Various measures against global warming have been undertaken in the industrial world. Concerning commercial condensing units, it is necessary to promote the adoption of refrigerant with a low global warming potential (GWP). Mitsubishi Heavy Industries Thermal Systems, Ltd. has developed the "HCCV1001" commercial condensing unit using CO2 as a natural refrigerant with a GWP of 1. In this condensing unit, the refrigerant flows in the medium-pressure range, facilitating the reduction of the piping design pressure, a wide range of evaporating temperatures and operating ambient temperatures and allows the unit to be installed with a long pipe. This paper describes the technological features of the HCCV1001.
