Daikin Industries, Ltd.

Tomoyuki Gotou

Mitsushi Itano

Shun Ohkubo

Yuuki Yotsumoto

Yasufu Yamada

Akihito Mizuno

Daisuke Karube

Tatsumi Tsuchiya

Tatsuya Takakuwa

Masaru Tanaka

Hitomi Kuroki

Kenji Gobou

Eiji Kumakura

Kazuhiro Furusho

Takashi Usui

Takashi Kanemura

Tetsuhiro Kodani

Takashi Yoshimura

Satoshi Tokuno

Tetsushi Tsuda

Meiten Kou

Saori Inaba

Shinichi Fujinaka

An object is to suppress disproportionation in a refrigerant comprising HFO-1132(E). Provided as a means for a solution is a method for suppressing a disproportionation reaction of HFO-1132(E), the method comprising operating a refrigeration cycle using a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), trifluoroethylene (HFO-1123), and difluoromethane (R32).

Refrigerant-containing composition, use thereof, refrigerator having said composition, and method for operating said refrigerator

The present disclosure provides a composition comprising a refrigerant characterized by having a coefficient of performance (COP) and a refrigerating capacity equivalent to or higher than those of R404A, and having a sufficiently low GWP. Specifically, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)) and 2,3,3,3-tetrafluoropropene (HFO-1234yf), wherein HFO-1132 (E) is present in an amount of 35.0 to 65.0 mass %, and HFO-1234yf is present in an amount of 65.0 to 35.0 mass %, based on the total mass of HFO-1132 (E) and HFO-1234yf, and wherein the refrigerant is for use in operating a refrigeration cycle in which the evaporation temperature is −75 to −5° C.

Composition containing refrigerant, and refrigeration method using said composition, operating method for refrigeration device, and refrigeration device

Provided is a heat transfer composition comprising at least one iodocarbon compound and a refrigeration oil, and having a turbidity of 100 degrees or less as measured in accordance with JIS K0101 after stability testing. Also provided is a heat transfer composition comprising at least one iodocarbon compound and a refrigeration oil in which no hydrogen atom is bonded to a carbon atom or silicon atom in a main chain skeleton. These heat transfer compositions have significantly improved stability and are prevented from discoloration due to deterioration over time.

Heat transfer composition

No studies have been made regarding what kinds of refrigerants should be used in a refrigeration cycle device for a vehicle. An air conditioner () for a vehicle includes a refrigerant circuit () and a refrigerant that is sealed in the refrigerant circuit (). The refrigerant circuit () includes a compressor (), a first heat exchanger (), which serves as a heat dissipater in a dehumidifying heating mode, an outside-air heat exchanger (), a cooling control valve (), and a second heat exchanger (), which serves as an evaporator in the dehumidifying heating mode. The refrigerant is a refrigerant having a low GWP.

Refrigeration cycle device for vehicle

A showcase includes a refrigerant circuit and a refrigerant enclosed in the refrigerant circuit. The refrigerant circuit includes a compressor (), a radiator (), an expansion valve (), and an evaporator (). The refrigerant is a low-GWP refrigerant.

Refrigerant cycle apparatus

Provided is a method for producing a working medium containing difluoroethylene, the difluoroethylene not having self-decomposition properties. A method for producing a working medium containing difluoroethylene.

Method for producing hydraulic medium including difluoroethylene

The present disclosure provides a composition comprising a refrigerant characterized by having a coefficient of performance (COP) and a refrigerating capacity equivalent to or higher than those of R404A, and having a sufficiently low GWP. Specifically, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)) and 2,3,3,3-tetrafluoropropene (HFO-1234yf), wherein HFO-1132 (E) is present in an amount of 35.0 to 65.0 mass %, and HFO-1234yf is present in an amount of 65.0 to 35.0 mass %, based on the total mass of HFO-1132 (E) and HFO-1234yf, and wherein the refrigerant is for use in operating a refrigeration cycle in which the evaporation temperature is &#x2212;75 to &#x2212;5&#xb0; C.

The present disclosure provides a composition comprising a refrigerant that has characteristics of having a coefficient of performance (COP) and a refrigerating capacity equivalent to or higher than those of R404A, and having a sufficiently low GWP. More specifically, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (HFC-32), and 2,3,3,3-tetrafluoropropene (HFO-1234yf), wherein the total concentration of the three components is 99.5% by mass or more, based on the entire refrigerant, and three components have a mass ratio that falls within a region surrounded by a figure passing through the following 4 points in a ternary composition diagram whose three vertices represent the three components:

Composition containing refrigerant, refrigeration method using said composition, method for operating refrigeration device, and refrigeration device

The present disclosure is to provide a composition comprising a refrigerant that has the characteristics of having a sufficiently low GWP, and having a coefficient of performance (COP) and a refrigerating capacity equivalent to or higher than those of R404A. The present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), 1,1,2-trifluoroethylene (HFO-1123), and 2,3,3,3-tetrafluoropropene (HFO-1234yf), wherein the total concentration of the three components is 99.5 mass % or more, based on the entire refrigerant, and the three components have a mass ratio that falls within a region surrounded by a figure passing through the following 5 points in a ternary composition diagram whose three vertices represent the three components:

Refrigerant-containing composition, and refrigerating method, refrigerating device operating method, and refrigerating device using said composition

An object of the present invention is to provide a bimorph piezoelectric film that enables the production of touch panels and the like that are less influenced by pyroelectric noise due to temperature change, and exhibit high transparency. The present invention provides a bimorph piezoelectric film comprising in sequence

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Osaka, Japan

Tomoyuki Gotou