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公开(公告)号:US20190390878A1
公开(公告)日:2019-12-26
申请号:US16489622
申请日:2018-06-28
发明人: Ryosuke SUEMITSU , Kenji UEDA , Yasushi HASEGAWA , Kazuki WAJIMA , Yoshinori AKAMATSU , Fuyuhiko SAKYU , Kanako OSAFUNE
摘要: It is an object of the present invention to provide a heat pump that can use, as a refrigerant, a substance with which a geometric isomer exists, and a method for designing the same. The present invention is a method for designing a heat pump (1) whose closed circuit configured by connecting a compressor (2), a condenser (3), an expansion valve (4), and an evaporator (5) in this order is filled with a refrigerant containing a refrigerant substance with which a geometric isomer may exist, the method including obtaining an upper limit of stable temperature at which isomerization of the refrigerant substance does not proceed, and setting an upper limit usage temperature of the heat pump (1) so as not to exceed the upper limit of the stable temperature.
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公开(公告)号:US20180347860A1
公开(公告)日:2018-12-06
申请号:US15780844
申请日:2017-02-09
发明人: 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
摘要: 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. or more.
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