39 Watt Peltier Plate Cooler Electrical Cooling Plate 4A Stable Current
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Detailed Product Description
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39 Watt Peltier Plate Cooler Electrical Cooling Plate 4A Stable Current
• The thermoelectric effect is the direct conversion of
temperature differences to electric voltage and vice-versa. –A thermoelectric device creates a voltage when a temperature
difference is applied to it. –Conversely, when a voltage is applied to it, it creates a
temperature difference.
• Pros: –Unlike common heat pumps (compression/expansion-based and Stirling
cycle), these devices have no moving parts and work in any
orientation • simple, reliable, compact, low mass, and noiseless,
vibration-less operation. –Less maintenance - more than 100,000 hours of life for steady
state operation –Function in environments that are too severe, too sensitive, or
too small for conventional refrigeration –Contains no chlorofluorocarbons or other materials which may
require periodic replenishment • Temperature control to within fractions of a degree using
appropriate support circuitry. –Low thermal mass and fast response time of TECs, when combined
with an appropriate control loop, can provide precise temperature
control. In relatively stable thermal sink environments, TECs
achieve 0.01°C temperature stability. Such extreme stability is
difficult to achieve by other means. –The direction of heat-pumping is fully reversible. Changing the
polarity of the DC power supply causes heat to be pumped in the
opposite direction, i.e.- a cooler can become a heater. –Temperature differences: • for a hot side around room temperature, temperature differences
of about 72°C and 125°C can be achieved by single-stage and
multistage TECs, respectively. • In situations where the object being cooled generates little or
no heat the combination of TE cooling and thermal insulation can
produce large temperature differences. • • Cons: –structural integrity of bismuth telluride and soldered joints when
subjected to differential thermal expansion stresses. –relatively low COP, particularly with large temperature
differences. • this can be acceptable when the heat load is small. • best suited to situations with modest heat loads, cold
temperatures not below 150°K, and hot-to-cold-side differences not
exceeding 100°C. • not recommended for use below 130°K because of their
prohibitively low efficiencies.
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| Product Tags: thermoelectric cold plate electrical cooling plate | |||||||||||||||||||||||||||||
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