POWER, METALLURGICAL AND CHEMICAL MECHANICAL ENGINEERING FLOW TYPE THERMOELECTRIC HEAT TRANSFER INTENSIFIER
https://doi.org/10.21822/2073-6185-2017-44-2-68-76
Abstract
Objectives. The aim of the study is to develop a construction design that increases the intensity of heat exchange between media and optimises the energy and mass dimensions of the instrument indicators.
Methods. A method for the theoretical investigation of thermoelectric heat transfer intensifiers is used, which, by means of forced air flows along the junctions of thermoelements, provides a higher coefficient of heat exchange between media moving in transport zones with altering temperature.
Results. The construction of a thermoelectric heat transfer intensifier is proposed, which uses fan assemblies to force air flow in the respective gaps between the junctions of the thermoelements and the media moving in transport zones to increase the heat transfer coefficient. A device model based on the solution of the heat balance equations for media flows in transport zones, thermoelectric battery surfaces and gaps between transport zones and battery surfaces for direct flow conditions is considered. Theoretical studies of the heat transfer intensifier using the developed model were carried out. The dependencies of the media temperature alterations at the output of the heat transfer intensifier on the value of the heat transfer coefficient between the junctions of the thermoelectric battery and the air medium in the gap are determined for a fixed value of the thermoelectric battery supply current equal to 5 A.
Conclusion. It is established that an increase in media temperature difference at the input contributes to a sharper decrease in the dependencies of the limiting lengths of the thermoelectric battery on the heat transfer coefficient between the junctions of the thermoelectric battery and the air medium in the gap at a constant supply current.
About the Author
D. K. Kadirova
Daghestan State Technical University
Russian Federation
Russian Federation
aspirant, Department of Theoretical and General electrical engineering,
70 I. Shamilya Ave., Makhachkala 367026References
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For citations:
Kadirova D.K. POWER, METALLURGICAL AND CHEMICAL MECHANICAL ENGINEERING FLOW TYPE THERMOELECTRIC HEAT TRANSFER INTENSIFIER. Herald of Dagestan State Technical University. Technical Sciences. 2017;44(2):68-76. (In Russ.) https://doi.org/10.21822/2073-6185-2017-44-2-68-76
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