scholarly journals Energy Characteristics of a Combined Power Plant Based on a Hydronic Chemical Current Source

2019 ◽  
Author(s):  
ARIADNA FARMAKOVSKAYA ◽  
NADEZHDA OKOROKOVA ◽  
KONSTANTIN PUSHKIN ◽  
STANISLAV SEVRUK ◽  
ELENA SUVOROVA
Keyword(s):  
Power Plant ◽  
Current Source ◽  
Chemical Current Source ◽  
Energy Characteristics

Chemical Current Source Express Diagnostics Using Noise Spectroscopy on the Example of Lithium-Thionyl Chloride Battery

2021 ◽  
pp. 136-143
Author(s):  
E.M. Petrenko ◽  
V.A. Semenova
Keyword(s):  
Thionyl Chloride ◽  
Discharge Rate ◽  
Current Source ◽  
Mean Value ◽  
Spectroscopy Method ◽  
Discharge Process ◽  
Absolute Deviation ◽  
Chemical Current Source ◽  
Measurement Analysis ◽  
Noise Spectroscopy

Lithium-thionyl chloride battery voltage is practically not changing during the discharge process and drops sharply being completely discharged. In this regard, the problem of non-destructive quality control of the chemical current sources (first of all, the discharge degree) before installation thereof in the equipment becomes of particular importance. Microcalorimetric studies make it possible to rather correctly determine the current source internal self-discharge rate, predict the LCCS shelf life and its performance term. However, the heat release absolute value in current sources with sufficient storability, i.e., with low self-discharge, is very small; therefore, it is necessary to use sensitive, stationary and large-sized equipment. This makes such diagnostics impossible when operating in the stand-alone conditions. The impedance spectroscopy method could be proposed to solve this problem. However, satisfactory results are only obtained in the 0--70 % residual capacitance range. Determination of residual capacitance in the 70--100 % range appears to be rather difficult due to the absence of noticeable alteration in the informative parameter within the limits of its absolute deviation from the mean value. In this regard, it looks advisable to use noise spectroscopy as a physically independent method in diagnosing the state of chemical current sources to expand the residual capacitance diagnostics range to the 70--100 % domain, as well as to increase reliability of the chemical current source diagnostic estimate in the range of 50--70 %. Results of the electrochemical noise measurement analysis confirm promising application of the noise spectroscopy method in estimating current state of the primary chemical current sources in their low discharge domains

scholarly journals PURIFICATION OF ALKALINE ELECTROLYTE FROM DISSOLVED REACTION PRODUCTS DURING WORK OF THE AIR-ALUMINUM CHEMICAL CURRENT SOURCE

2019 ◽  
Vol 16 (33) ◽  
pp. 337-350
Author(s):  
N. S. OKOROKOVA ◽  
A. V. PERCHENOK ◽  
E. V. SUVOROVA ◽  
A. A. FARMAKOVSKAYA
Keyword(s):  
Current Source ◽  
Experimental Studies ◽  
Operating Conditions ◽  
Aluminum Concentration ◽  
Alkaline Electrolyte ◽  
Reaction Products ◽  
Chemical Current Source ◽  
Power Sources ◽  
Stage Of Development ◽  
Process Solutions

The relevance of the article is based on the fact that the state of work on the creation of power sources (PS) with AA chemical current sources (CCS) is at the stage of development and testing of prototypes. The purpose of this article is to calculate dimensions of the electrolyte circuit and the crystallizer. There were experimental studies of the decomposition kinetics of the process solutions of potassium aluminate in the range of temperatures and compositions corresponding to operating conditions with PS AA CCS for various purposes. This study presents the results of applying various methods of cleaning an alkaline electrolyte from dissolved reaction products formed during the operation of an air-aluminum (AA) chemical current source (CCS). The kinetic parameters of decomposition of aluminate solutions were experimentally determined, depending on temperature, the concentration of dissolved aluminum, concentration of initial aluminum hydroxide and the size of the first surface. The dimensions of the electrolyte purification systems from dissolved reaction products — electrolyte circuit and crystallizer — were calculated, which significantly increased the time continuous operation of power sources (PS) based on AA CCS. It was demonstrated that for a 100 W power supply, the crystallizer volume should be 1.3 l with initial concentration of 20 % of mass. The mass of water consumed during the operation of the PS for 6 hours is 1.4 kg.

scholarly journals Electromechanical transmission of tracked machine energy characteristics study

2021 ◽  
Vol 18 (1) ◽  
pp. 12-29
Author(s):  
V. N. Kuznetsova ◽  
R. V. Romanenko
Keyword(s):  
Power Plant ◽  
Internal Combustion Engine ◽  
High Efficiency ◽  
Combustion Engine ◽  
Fuel Efficiency ◽  
Internal Combustion ◽  
Operating Conditions ◽  
Maximum Speed ◽  
Tracked Vehicle ◽  
Energy Characteristics

Introduction. The use of an electromechanical transmission in the design of a tracked vehicle allows an increase in the complex indicator of mobility, an increase in the range, fuel efficiency, maximum speed, a decrease in acceleration time, etc. The improvement of these indicators is achieved mainly due to the different performance characteristics of the internal combustion engine and the energy characteristics of electrical machines. The latter fact makes it possible to ensure the operation of the power plant of the tracked vehicle in such a way as to avoid unfavorable operating modes of both the internal combustion engine and the elements of the electromechanical transmission (a generator, a traction electric motor, an energy storage) from the point of view of energy efficiency, and to realize the high efficiency of the entire system.Research methods. To improve the mobility and implement a rational strategy for electromechanical transmission control, it is necessary to have an idea of the effective modes of operation of the main elements of the power plant. As a way to solve this problem it is proposed to study the energy characteristics of the main elements of an electromechanical transmission using the developed mathematical model for various modes of movement of a tracked vehicle.Results. Modeling the motion of a tracked vehicle with an electromechanical transmission makes it possible, in addition to determining the transmission parameters, to formulate preliminary requirements for its characteristics.Discussion and conclusion. To solve these problems, it is necessary to simulate the process of movement of a tracked vehicle, taking into account the initial data that are adequate to real operating conditions.

Electroreduction of Cobalt(II) Chloride and Cobalt(II) Fluoride Mixtures in a Thermally Activated Chemical Current Source

2021 ◽  
Vol 2021 (2) ◽  
pp. 159-164
Author(s):  
O. V. Volkova ◽  
V. V. Zakharov ◽  
S. V. Plaksin ◽  
E. A. Il’ina ◽  
A. A. Pankratov
Keyword(s):  
Current Source ◽  
Chemical Current Source ◽  
Thermally Activated

Electrolytic Behavior of Nickel in Polarization by Variable Asymmetric Rectangular Current in Alkaline Solutions

2020 ◽  
Vol 299 ◽  
pp. 1010-1016
Author(s):  
V.V. Demiyan ◽  
E.A. Zelenskaya ◽  
N.P. Shabelskaya
Keyword(s):  
Experimental Data ◽  
Nickel Oxide ◽  
Current Source ◽  
Alkaline Solutions ◽  
Porous Nickel ◽  
Oxide Electrode ◽  
Chemical Current Source ◽  
Active Mass ◽  
Nickel Oxide Electrode ◽  
Anode Pulse

The paper presents experimental data on nickel oxidation during electrolysis under rectangular alternating current in alkaline solutions, when the cathode pulse (Iк ) is greater than the anode pulse ( Iа ). During the process, intense nickel destruction occurs forming bivalent oxide powder. Under prolonged electrolysis, this powder deposits at the bottom of the electrolyzer in the form of a sponge. The results obtained can be used to produce active mass in the porous nickel oxide electrode of a chemical current source.

scholarly journals Pengendali Putaran Turbin Pltmh Menggunakan Arduino

2020 ◽  
pp. 90-96
Author(s):  
Okta Andrica Putra
Keyword(s):  
Power Plant ◽  
Rotation Speed ◽  
Water Discharge ◽  
Current Source ◽  
Dc Motor ◽  
Dry Season ◽  
Maximum Power ◽  
Servo Motor ◽  
Hydro Power ◽  
Maximum Slope

Research has been carried out to regulate / control the rotation of the turbine for this type of micro hydro power plant (PLTMH). This research was carried out during the dry season where water discharge greatly affects turbine rotation. This tool utilizes an optocoupler sensor, servo motor and 2x16 LCD. This system works based on the turbine rotation speed that is read on the sensor then controls the slope of the water fall using a DC motor. If thewater speed is low, the servo motor will turn CW up to a maximum slope of 75 degrees to produce maximum rotation and maximum power. This research does not focus on the magnitude of the resulting current source and the amount of water discharge

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