SITE MAP



IMMERSION COOLERS & PELTIER THERMO-ELECTRIC APPLIANCES


Prototype Design & Development of Peltier White Goods and Leisure Appliances
Immersion Coolers, Laboratory Coolers and Cooling Module Applications
Design and Prototyping of Seebeck-Peltier Thermoelectric Coolers


Description

Voltage potential across two dissimilar semi-conductors creates a temperature difference between them caused by electron diffusion, which is properly called the Peltier-Seebeck Effect. Arrays of semi-conducting pairs are typically manufactured as wafer-thick modules in sizes of up to around 60mm square and 6mm deep, that may contain up to 287 junctions

Performance Perspective

Coefficient of Performance - CoP - generally varies between 0.3 and 0.7 according to circumstance. This is ratio of cooling effect against power supplied. Although in contrast, thermodynamic cycles might return CoPs of around 3.0 across corresponding temperature gradients, Peltier devices enable applications that could not otherwise be contemplated.

Electrical power may be obtained by heating one side of an array and cooling the other, and some Peltier modules are specifically designed for that purpose. Efficiencies are low, with generation capacity seldom exceeding 4W. They have a finite longevity, usually lasting less than ten or twelve years. Their use is mainly confined to exotic applications such as long range spacecraft systems. Even where efficiency is not of particular importance, cost factors compare unfavourably with other methods of heat-to-power conversion.

Applications

Natural environments for Peltier devices are circuit boards and other small, confined spaces. Cost, power consumption, and temperature differentials act as constraints upon domestic and personal applications. Whilst expectations must be tempered with realism where heavy cooling loads meet high ambients, Dove Thermal has produced many successful consumer products on clients' behalf. These include a table-top wine cooler, a chill box with freezer compartment, a cooling jug, and various immersion coolers.