Vol. 54 No. 2 (2017)   Air-Conditioning & Refrigeration
Technical Papers

Development of "HCCV1001" Commercial Condensing Unit Employing CO2 as Natural Refrigerant

HISAO MIZUNO
KENICHI MURAKAMI
AKIO KAWANISHI
KENTA ICHIGAYA
MASAKI IKEDA
ATSUSHI ENYA

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.