Laird Thermal Systems offers thermoelectric alternative to compressor systems

A liquid-to-air thermoelectric cooler assembly offers an environmentally friendly alternative to compressor-based systems for the refrigeration of medium to large chambers.

The SuperCool Series SLA-400 is the latest addition to the SuperCool series by Laird Thermal Systems. It is a high capacity, liquid-to-air thermoelectric cooler assembly with 400W of cooling power. The SuperCool Series SLA-400 thermoelectric assembly provides a refrigerant-free alternative to compressor-based systems. It enables OEMs to meet strict environmental regulations that ban the use of hazardous refrigerants from depleting the ozone layer.

It refrigerates medium to large medical diagnostic chambers. It is designed to control the temperature of a liquid circulating loop, and is claimed to provide the highest cooling capacity in the industry for a cooler assembly of its size.

The thermoelectric cooler is compact, measuring 174 x 174 x 291mm. It uses the Peltier effect to cool well below ambient temperatures. Solid-state thermoelectric coolers are optimised to pump heat to an integrated, high-performance heat exchanger assembly that dissipates heat more efficiently than conventional heat exchanger technologies, explains Laird Thermal.

An insulation barrier protects against condensation penetrating into the thermoelectric module cavity for applications that go below dew point. The SLA-400 uses custom thermoelectric coolers to maximise cooling capacity and premium grade fans to reduce noise. The unit operates on 24V DC and is designed for indoor lab use environment.

Liquid-to-air units offer options where space is limited by allowing the cooling unit to be moved to a location that is typically away from the centre of the diagnostic instrument where temperatures can get warm from surrounding electronics and which have limited access to fresh air. Moving the cooling unit closer to the inlet air vent allows for better heat transfer with the surrounding environment, explains Laird.

“New medical diagnostic systems have less space available to accommodate a localised thermoelectric assembly for chamber cooling,” said Andrew Dereka, product director at Laird Thermal Systems. “The SLA-400 frees up space directly beneath a chamber for electronics or allows for double stacking of chambers to reduce the overall size of a diagnostic system.”

Custom configurations are available upon request.

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