To prevent global warming, refrigeration and air conditioning equipment is required to replace current refrigerants with those with low global warming potential (GWP) to achieve a reduction in GWP. Mitsubishi Heavy Industries Thermal Systems Ltd. has developed the HCCV2001M, a large-capacity 20-horsepower condensing unit following the 10-horsepower HCCV1001, both of which adopt natural refrigerant CO2 with a GWP of 1 as an alternative to fluorocarbon refrigerants R404A (GWP3920) and R410A (GWP2090), which are the mainstream refrigerants used in commercial condensing units. This larger capacity was established by using two Scroll and Rotary compressors, which expanded the capacity range while accommodating the components in a cabinet the same size as that of the HCCV1001. As a result, the installation flexibility was ensured. This paper describes the technological issues and applied technologies of this product.
