RU2014120600A

RU2014120600A - COOLING DEVICE

Info

Publication number: RU2014120600A
Application number: RU2014120600/06A
Authority: RU
Inventors: Василий Иванович Бочегов; Александр Сергеевич Парахин
Priority date: 2014-05-21
Filing date: 2014-05-21
Publication date: 2015-11-27
Also published as: RU2576414C2

Abstract

Охлаждающее устройство, содержащее термоэлемент с n-ветвью из сплава Bi-Sb и пассивной p-ветвью из металла, размещенный в магнитном поле, отличающееся тем, что, с целью повышения термоэлектрической эффективности, n-ветвь выполнена с монотонно увеличивающейся по ее длине от горячего спая к холодному концентрацией сурьмы в сплаве, увеличение концентрации сурьмы может быть определимо по формуле:∇C=∇T·(E/T·δ),где ∇C - градиент концентрации сурьмы в сплаве, ат.%·см, E- среднее значение ширины зазора между валентной зоной и зоной проводимости n-ветви, мэВ, Т- температура горячего спая термоэлемента, К, ∇T - градиент температуры по n-ветви, К/см, δ - скорость нарастания ширины зазора между валентной зоной и зоной проводимости в сплаве с увеличением содержания сурьмы, мэВ/ат.%.A cooling device comprising a thermoelement with an n-branch made of a Bi-Sb alloy and a passive p-branch made of metal, placed in a magnetic field, characterized in that, in order to increase the thermoelectric efficiency, the n-branch is made with a monotonically increasing antimony concentration in the alloy along its length from the hot junction to the cold junction, the increase in the antimony concentration can be determined by the formula: ∇C = ∇T (E/T δ), where ∇C is the gradient of the antimony concentration in the alloy, at.% cm, E is the average value of the gap width between the valence band and the conduction band of the n-branch, meV, T is the temperature of the hot junction of the thermoelement, K, ∇T is the temperature gradient along the n-branch, K/cm, δ is the rate of increase in the gap width between the valence band and the conduction band in the alloy with an increase in the content antimony, meV/at%.

Claims

A cooling device containing a thermocouple with an n-branch of Bi-Sb alloy and a passive p-branch of metal, placed in a magnetic field, characterized in that, in order to increase thermoelectric figure of merit, the n-branch is made to increase monotonically along its length from hot subsiding to a cold concentration of antimony in the alloy, an increase in the concentration of antimony can be determined by the formula:

∇C = ∇T · (E _g / T _g · δ),

where ∇C is the concentration gradient of antimony in the alloy, at.% · cm ^-1 , E _g is the average value of the gap width between the valence band and the conduction band of the n-branch, meV, T _g is the temperature of the hot junction of the thermocouple, K, ∇T - temperature gradient along the n-branch, K / cm, δ — rate of increase in the width of the gap between the valence band and the conduction band in the alloy with an increase in the antimony content, meV / at.%.