Abstract
The possibilities of constructing two-stage high-reliability thermoelectric devices using the same combinations of parameters of raw materials in stages with equal efficiency at the series electrical connection of the stages were considered. The calculation data of the basic reliability parameters and indicators of the two-stage thermoelectric device using different combinations of parameters in stages for temperature changes from 60K to 90K and operation modes: maximum cooling capacity, maximum cooling capacity at a given current, maximum coefficient of performance, minimum failure rate were given. It was proved that the approach to the thermocouple material selection by average efficiency, electrical conductivity and thermal conductivity indicators, adopted in the industrial production of thermoelectric modules is not optimized in terms of reliability of thermoelectric modules. As a result of the analysis of reliability indicators of thermoelectric cooler for different combinations of parameters of raw materials, the possibility of increasing the probability of failure-free operation by more than 10% for all operation modes was revealed. It was shown that an increase in thermoelectric cooling capacity in stages increases the cooling capacity or decreases the number of thermocouples, which together with the use of raw materials with high electrical conductivity allows to reduce the total failure rate and increase the probability of failure-free operation of two-stage devices.
Highlights
ВведениеАнализ мирового рынка термоэлектрических модулей [1] демонстрирует непрерывный рост и расширение области использования от специальных приложений до медицины, компьютерной техники, автомобилестроения, холодильного оборудования, кондиционирования и т. п. [2, 3]
At this time one of the most promising directions of lime production is modernizing production using cyclone furnace for annealing finely dispersed limestone
This technology can significantly increase the production of a product
Summary
Анализ мирового рынка термоэлектрических модулей [1] демонстрирует непрерывный рост и расширение области использования от специальных приложений до медицины, компьютерной техники, автомобилестроения, холодильного оборудования, кондиционирования и т. п. [2, 3]. Наряду с несомненными преимуществами: высокой надежностью, отсутствием движущихся частей, малыми инерционностью и массогабаритными параметрами, термоэлектрические охлаждающие устройства обладают более низкой холодопроизводительностью по сравнению с компрессионными системами [4], что и определяет область их рационального использования
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