A Study on the Development Ability of Economic Zones Above Provincial Level in Anhui Province -Based on Principal Component Analysis

This paper uses the principal component analysis method to measure the output capacity, input capacity and comprehensive development capacity of development zones in 2017, taking nine indicators reflecting the economic development capacity of 11 development zones above the provincial level in Anhui Province as the research object. The results show that the development level of 11 development zones in Anhui Province is not high on the whole, and the output capacity and comprehensive development capacity show a trend of polarization; the input capacity has three obvious levels, and the location advantage plays an important role in the development o economic zones.

MODIFIKASI DIAMETER INLET DAN PENGARUH KEKERASAN KARET TERHADAP HASIL LADA PADA MESIN PENGUPAS LADA SISTEM CRUSHER

Based on previous research, specifications of machine have a slope of a dish of 0.68 ° and inlet diameter of 30 mm, produce 1 kg/hour of input capacity and 0.64 kg/hour of output capacity. From the evaluation results, to increase the input capacity it is necessary to increase the inlet diameter and analyze the effect of rubber hardness on the results of peeling pepper. Modifiying the inlet diameter, input capacity increase to 6 kg/hour or increasing 5 times compared to the input capacity of the previous research. For hardness of rubber 60 shore A, the percentage of pepper peeled was 72.13% with an engine output capacity of 4.33 kg/hour. For rubber hardness of 70 shore A, the percentage of pepper peeled was 73.03% with an engine output capacity of 4.38 kg / hour. Visually, dry pepper with a hardness of 60 shore A whiter than dry pepper hard with a hardness of 70 shore A.

Development of a Densification Equipment for Organic Biomass Solid Fuel Pellets

In South Western Nigeria, after the harvesting of maize cobs from the field, large amount of maize stock remains as agricultural residues and wastes. The maize stock constitutes a menace to the environment if not property handled. In this study, densification equipment was designed, fabricated and tested using maize stock grind as raw material. The equipment consists of mixer/ moisture conditioner and a pelleting machine. The power rating for the mixer/moisture conditioner is 0.069 kW with an input capacity of 81 kg/h while the power consumption of the pellet machine is 0.8 kW with throughout capacity of 40 kg/h. The result of the test showed that the highest product temperature, which gives an indication of the quality and durability of the pellets produced was 930C at 0.8 mm hammer mill screen size, 10% moisture content and 150 rpm die speed, at this temperature the machine is operating at optimum efficiency of 74%. High product temperature is an important parameter during pelleting/briquetting operations because it gives the degree of compaction and binding of the pellets/briquettes. The densification equipment for organic biomass was developed using locally sourced materials as a means of converting agricultural wastes into pellets for domestic cooking and cottage industry uses.

Relationship modelling between moisture content of flour and variables of two-cycle drying process of cassava flourusing pneumatic dryer

Moisturecontent (MC) is the most important variable in evaluating material drying performance, so the ability to predict MC in drying process is really important. This research aims to formulate the mathematic relationship between drying process variable pneumatically and moisture content of cassava flour in drying process 1 and 2 by applying dimensional analysis. In this research, there has been a design of pneumatic drying equipment and test using various treatments such as input capacity, drying air temperature, and drying air velocity. Based on the data analysis, the relationship between MC and drying process variables are as follow: Drying cycle 1: MC = (5,794287E − 22). (ρpr·Dpr3/Qi·θ)1,4085 (Tu/Tbo)-2,2504 (Vu·θ/Dpr)5,863 Drying cycle 2: MC = (2,36831E − 10). (ρprDpr3/Qi·θ)1,059 (Tu/Tbo)-4.808 (Vu·θ/Dpr)3,709 The equations have determination coefficient value 0.85, so it has big possibility to use it as alternative to predict moisture content of dried flour.

PEMODELAN MATEMATIS HUBUNGAN KADAR AIR TEPUNG DENGAN VARIABEL PROSES PADA PENGERINGAN MEKANIS TEPUNG KASAVA MENGGUNAKAN PNEUMATIC DRYER

Moisture content of the materials (Ka) is the most important variable in evaluating the performance of drying process, therefore the ability to predict moisture-content of the materials in the drying process is very important. The objective of this research was to formulate a mathematical relationship between various pneumatic drying process variables and the moisturecontent of the materials of cassava flour by applying dimensional analysis. In this research, a pneumatic drying equipment and test edit in wide varieties of treatments, such as the input capacity, drying air temperature, and drying air velocity. Based on the result of data analysis, it was obtained that the relationship between moisture content of the materials and the drying process variables could be expressed as followThis equation had 0,722 coefficient of determination, so that it could be used to predict the moisture content of cassava flour precisely. Sensitivity analysis indicated that the dimensionless product which had the largest effect on Ka was.Keywords: Cassava flour, pneumatic drying, dimensional analysis, moisture content ABSTRAKKadar air bahan (Ka) merupakan variabel yang paling penting dalam mengevaluasi kinerja proses pengeringan bahan, sehingga kemampuan untuk memprediksi Ka dalam proses pengeringan akan menjadi sangat penting. Penelitian ini bertujuan untuk memformulasikan hubungan matematis antara berbagai variabel proses pengeringan secara pneumatik dengan Ka akhir tepung ketela pohon dengan menerapkan analisis dimensi. Pada penelitian ini telah dirancang peralatan pneumatic drying dan dilakukan pengujian dengan berbagai macam variasi perlakuan seperti kapasitas input, temperatur udara pengering, dan kecepatan udara pengering. Berdasarkan hasil analisis data maka diperoleh hubungan antara Ka dengan variabel-variabel proses pengeringan sebagai berikut:Persamaan tersebut mempunyai nilai koefisien determinasi 0,722 sehingga besar kemungkinan untuk dapat digunakansebagai alternatif dalam memprediksi kadar air tepung hasil pengeringan. Hasil uji sensitivitas menunjukkan bahwadimensionless product yang paling berpengaruh terhadap nilai Ka adalah ்ೠ .Kata kunci: Tepung kasava, pneumatic drying, analisis dimensi, kadar air

Biomass potential assessment for locating biorefinery plant in Hungary

To find a suitable site for a 150,000 metric ton dry material per year (t dm/yr) input capacity biorefinery plant in Hungary is a challenging task. Not only biomass potentials have to be assessed, competing uses, sustainability aspects, public opinion and future threats to feedstock availability should be also taken into account. As a result of our calculations, currently there is enough feedstock available for the targeted input capacity to operate in an ecologically sustainable way. However, several factors may threaten the future of feedstock availability. In the long run enhanced price competition is anticipated for biomass among biorefinery, livestock keeping, timber industry and biomass based renewable energy production. The majority of stakeholders accept in general biorefinery as a promising solution for substituting fossil based plastics, still local interests give priority to a balanced agricultural production including higher shares of husbandry.

Design and Fabrication of a Palm Kernel Nut and Shell Separating Machine

This paper presents a novel design and fabrication of a palm kernel nut and shell separating machine to improve the turnout rate as well as the overall efficiency of the machine. Standard design procedures were adapted from Design Engineering text and hand books, in the specifications and computation of dimensions of various components of the machine. Seven repetitions were carried out in the measurements of input and separated nuts and shells as basis for computing mean values and efficiencies. The components of the kernel nut and shell separating machine were designed and fabricated from locally available materials using manufacturing methods explained in the paper. Suitable tests were done and the over-all performance was found to be satisfactory. The machine has an input capacity of 29.42 kg by weight, a mean separation time of 50.75 seconds and an overall efficiency of 96.59 %. This is a very simple and effective machine.