Air-to-Air Outdoor Cooler From Laird Cools Mobile Base Stations and Cell Towers at a Lower Cost

The AA-480 Series outdoor cooler uses less energy and takes up less space compared to similar units on the market…

March 23, 2016 – Laird Thermal Systems has developed an air-to-air outdoor cooler that protects critical telecommunication cabinets, energy storage systems and back-up battery systems by providing greater cooling power and increased reliability versus other units currently on the market. The AA-480 Series thermoelectric cooler assembly delivers long life operation, maximum uptime and lower cost of ownership. Ideal for new and retrofit mobile base station and cell tower projects, the small, energy efficient AA-480 Series can replace bulky, more expensive cooling units — lowering operating costs and saving time on maintenance.

When the power to a cellular antenna tower goes out, emergency batteries provide power for up to six hours. But battery life is significantly reduced by exposure to temperatures outside the optimal range. Long life operation is required in wireless base station and cell tower applications to maximize uptime and maintain low cost of ownership. The AA-480 Series can operate for much longer with less power consumption than previously designed thermoelectric based cooling units, ensuring more reliable cellular coverage during power outages.

With 480 Watts of cooling power and a Coefficient of Performance (COP) rating of 1, the AA-480 Series thermoelectric cooler assembly has nearly 50% more efficiency than standard air-to-air units offered today. This saves installation and maintenance costs for users as well as space inside mobile base station and cell tower cabinets.

The AA-480 Series thermoelectric cooler assembly has been designed to pass rigorous Telcordia test requirements for outdoor environments, and the gaskets, connectors and fans provide a NEMA 4 seal for the enclosure. With a wide operating temperature range of -40°C to +55°C and robust, steady-state construction, the AA-480 outdoor cooler is tested up to 100K power cycles.

“The AA-480 Series outdoor cooler assembly uses less energy and takes up less space compared to similar units,” said Anders Kottenauer, Senior Vice President of Laird's Engineered Thermal Systems Business. “Our AA-480 Series also requires less maintenance, cutting the total cost of ownership as well as the time spent traveling to and from these sometimes remote locations. In addition, the cooler improves the reliability
of cellular coverage, keeping people connected during a power outage by protecting the emergency batteries used in wireless base stations.”

The AA-480 Series outdoor thermoelectric cooler assembly uses impingement flow to transfer heat. It offers dependable, compact performance by cooling objects via convection.

Key System Features:
• Input power accommodates a nominal/float voltage of 24/28 or 48/56 VDC
• Environmentally friendly solid state operation with no CFC refrigerants
• Fans can be controlled for reduced noise
• Cooling and heating in the same unit to maintain compact form factor.

The AA-480 Series complements the Laird product family of outdoor coolers for harsh applications but can also be easily retrofitted as a substitute for compressor based air conditioners used in medical diagnostic and analytical instrumentation for cooling and heating applications where maximizing system uptime is required.

For more information on the AA-480 Series outdoor cooler visit