Temperature during the vibration-assisted compression of alfalfa

BioResources ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 141-150
Author(s):  
Xiaoyu Wu ◽  
Shuai Yang ◽  
Chundong Song ◽  
Kun Ding ◽  
Chuanzhong Xuan ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Vibration Frequency ◽  
Experimental Results ◽  
Maximum Temperature ◽  
Compression Time ◽  
Vibration Parameters ◽  
Reducing Energy ◽  
Compression Temperature

Compression of alfalfa into briquettes is an effective way to solve the problem of storage and transportation. In the process of compression, heat is generated and the temperature is raised in the material. In fact, the appropriate temperature can improve the quality of alfalfa briquettes and reduce the energy consumption of densification. In this study, the effect of assisted vibration on the compression temperature was tested. The results showed that when the vibration frequency was below 15 Hz, the temperature at the center and side in compressed alfalfa increased slowly with compression time. When the vibration frequency was above 20 Hz, it increased first and then decreased with the increase of time. Moreover, the maximum temperature value increased remarkably when the frequency was above 20 Hz. In the same vibration frequency and compression time, the center temperature in the compressed alfalfa was higher than the side temperature. The experimental results provide a reference for the determination of reasonable vibration parameters, and explanation of the effect of vibration on reducing energy consumption.

scholarly journals Mining Equipment Technical Condition Monitoring

2018 ◽  
Vol 41 ◽  
pp. 03020 ◽  
Author(s):  
Evgeny Kuzin ◽  
Vladimir Bakin ◽  
Dmitriy Dubinkin
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Condition Monitoring ◽  
Technical Condition ◽  
Process Equipment ◽  
Mining Equipment ◽  
The Earth ◽  
Vibration Parameters ◽  
Reducing Energy

The Earth, being the main object and operational basis for mining, is exposed to the greatest impact because of extracting minerals. Protection of elements of the biosphere, including subsoil, should provide for the provision of scientifically based and economically justified completeness and complexity of use. The article discusses the need to monitor the technical condition of mining equipment, as applied to assessing its technical condition and reducing energy consumption by this equipment. The dependence of energy consumption on vibration parameters and temperature of equipment surfaces is shown. The data of the results of vibration parameters monitoring are given. Criteria are given for estimating the energy efficiency of operation of process equipment and, accordingly, the influence of these parameters on the environment.

MNVPCS: Multinode Virtual-Point–Based Charging Scheme to Prolong the Lifetime of Wireless Rechargeable Sensor Networks

2019 ◽  
Vol 63 (2) ◽  
pp. 283-294
Author(s):  
Hong-Yi Chang ◽  
Zih-Huan Hang ◽  
Yih-Jou Tzang
Keyword(s):  
Energy Consumption ◽  
Sensor Networks ◽  
Experimental Results ◽  
Sensor Nodes ◽  
Wireless Charging ◽  
Mobile Wireless ◽  
Wireless Rechargeable Sensor Networks ◽  
Virtual Point ◽  
Over Time

Abstract Wireless-charging technology can utilize a mobile wireless charging vehicle (WCV) to rescue dying nodes by supplementing their remaining energy, and using WCVs in this way forms wireless rechargeable sensor networks (WRSNs). However, a WCV in a WRSN encounters several challenges, collectively called the optimized charging problem. This problem involves a set of sensor nodes randomly distributed on the ground for which the WCV must determine an appropriate travel path to charge the sensor nodes. Because these sensor nodes have different workloads, they exhibit different energy consumption profiles over time. Resolving the above-mentioned problem requires the determination of the priority of charging the sensor nodes based on the order in which they are expected to die and subsequently finding the most efficient path to charge the sensor nodes such that sensor death is avoided for as long as possible. Furthermore, the most efficient placement of the charging point needs to be considered when planning the charging path. To address this, the proposed multinode virtual point-based charging scheme (MNVPCS) considers both the planning of an efficient charging and the best location for the charging point. Experimental results show that MNVPCS can improve the lifetime of the entire WRSN and substantially outperform other methods on this measure.

scholarly journals Research on the relative productivity of a drum mill type SAG 8.5×5.3

2020 ◽  
Vol 168 ◽  
pp. 00012
Author(s):  
Ivan Minin
Keyword(s):  
Energy Consumption ◽  
Control Parameters ◽  
Operational Mode ◽  
Operational Parameters ◽  
Technological Parameters ◽  
Expected Performance ◽  
Relative Productivity ◽  
Required Quality

The determination of the optimal operational mode of drum mills can be assessed by different criteria. The most important of them can be formulated as follows: “To be specified and established the values of the mill operational parameters regarding to which it is possible to be provided the user’s expected performance at the required quality of the final product and the same to be achieved at minimal energy consumption”. For the fulfillment of this condition, there has to be determined the laws of productivity variation, the final product quality and the energy consumption in function of the adequately chosen representative control parameters of the mill. There are obtained mathematical models, describing the most important technological parameters of the machine and are made conclusions about the factors influencing on them.

Determination of Optimal Temperature for Defect-Free Casting of Aluminium in the LP-LFC Process

2011 ◽  
Vol 101-102 ◽  
pp. 934-937
Author(s):  
Ji Qiang Li ◽  
Zhong Zhao ◽  
Zi Tian Fan ◽  
Zhi Xin Jia ◽  
Wen Liu ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Aluminium Alloys ◽  
Low Pressure ◽  
Experimental Results ◽  
Metal Temperature ◽  
Lost Foam Casting ◽  
Optimal Temperature ◽  
Pouring Temperature ◽  
Lost Foam

Fluidity of ZL101 aluminium alloys in the low-pressure lost foam casting (LP-LFC) process has been investigated by altering various temperature variables. The experimental results indicate that the LP-LFC process had fine fluidity, and the pouring temperature was lower than conventional lost foam casting. The effect of the metal temperature on the fluidity is marginal in the LP-LFC process. Excessive pouring temperature not only aggrandizes energy consumption but also deteriorates porosity defect. The success of casting cooling fin demonstrates the advantages of LP-EPC process in producing high-complicated castings.

Force Distribution With Pose-Dependent Force Boundaries for Redundantly Actuated Cable-Driven Parallel Robots

2016 ◽  
Vol 8 (4) ◽  
Author(s):  
Han Yuan ◽  
Eric Courteille ◽  
Dominique Deblaise
Keyword(s):  
Energy Consumption ◽  
Lower Boundary ◽  
Parallel Robots ◽  
Force Distribution ◽  
Computational Accuracy ◽  
Boundary Method ◽  
Redundantly Actuated ◽  
Cable Forces ◽  
Reducing Energy

This paper addresses the force distribution of redundantly actuated cable-driven parallel robots (CDPRs). A new and efficient method is proposed for the determination of the lower-boundary of cable forces, including the pose-dependent lower-boundaries. In addition, the effect of cable sag is considered in the calculation of the force distribution to improve the computational accuracy. Simulations are made on a 6DOF CDPR driven by eight cables to demonstrate the validity of the proposed method. Results indicate that the pose-dependent lower-boundary method is more efficient than the fixed lower-boundary method in terms of minimizing the motor size and reducing energy consumption.

scholarly journals Study by the numerical method of increasing the efficiency of falling ventilation jets for a channel compact air conditioning system

2020 ◽  
Vol 17 (6) ◽  
pp. 164-170
Author(s):  
V. R. Taurit ◽  
◽  
I. I. Sukhanova ◽  
A. N. Kolosnitsyn ◽  
◽  
...  
Keyword(s):  
Energy Consumption ◽  
Numerical Method ◽  
Temperature Difference ◽  
Air Conditioning ◽  
Initial Temperature ◽  
Air Conditioning System ◽  
Air Conditioning Systems ◽  
Reducing Energy

The problem of significantly reducing the consumption of ventilation air in ducted air conditioning systems by optimizing the efficiency of the air distributor is solved. Unconventional falling non-isothermal jets are experimentally investigated by numerical method with the identification of the structure features and determination of the calculated coefficients m and n according to the proposed methodology. The possibilities of reducing energy consumption by increasing the initial temperature difference of the supply duct air are shown.

QUALITY INCREASING OF TECHNICAL AND POTABLE WATER DUE TO COMPLEXATION BETWEEN AMINO ACIDS AND Ca AND Mg SALTS

2018 ◽  
Vol 61 (6) ◽  
pp. 109
Author(s):  
Vitaly V. Ovchinnikov ◽  
Alexey A. Kulakov
Keyword(s):  
Amino Acids ◽  
Potable Water ◽  
Experimental Results ◽  
Heating Systems ◽  
Home Heating ◽  
Quality Of Waters ◽  
Calcium And Magnesium ◽  
High Degree

The home heating systems as well as the food industry require a high degree of water purification. In the aims of the increasing of the quality of technical and potable water the experiments on the determination of the rigidity of water have been carried out in the fourth districts of Kazan after the addition to the water samples of β-alanine and l-asparagine as the agents for the complex formation with calcium and magnesium salts. The obtained results showed that the chosen amino acids able to reduce the rigidity and increase the quality of waters in 1.10-1.22 time. The calculated heats of combustion and formation of complexes of calcium and magnesium with alanine and asparagine confirm the conducted experimental results on their stability. Such experimental results prompted us to calculate the heat of combustion (DсH°) and formation (DfH°) of complexes of calcium and magnesium with the mentioned above amino acids [Met(amino acid)2, DсH°, DfH° (kJ mol-1± 0.5 % , respectively), number of valence electrons (N-g)] in according to the scheme of thermochemical research. It has been suggested to introduce the above mentioned amino acids or synthesized on their base little peptides into sorption-filters at the water preparation process.Forcitation:Ovchinnikov V.V., Kulakov A.A. Quality increasing of technical and potable water due to complexation between amino acids and ca and mg salts. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 6. P. 109-112

scholarly journals INFLUENCE OF TECHNOLOGICAL MODES OF THERMOCHEMICAL TREATMENT ON THE QUALITY OF STRENGTHENING OF HIGHLY LOADED GEARS

2020 ◽  
pp. 75-82
Author(s):  
V. A. Teldekov ◽  
L. M. Gurevich
Keyword(s):  
Energy Consumption ◽  
Thermochemical Treatment ◽  
Hardened Layer ◽  
Carbon Potential ◽  
Effective Thickness ◽  
Diffusion Coatings ◽  
Process Gases ◽  
Highly Loaded ◽  
Reducing Energy

The study of changes in the microstructure, thickness and hardness of diffusion coatings obtained by varying the carbon potential and the consumption of process gases at different stages of cementation and nitrocarburizing was carried out. The possibility of reducing energy consumption and the duration of thermochemical treatment with the provision of the required effective thickness of the hardened layer is established.

Study on Separating Mixed Dichlorophenol by Cross-Current Dissociation Extraction

2011 ◽  
Vol 347-353 ◽  
pp. 1255-1258
Author(s):  
Jing Jing Zhu ◽  
Jun Lin ◽  
Qun Qun Huang
Keyword(s):  
Energy Consumption ◽  
Detailed Analysis ◽  
Experimental Results ◽  
Raw Material ◽  
Processing Step ◽  
Simple Processing ◽  
A New Technique ◽  
Quality Of Products ◽  
Cross Current

Based on the detailed analysis on the properties of each component in the system of dichlorophenol mixture in this paper, a new technique was proposed, which is used to extract 2,4- dichlorophenol through the method of cross-current dissociation extraction. The experimental results show that the quality content of 2,4- dichlorophenol can be refined to more than 98% with the yield reaching to 95% at a blow from raw material mixture after three grades of dissociation extraction. Compared with the traditional technique, the new method can bring about a comparatively simple processing step, meanwhile, the quality of products can be stable and the energy consumption can also be reduced.

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