Peltier coolers reduce in size

June 26, 2019 //By Nick Flaherty
Peltier coolers reduce in size
Laird Thermal Systems has launched three high performance ultra-compact thermal cooling assemblies using the Peltier effect.

The SuperCool Series of Peltier coolers is designed for applications that require high cooling capacities in tight space constraints such as chambers in medical diagnostics and sample storage compartments in analytical instrumentation. The smaller, refrigerant-free thermoelectric assemblies provide an environmentally friendly alternative to compressor-based systems for precise temperature control. 

The Peltier coolers give engineers with three heat transfer options on the control side. Heat can be absorbed via liquid, conduction or convection. The Liquid to Air unit is only 230 mm x 150 mm x 109 mm and offers a cooling capacity of 140W. The Direct to Air model is only 230 mm x 123 mm x 103 mm and has a cooling capacity of 130W and the Air to Air unit is 230 mm x 150 mm x 156 mm with a capacity of 110W. All cooling capacities are measured at ΔT=0°C and operate on a nominal voltage of 24 VDC. Custom configurations are available upon request.

Recent government regulations on the use of traditional and natural refrigerants critical to compressor-based systems make Peltier Cooling an appealing substitute. The compact SuperCool Series Peltier assemblies do not use refrigerants and instead use a unique hot side air heat sink design that dissipates heat more efficiently than conventional heat exchanger technologies. It uses customized Peltier modules that were specifically optimized to dissipate heat through the high-performance heat exchanger assembly. The expanded SuperCool Series of Peltier coolers transfers heat to air more rapidly and is also quieter than previous models. Moisture resistant insulation and proprietary barrier seal protection is used to keep condensation from penetrating into the thermoelectric cavity for applications that go below dew point.

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