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Possibilities of application of thermoelectric generators for increasing the energy efficiency cement industry of Uzbekistan
https://doi.org/10.15518/isjaee.2021.09.182-190
Abstract
The volume of waste heat from cement plants in Uzbekistan has been estimated and it has been found that it is more than 6.8 billion kWh per year.
Methods and devices for converting waste heat into electricity at cement plants, their advantages and disadvantages have been studied. It was found that a thermoelectric generator (TEG) is the most suitable for these purposes. It is shown that the existing methods (ORC, TEG with an efficiency of about 20%) from the waste heat of cement plants can produce up to 1.47 billion kWh of electricity per year, satisfying the needs of these plants for electricity, saving fuel and reducing energy pollution of the environment.
The values of the dimensionless thermoelectric figure of merit ZT = 3.6 and 5-6 achieved in new materials show that TEG is already becoming not only competitive against traditional electromechanical devices, but can also surpass them in durability, reducing the volume of maintenance and repair, cheaply and effectively converting waste heat, saving fuel and contributing to a better environment.
The composition of minerals in Uzbekistan has been studied as raw materials for cheap, safe and sufficiently effective thermoelectric materials. It has been established that there are a number of mineral deposits that are promising for these purposes, but their thermoelectric properties have not been studied.
About the Authors
G. Abdurakhmanov
National University of Uzbekistan named after Mirzo Ulugbek
Uzbekistan
Uzbekistan
Gulmurza Abdurakhmanov, DSc in physics and mathematics, professor
ph.: +998935565714
University St., Tashkent 100174 Uzbekistan
A. S. Esbergenova
National University of Uzbekistan named after Mirzo Ulugbek
Uzbekistan
Uzbekistan
Amugul S. Esbergenova, Senior re-search scientist
ph.: +998909542618
University St., Tashkent 100174 Uzbekistan
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Review
For citations:
Abdurakhmanov G., Esbergenova A.S. Possibilities of application of thermoelectric generators for increasing the energy efficiency cement industry of Uzbekistan. Alternative Energy and Ecology (ISJAEE). 2021;(25-27):182-190. (In Russ.) https://doi.org/10.15518/isjaee.2021.09.182-190
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