ◽  
Surya Abdul Muttalib ◽  
Riyan Hadi Putra ◽  
...  
Keyword(s):  
Performance Test ◽  
Work Capacity ◽  
Operating Conditions ◽  
Coffee Bean ◽  
Working Capacity ◽  
Rotating Speed ◽  
Coffee Beans ◽  
Long Time ◽  
Effectiveness And Efficiency ◽  
And Performance

Currently, some coffee production centers still perform classification manually, which requires a very long time, a lot of labor, and expensive operational costs. Therefore, the purpose of this research was to design and test the performance of a coffee bean classifier that can accelerate the process of classifying beans. The classifier used consisted of three main parts, namely the frame, the driving force, and sieves. The research parameters included classifier work capacity, power, specific energy, classification distribution and effectiveness, and efficiency. The results showed that the best operating conditions of the coffee bean classifier was a rotational speed of 91.07 rpm and a 16° sieve angle with a classifier working capacity of 38.27 kg/h: the distribution of the seeds retained in the first sieve was 56.77%, the second sieve was 28.12%, and the third sieve was 15.11%. The efficiency of using a classifier was found at a rotating speed of 91.07 rpm and a sieve angle of 16°. This classifier was simple in design, easy to operate, and can sort coffee beans into three classifications, namely small, medium, and large.

Technical Feasibility to Utilize Wasted Empty Fruit Bunch from Small Scale Farms for Simultaneous Production of Biochar and Electricity

2020 ◽  
Vol 3 (3) ◽  
pp. 88-98
Author(s):  
Dwi Setiawan ◽  
Johanis Rumengan Pangala ◽  
Abdul Baits Dehana Padma Swastika ◽  
Armansyah Halomoan Tambunan
Keyword(s):  
Electricity Generation ◽  
Energy Use ◽  
Performance Test ◽  
Small Scale ◽  
Airflow Rate ◽  
Empty Fruit Bunch ◽  
Technical Feasibility ◽  
Excess Heat ◽  
Simultaneous Production ◽  
And Performance

Biochar production by pyrolysis stove and utilization of the excess heat to generate electricity, simultaneously, could improve the performance of the whole system, and give a significant solution to both energy and environmental problems. This is especially if implemented as a stand-alone facility and applied in a remote area. The purpose of this study is to evaluate technical feasibility and strategy in using pyrolysis stoves to produce biochar and generate electricity by ORC, simultaneously. This study combines various data obtained previously, which consists of pyrolysis stove design and performance test for simultaneous biochar production and thermal energy use, and ORC experiments for electricity generation. Those data then was used to analyze the technical feasibility of the simultaneous production of biochar and electricity generation using the excess heat from the pyrolysis stove. The integration of the pyrolysis stove with the ORC was conducted in a simulative study. The results showed that biochar produced using the pyrolysis stove has characteristics that are very supportive for use as a soil enhancer. Excess heat from the pyrolysis stove during the production of biochar can be used to fuel the ORC system to generate electricity. The optimum biochar yield and thermal efficiency of the ORC were found to be optimum at the stove's airflow rate of 0.034-0.035 kg/s. Accordingly, a combination of biochar production and electricity generation using the ORC system is considered to be technologically feasible to meet the sustainability requirement.

Maternal effects and selection response with an application to sheep data

1976 ◽  
Vol 22 (3) ◽  
pp. 359-369 ◽  
Author(s):  
J. P. Hanrahan
Keyword(s):  
Maternal Effects ◽  
Performance Test ◽  
Performance Testing ◽  
Selection Response ◽  
Genetic Effects ◽  
Progeny Testing ◽  
Test Selection ◽  
Selection Strategies ◽  
Maternal Performance ◽  
And Performance

SUMMARYThe implications of genetic variation in maternal performance for the relative merits of common selection strategies have been investigated. If the accuracy of progeny testing is computed without taking maternal effects into account, the estimate is biased upward. This bias increases as the correlation between direct and maternal genetic effects decreases from positive to negative values. The relative efficiency of progeny and performance test selection is a function of the heritability of direct and maternal genetic effects and the correlation between them. In terms of genetic gain per unit time, progeny testing is almost always less efficient than performance testing. For sire line improvement progeny testing is relatively more useful but is still likely to be less efficient than performance test selection unless there is a negative correlation between direct and maternal genetic effects or the correlation between purebred and crossbred direct genetic effects is very low or negative.Analysis of body weight at 6 and 14 weeks of age in Galway sheep has shown that maternal genetic effects are an important source of variation in this population.

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