Optimization of single locking cotton feeder for maximizing ginning output and minimizing specific energy of double roller gin

2018 ◽  
Vol 89 (12) ◽  
pp. 2364-2375
Author(s):  
Vishnu G Arude ◽  
Suresh P Deshmukh ◽  
Prashant G Patil ◽  
Sujeet K Shukla
Keyword(s):  
Information System ◽  
Response Surface Methodology ◽  
Specific Energy ◽  
Energy Requirement ◽  
Fiber Quality ◽  
High Volume ◽  
Quality Parameters ◽  
Conventional System ◽  
Specific Energy Requirement ◽  
Quadratic Models

The aim of the study was to improve the efficiency of the double roller cotton gin in terms of ginning output and energy consumption. Therefore a spike cylinder–type gin feeder with the concept of single locking of cotton bolls was developed and optimized. The speed of the spike cylinder of the single locking feeder and cotton moisture were optimized using response surface methodology for long and medium staple cotton. Ginning output of the double roller gin was maximized and the specific energy requirement for ginning was minimized during optimization. Quadratic models were fitted for prediction of ginning output and specific energy. Optimum cotton moisture of 7.38 and 7.15% and optimum spike cylinder speed of 307 and 297 rpm with desirability of 0.9185 and 0.8923 were arrived at using multiple regression analysis for long and medium staple cotton, respectively. Use of the single locking cotton feeder for long and medium staple cotton resulted in a 22 and 25% increase in ginning output, respectively, and a 12 and 13.5% reduction in specific energy requirement, respectively, compared to the conventional system, the auto-feeder. The single locking feeder showed significant improvement in the color grade of cotton. Other high volume instrument and advanced fiber information system fiber quality parameters remained unaffected.

Energetic relationships for crushing of soil clods

2006 ◽  
Vol 2 (1) ◽  
pp. 51-72
Author(s):  
István Patay ◽  
Virág Sándor
Keyword(s):  
Moisture Content ◽  
Specific Energy ◽  
Soil Moisture Content ◽  
Energy Requirement ◽  
Clay Content ◽  
Clay Soils ◽  
Rigid Support ◽  
Soil Plasticity ◽  
Specific Energy Requirement ◽  
The Relationship

Clod crushing is a principal problem with soils of high clay content. Therefore, there is a need for determining the conditions for clod breaking and clod crushing. The objective of the work was to develop a special purpose tool for single clod breaking both by rigid support of the clod and by a single clod supported by soil and to develop a machine for clod crushing. Furthermore, the purpose was to determine the relationship between the specific energy requirement for clod crushing in the function of soil plasticity and the soil moisture content by the means of the developed tool and machine. The main result of the experiments is summarized in a 3D diagram where the specific energy requirement for soil clod crushing is given in the function of the moisture content and the plasticity index for different clay soils.

Specific Energy Requirement for Compacting Corn Cobs

2010 ◽  
Vol 148-149 ◽  
pp. 245-252
Author(s):  
Zhi Qiang Jin ◽  
Shun Xi Wang
Keyword(s):  
Particle Size ◽  
Specific Energy ◽  
Energy Requirement ◽  
Linear Regression Analysis ◽  
Specific Energy Consumption ◽  
Hydraulic Press ◽  
Corn Cob ◽  
Corn Cobs ◽  
Specific Energy Requirement ◽  
Ground Corn

Corn cobs are potential feedstock for producing heat, power, fuels, and chemicals. Densification of corn cobs into briquettes/pellets would improve their bulk handling, transportation, and storage properties. The objective of this study was to investigate the densification characteristics and specific energy requirements for the compression of corn cobs under four pressure levels (10, 12, 14, 16MPa) and with two particle size levels (2.41mm, 0.86mm). The compression behavior of ground corn cobs was studied using a hydraulic press briquetteing machine whose cylindrical die diameter was about 30 mm. The corn cobs moisture content and preheat temperature before compaction was 10% (w.b.) and 75 °C, respectively. The cylindrical die temperature was maintained at 90 ± 5 °C. It was found that the briquette density ranged from 809 to 1043 kg m-3; while the total specific energy requirement to compress and extrude briquette ranged from 17 to 26 MJ t-1, with an increase in pressure. Particle size had also a significant effect on briquette density and specific energy requirement. The finer corn cob grinds (0.86mm) resulted in higher density and lower specific energy requirement than the coarser corn cob grinds (2.41mm). New statistical models were developed to describe the total specific energy consumption of ground corn cobs during densification using a multiple linear regression analysis.

scholarly journals Development of a Hammer Mill with Double Sieving Screens

2020 ◽  
Vol 5 (5) ◽  
pp. 617-621
Author(s):  
Oluyemisi Adebanjo Ojomo ◽  
A. J. Fawohunre
Keyword(s):  
Moisture Content ◽  
Specific Energy ◽  
Energy Requirement ◽  
Hammer Mill ◽  
Performance Indices ◽  
Dual Purpose ◽  
Specific Energy Requirement ◽  
Level Of Significance ◽  
Machine Speed ◽  
The Relationship

A hammer mill with double sieving device was designed and fabricated from locally available materials for grinding grains and other agricultural products. The conceptual design was based on the principle of design by analysis. The test carried out on the machine showed that the crushing capacity of the machine is 51.5 Kh/hr. The moisture content, machine speed and the interaction between them had significant effect on the milling power and specific energy requirement at 5 % level of significance. Milling power and specific energy requirement of the machine increased with increase in moisture content. The maximum crushing efficiency of 79.3 %, minimum milling power and specific energy requirement of 0.09 Kw and 3.04 Kwh/mg respectively were obtained at moisture content of 8 % (wb) and machine speed of 2000 rpm. Regression models that could be used to express the relationship existing between the hammer mill performance indices, product moisture content and machine speed were established. The machine has dual purpose for either electric motor or petrol engine.

Energy consumption, thermal utilization efficiency and hypericin content in drying leaves of St John’s Wort (Hypericum Perforatum)

2014 ◽  
Vol 25 (3) ◽  
pp. 27-35 ◽  
Author(s):  
Saeid Minaei ◽  
Hossein Ahmadi Chenarbon ◽  
Ali Motevali ◽  
Akbar Arab Hosseini
Keyword(s):  
Energy Consumption ◽  
Specific Energy ◽  
Energy Requirement ◽  
Sample Thickness ◽  
Utilization Efficiency ◽  
Total Energy Consumption ◽  
St John’S Wort ◽  
St John's Wort ◽  
Specific Energy Requirement ◽  
Air Dryer

Massive consumption of energy in the drying industry has prompted extensive research regarding various aspects of drying energy and requirements. Thermal utilization efficiency, specific energy requirement, total energy consumption and hypericin content in drying of St John’s Wort were determined using a hot-air dryer. Experiments were conducted at four air temperature levels (40, 50, 60, and 70°C), three air velocities (0.3, 0.7, and 1 m/s) and three sample thicknesses (1, 2 and 3 cm). Based on the results of data analysis, minimum and maximum levels of energy consumption were 0.56 and 3.24 kWh, respectively. The required specific energy decreased with increasing sample thickness. The minimum and maximum required specific energies were 4.41 and 17.53 for 2 cm thick and 4.28 and 13.67 for 3 cm thick layers (kWh/kg), respectively. The maximum and minimum values of thermal utilization efficiency in different treatments were found to be 14% and 72%, respectively. Hypericin content decreased with increasing temperature and increased with air velocity and product sample thickness, so that the minimum and maximum hypericin amounts were 67 and 355 ppm, respectively.

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