Thursday, July 18, 2024

Thermoelectric Coolers Suitable For Active Cooling In High Temperatures

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  • Laird Thermal Systems’ thermoelectric module series have cooling capacity that allows optoelectronic devices to maintain their operating temperature
  • Its robust construction enhances performance and has a high coefficient of performance (COP)

Laird Thermal Systems has developed a thermoelectric module series, the HiTemp ETX that is rated for high temperature (up to 150 degrees Celsius) in emerging optoelectronic applications.

Many temperature-sensitive optoelectronic devices require active cooling to stay below their maximum operating temperature in outdoor environments. Common applications include LiDAR and CMOS sensors for autonomous systems in vehicles and drones, digital light processors (DLP) used in 3D machine vision and advanced lighting systems, and optical transceivers.

Effective temperature maintenance

The thermoelectric cooler series has a robust construction and is built with advanced thermoelectric materials that boost cooling capacity by up to 10 per cent. It has solid-state heat pumps that feature a high thermal insulating barrier when compared to standard thermoelectric materials to create a maximum temperature differential (ΔT) of up to 83 degrees Celsius.

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The enhanced thermoelectric materials along with a robust construction prevent performance degradation in high-temperature environments. The HiTemp ETX Series maintains a high coefficient of performance (COP) for minimising the amount of input power required to operate and reduces the heat rejection requirement to the hot side, a critical aspect in poor heat sinking applications.

“We are seeing a lot of innovation in the market place where highly sensitive optoelectronics are getting specified into outdoor applications with worst-case temperatures exceeding 90 degrees Celsius,” said Andrew Dereka, Product Director at Laird Thermal Systems. “This is a problem for these devices as they are not designed to operate at these temperatures and engineers are creatively figuring out ways to spot cool in these environments using thermoelectrics.”

The HiTemp ETX Series is available in over 50 models covering various footprints, cooling capacities, voltage ranges and finishing options.


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