Modine has won another in a series of contracts with the U.S. Army's Research, Development and Engineering Command to continue developing alternative HVAC systems that use transcritical carbon dioxide (CO2) technology for military vehicles.

The contract supports Modine's work in its ongoing development of environmental control unit and vehicular HVAC systems to provide air conditioning and heating using CO2 refrigerant for military vehicles and Army tent enclosures. The $1.8 million contract is scheduled to be completed over a 12-month period.

The alternative HVAC systems using CO2 provide advantages over those using R134a refrigerant. Because CO2 is a natural refrigerant, it poses no threat to the environment if it leaks into the atmosphere. It releases no harmful hydro-fluorocarbon gases, and it is non-toxic, non-flammable and has the highest safety rating established by commercial standards.

The contract will enable Modine to conduct technology demonstrations that will establish the system's ability to function well under extreme military-type severe conditions. The Modine CO2 refrigeration system tends to be smaller and lighter than traditional R134a systems and it leads to increased cargo-carrying capacity on military vehicles.

For more information, visit www.modine.com.