Balance of energy and coefficient of efficiency of aluminium air chemical current sources for aviation and space industries

Aerospace propulsion engineering


Аuthors

Okorokova N. S.*, Pushkin K. V.**, Sevruk S. D.***, Farmakovskaya A. A.****

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: ok.nadezhda@mail.ru
**e-mail: konstantin-val@yandex.ru
***e-mail: sds46@yandex.ru
****e-mail: a.a.farmakovskaya@gmail.com

Abstract

This paper shows the estimated characteristics of electrochemical system based on oxygen acts as the oxidizer and the various most effective reducers or fuels.
This work displays that the oxygen-aluminium system is most effective and promising to developed the electrochemical current sources (CSS) with high energy characteristics. In terms of theoretical value of energy density it trails only oxygen-hydrogen and oxygen- lithium systems.
A mechanical rechargeable CCS with the aluminum anode (Aluminum-Air (AA) with an alkaline solution) is purposed for independent power supply for different techniques include aviation and space, for example the emergency power supply and for power supply the objects distant from the electric network.
We provide the calculation of the energy characteristics for the AA CSS namely: the energy balance and the coefficient of efficiency.
The energy balance is presented in form of the Sankeys diagram. It was accepted that the current forming reaction and the corrosion reaction are simultaneously run on the aluminum anode in alkaline solution and both of these reactions have a staging character. The thermal effects of all of these reactions were calculated and all possible mechanisms of the heat dissipation were shown.
With purpose to form the estimated formulae of the coefficient of efficiency we have examined the mechanism of the chemical reactions in AA CSS and have used the polarization curves. This paper is the first to show that the formula for calculation the coefficient of efficiency is substantially different to the traditional one which is used now for CCS.
The energy characteristics of AA CSS help to development the constructional characteristics and the optimal parameters of the independent power supply systems for aviation and others technique.

Keywords:

aluminium, electrochemical cell, power characteristics, electric power plant, power plant energy balance

References

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  2. Alashkin V.M., Sevruk S.D., Udaltsov V.G., Farmakovskaya A.A. Elektrokhimicheskaya energetika, 2006, vol.6, no. 3, pp. 156-159.
  3. Korovin N.V. Elektrokhimicheskaya energetika (Electrochemical energy), Moscow, Energoatomizdat,1991, 215 p.
  4. Bessonov L.A. Teoreticheskie osnovy elektrotekhniki. Elektricheskie tsepi (Electrochemical foundations of electro technique. Electric circuits), Moscow, Gаrdariki, 2002, 638 p.

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