Selection of the Separation Procedure of Multicomponent Mixtures in Systems Using Mechanical Energy

2021 ◽  
Vol 13 (5) ◽  
pp. 870-876
Author(s):  
A. I. Balunov ◽  
I. A. Sukin ◽  
A. M. Tsirlin
Keyword(s):  
Mechanical Energy ◽  
Separation Procedure ◽  
Multicomponent Mixtures ◽  
Selection Of

The Rule of Temperature Coefficients for Selection of Optimal Separation Sequence for Multicomponent Mixtures in Thermal Systems

2017 ◽  
Vol 42 (4) ◽  
Author(s):  
Anatoly Tsirlin ◽  
Ivan Andreevich Sukin ◽  
Alexander Balunov ◽  
Karsten Schwalbe
Keyword(s):  
Heat Supply ◽  
Multicomponent Mixtures ◽  
Balance Equations ◽  
Thermal Systems ◽  
Temperature Coefficients ◽  
Optimal Separation ◽  
System A ◽  
Separation Sequence ◽  
Fractionation Plant ◽  
Selection Of

AbstractIn this paper an estimate for the reversible molar heat supply needed for fully separating a certain mixture is given on the basis of thermodynamic balance equations. It is shown that in order to estimate this heat supply one should solve the problem of selecting the optimal separation sequence. The algorithm solving this task is given. This algorithm allows to select the separation sequence on the basis of preliminary calculations, knowing only the properties of the component that one wants to separate. The solution algorithm is demonstrated for an exemplary system: a gas-fractionation plant.

Numerical Modeling of Vertical Axis Wind Turbines

2014 ◽  
Author(s):  
Teresa Parra-Santos ◽  
Armando Gallegos-Muñoz ◽  
Miguel A. Rodriguez-Beneite ◽  
Cristobal Uzarraga-Rodriguez ◽  
Francisco Castro-Ruiz
Keyword(s):  
Mechanical Energy ◽  
Vertical Axis ◽  
The Self ◽  
Power Coefficient ◽  
Speed Ratio ◽  
Vertical Axis Wind Turbine ◽  
Tip Speed Ratio ◽  
Vertical Axis Wind Turbines ◽  
Selection Of ◽  
Rotor Axis

This paper aims to predict the performance of Vertical Axis Wind Turbine (VAWT), hence the modeling of kinetic energy extraction from wind and its conversion to mechanical energy at the rotor axis, is carried out. The H-type Darrieus turbine consists of three straight blades with shape of aerofoil attached to a rotating vertical shaft. The criterion on the selection of this kind of turbines, despite its reduced efficiency, is the easy manufacture in workshops. A parametric study has been carried out to analyze the camber effect on the non dimensional curves of power coefficient so that the self starting features as well as the range of tip speed ratio of operation could be predicted.

Factors Affecting Electrochemical Honing of SS-316

2016 ◽  
Vol 823 ◽  
pp. 513-518
Author(s):  
Harpreet Singh ◽  
Pramod Kumar Jain
Keyword(s):  
Mechanical Energy ◽  
Electrochemical Machining ◽  
Electrical Energy ◽  
Proper Selection ◽  
Workpiece Surface ◽  
Factors Affecting ◽  
Good Surface ◽  
Percentage Improvement ◽  
Precision Finishing ◽  
Selection Of

Electrochemical Honing (ECH) is a process of precision finishing of functional surfaces with the use of the electrical and mechanical energy. It is reported that the 90 percent of the material is removed by electrochemical machining (ECM) process and remaining 10 percent by mechanical scrubbing, which shows the electrical energy is the main constituent in the ECH process. Basically, electrical energy is combined with chemical to form an electrolysis dissolution to remove material from the workpiece surface. This work presents a study for the factors affecting the electrochemical honing of SS-316 turned surfaces, especially the processing time and electrolyte composition. The percentage improvement in surface roughness (Ra, Rt) and out-of-roundness (OOR) as a monitored output of ECH were determined. The results are finally furnished with the aim to generalize a useful guideline for the user to enable proper selection of conditions for obtaining good surface quality.

scholarly journals The separation of maximum amounts of precipitation for the Polish Atlas of Rains Intensities (PANDa)

2019 ◽  
Vol 100 ◽  
pp. 00059
Author(s):  
Michał Oktawiec ◽  
Marcin Wdowikowski ◽  
Bartosz Kaźmierczak ◽  
Janusz Zaleski ◽  
Paweł Licznar
Keyword(s):  
Storm Water ◽  
Separation Procedure ◽  
Water Drainage ◽  
Peak Over Threshold ◽  
Selection Of

In this paper selection of maximal precipitation amounts for Polish Atlas of Rains Intensities (PANDa) has been presented. PANDa supposes to be the source of actual and indisputable information about reliable rainfall intensities for designing of storm water drainage and retention systems in Poland. During the realization of the maximum amounts separation procedure, for chosen 100 meteorological stations with the use of peak over threshold (POT) method, a number of problems has been found, for which proceeding algorithms have been described.

scholarly journals Parametric Study of an Organic Rankine Cycle Using Different Fluids

2020 ◽  
Vol 4 (2) ◽  
pp. 122-128 ◽  
Author(s):  
Rabah Touaibi ◽  
Hasan Koten ◽  
Ozlem Boydak
Keyword(s):  
Mechanical Energy ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Operating Conditions ◽  
Cycle Performance ◽  
Heat Sources ◽  
Molecular Weights ◽  
Volatile Organic ◽  
Organic Fluids ◽  
Selection Of

This work is an energy study of an organic Rankine cycle (ORC) for the recovery of thermal energy by comparing three organic fluids. This cycle is considered to be a promising cycle for the conversion of heat into mechanical energy suitable for low temperature heat sources; it uses more volatile organic fluids than water, which generally has high molecular weights, thus allowing operating pressures at temperatures lower than those of the traditional Rankine cycle. A thermodynamic model was developed using the Engineering Equation Solver (EES) software to determine its performance using different working fluids (toluene, R245fa and R123) under the same operating conditions, taking into account the effect of certain operating parameters and the selection of organic fluids on cycle performance. The results obtained show that the toluene organic fluid has the best thermal efficiency of the cycle compared to the other fluids; 14.38% for toluene, 13.68% for R123 and 13.19 for R245fa.

scholarly journals Planform Geometry and Excitation Effects of PVDF-Based Vibration Energy Harvesters

Energies ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 211
Author(s):  
Jie Wang ◽  
Mostafa R. A. Nabawy ◽  
Andrea Cioncolini ◽  
Alistair Revell ◽  
Samuel Weigert
Keyword(s):  
Mechanical Energy ◽  
Low Frequency ◽  
Excitation Amplitude ◽  
Systematic Investigation ◽  
Vibration Energy ◽  
Energy Harvesters ◽  
Future Design ◽  
Linear Effects ◽  
Selection Of ◽  
Piezoelectric Vibration

In the present paper, we report a systematic investigation of planform geometry and excitation level effects on the dynamics and power generation characteristics of polyvinylidene difluoride (PVDF)-based cantilevered vibration energy harvesters. Piezoelectric vibration energy harvesters provide a promising energy harvesting solution for widespread use of wireless sensors in remote locations. Highly flexible PVDF polymers offer resonant frequencies at suitable range for harvesting mechanical energy within low-frequency applications, though information on the efficient sizing of these devices is currently limited. We test the response of a set of eight harvesters to typical vibration sources excitation levels in the range 0.2–0.6 g. This set comprises four widths and two lengths, incrementing each time by a factor of two. The selected range of dimensions is sufficient to identify optimal power output versus width for both lengths tested. This optimal width value depends on excitation amplitude in such a way that narrower harvesters are more suited for small excitations, whereas wider harvesters perform better upon experiencing large excitations. Non-linear effects present in longer harvesters are demonstrated to significantly reduce performance, which motivates the selection of planform dimensions inside the linear range. Finally, we explore the correlation of performance with various geometric quantities in order to inform future design studies and highlight the value of using the second moment of planform area to measure harvester efficiency in terms of power density. This points towards the use of harvesters with non-rectangular planform area for optimal performance.

scholarly journals Estimation and Evaluation of Mexiletine for Bio-availability and Bio-equivalence studies by Liquid phase extraction using LC-MS/MS

2021 ◽  
Vol 12 (2) ◽  
pp. 1478-1483
Author(s):  
Elavarasi E ◽  
Binoy Varghese Cherian ◽  
Shanmugasundaram P ◽  
Vijey Aanandhi M
Keyword(s):  
Mass Spectrometry ◽  
Extraction Procedure ◽  
Internal Standard ◽  
System Stability ◽  
Separation Procedure ◽  
Liquid Chromatography Mass Spectrometry ◽  
Nitrogen Gas ◽  
Working Standard ◽  
Mass Spectrometry Mass Spectrometry ◽  
Selection Of

The work aims to develop an appropriate method for mexiletine with 35-65% recovery by the LPE method with efficient and selective efficacy of the IS and analyte for the analysis under Liquid Chromatography-Mass Spectrometry/ Mass Spectrometry. This method also reveals the bio-availability and bio-equivalence report for Internal Standard & working standard. At first, the selection of proper IS. The Internal standard should be structurally more similar to mexiletine. The selection of method plays a major role in which extraction procedure is done either by LPE or SPE. The selection of separation procedure should be either isocratic or gradient. Selection of column on bases separation principle of the compound. Since separation is the major principle for chromatography. Argon and Nitrogen Gas is used as carries with a flow-rate of 2L min. Temperature at 20°C, the pressure at 20psi. If the instrument doesn't show any peak or response in after loading sample, check the columns is an aqueous or reverse-phase and then submit the sample. Check all the solution and column and temperature and system stability before loading the sample. After loading the sample, must form calibration curve it must form linearity. The method found should possess the following parameters Specific & Selectivity, Precision & Accuracy. The work aims to develop a simple, elegant way for quantification of a molecule and the method determined will have recovery of 35-65% worldwide. This quantification will be further utilized in Full-Method Validation.

Selection of Hot Plastic Deformation Regimes for Large Workpieces According to Mechanical Energy Distribution Criteria

Metallurgist ◽  
2020 ◽  
Vol 64 (7-8) ◽  
pp. 709-715
Author(s):  
B. K. Barakhtin ◽  
S. N. Petrov ◽  
K. A. Okhapkin ◽  
Yu. M. Markova ◽  
E. A. Vasil’eva
Keyword(s):  
Plastic Deformation ◽  
Energy Distribution ◽  
Mechanical Energy ◽  
Hot Plastic Deformation ◽  
Selection Of

scholarly journals INFLUENCE OF DIFFERENT ASSORTMENT OF TWO-BALL GRINDING LOAD ON THE PERFORMANCE OF AN OPEN-CYCLE BALL MILL

2021 ◽  
Vol 6 (5) ◽  
pp. 63-70
Author(s):  
I. Borisov ◽  
A. Stronin
Keyword(s):  
Ball Mill ◽  
Mechanical Energy ◽  
Chemical Properties ◽  
Grinding Process ◽  
Fine Grinding ◽  
Grinding Media ◽  
Physical And Chemical ◽  
Selection Of ◽  
Rational Composition ◽  
And Chemical Properties

The ball mill has an energy efficiency of no more than 3.5 % (taking into account the measures taken to intensify the process of grinding the material). This is due to the imperfection of the design of the grinding unit, which consists in the fact that it is impossible to completely convert the mechanical energy accumulated by the grinding load into grinding energy (i.e., energy directly spent on the destruction of material particles). Most of the stored energy is converted into heat, noise, and vibration. The existing directions of intensification of the grinding process are as follows: improvement of the design, internal equipment of the cement mill; changes in the physical and chemical properties of the grinding medium; improvement of the grinding scheme. The authors of this article work in the direction of improving the internal equipment, which is reflected in the scientifically based selection of the range of grinding media for the fine grinding chamber, since the rational composition of the grinding load can significantly reduce the energy consumption of the grinding process. The authors continue to study the possibility of using a two-ball loading in a fine grinding chamber. This article provides a brief overview of the different ranges of two-ball grinding loadings, which differ from each other only in the range of grinding media. The possibility of a significant increase in the productivity of the mill when replacing the traditional grinding load with a rational two-ball is shown

Sign in / Sign up

Export Citation Format

Share Document