Vol. 52 No. 4 (2015)   New Products & Technologies
Technical Papers

"ETI-Z Series" Centrifugal Chiller Applied Low GWP Refrigerant to Contribute to the Prevention of Global Warming

KENJI UEDA
YOSHINORI SHIRAKATA
YASUSHI HASEGAWA
NORIYUKI MATSUKURA
NAOYA MIYOSHI
JUN KOGA

In recent years, Mitsubishi Heavy Industries, Ltd. (MHI) has contributed to the prevention of global warming by improving the performance of centrifugal chillers. In addition, centrifugal chillers adopting HFO-1233zd(E), which features the global warming potential equal to carbon dioxide, were developed and launched as the ETI-Z series in September 2015 to help prevent global warming directly caused by refrigerant emission. HFO-1233zd(E) has a volume of refrigerant gas about five times as large as that of the conventionally used refrigerant HFC-134a, but the newly-developed centrifugal chillers were designed with a compact size equivalent to the conventional product using HFC134a. In addition, high performance was achieved with a 3% increase in rated performance.