He developed the modern thermodynamic transcritical cycle in 1988 - 1991 .
In the late 1980s , Gustav Lorentzen rediscovered how CO could be used as a refrigerant in heating and cooling applications .
Gustav Lorentzen developed the modern thermodynamic transcritical cycle in 1988 - 1991 .
In the late 1980s , Gustav Lorentzen rediscovered how CO could be used as a refrigerant in heating and cooling applications .