Determination of the maximum cooling capacities of two-stage coolers with a variation in the geometry of branches in stages

Authors

DOI:

https://doi.org/10.15587/2312-8372.2017.105634

Keywords:

thermoelectric cooling device, geometry of the branch of thermoelements, maximum temperature drop, cooler designs

Abstract

A model of the relationship between the reliability indices of two-stage TECs of various designs with the geometry of the branches of thermoelements in cascades in the ΔTmax mode with electrical series of cascades (stages) is proposed and analyzed. Relations are obtained for determining the optimal geometry of the branches of thermoelements in cascades corresponding to the maximum temperature difference. The expression allows to estimate both the maximum cooling capacities and the reliability indices of two-stage thermoelectric cooling devices of various designs. The possibility of increasing the maximum temperature drop to 4 % is shown by choosing the optimal geometry of the branches of thermoelements in cascades (stages). This is achieved under the condition that the ratio of the length to the cross-sectional area of the elements of the first stage is greater than the ratio of the length to the cross-sectional area of the second stage, which differs from the traditional equality of these ratios for a given working current. The proposed approach makes it possible to estimate the maximum temperature drop and to predict the reliability indices of two-stage thermoelectric coolers of various designs for various operating conditions and to conduct an optimized design of radio electronic equipment using cascade thermoelectric cooling devices.

Author Biographies

Vladimir Zaykov, Research Institute «STORM», 27, Tereshkova str., Odesa, Ukraine, 65076

PhD, Chief of Sector

Vladimir Mescheryakov, Odessa State Environmental University, 15, Lvivska str., Odesa, Ukraine, 65016

Doctor of Technical Sciences, Professor, Head of the Department

Department of Informatics

Yurii Zhuravlov, National University «Odessa Maritime Academy», 8, Didrikhsona str., Odesa, Ukraine, 65029

PhD, Senior Lecturer

Department of Technology of Materials and Ship Repair

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Published

2017-05-30

How to Cite

Zaykov, V., Mescheryakov, V., & Zhuravlov, Y. (2017). Determination of the maximum cooling capacities of two-stage coolers with a variation in the geometry of branches in stages. Technology Audit and Production Reserves, 3(1(35), 4–10. https://doi.org/10.15587/2312-8372.2017.105634

Issue

Section

Mechanical Engineering Technology: Original Research