Thermo King launches carbon dioxide cooling

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Thermo King has patented a cryogenic cooling system, Green CryoTech, which uses recycled liquid carbon dioxide as a coolant.

Two systems have been developed: the CO2 Hybrid, which can be fitted to a conventional diesel-powered truck cooling system to supplement the pull-down capability; and the ST-CR which provides systems for both single and multi-temperature truck operations. There is also a multi-temperature trailer system in development.

Thermo King says the carbon dioxide technology is not the only cryogenic system but  it provides airflow in the load space, which is essential for fresh produce, and exhausts the cryogen outside the load space.

The Green CryoTech units do not allow CO2 to enter the cargo area unlike other systems that inject liquid coolant directly into the cargo area.

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