Publication number: 20180347860
Abstract: An object of the present invention is to provide a heat source machine that can reduce the environmental load and can output the thermal energy with high temperature, and a method for operating the heat source machine. A heat source machine of the present invention includes a centrifugal compressor, condensers, expansion valves, and an evaporator, in which a refrigerant enclosed in a refrigerant circulation circuit configured by sequentially connecting the centrifugal compressor, the condensers, the expansion valves, and the evaporator contains a composition A, a composition B, or a composition C, the composition A has 4 or 5 carbon atoms, 6 or more fluorine atoms, and one or more oxygen atoms, the composition B has 4 or 5 carbon atoms and 6 or more fluorine atoms, the composition C has 3 carbon atoms, 2 chlorine atoms, 3 fluorine atoms, and an intramolecular double bond, and the composition A, the composition B, or the composition C has a boiling point of 20° C. or more and a critical temperature of 180° C.
Type:
Application
Filed:
February 9, 2017
Publication date:
December 6, 2018
Applicants:
MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., CENTRAL GLASS COMPANY, LIMITED.
Inventors:
Kazuki WAJIMA, Noriyuki MATSUKURA, Kenji UEDA, Naoki KOBAYASHI, Ryosuke SUEMITSU, Yoshinori AKAMATSU, Fuyuhiko SAKYU, Kanako OSAFUNE, Masanori TAMURA, Hiroyuki SUDA, Junji MIZUKADO, Kenji TAKIZAWA, Liang CHEN, Heng-dao QUAN