Daikin Industries, Ltd.

Mitsushi Itano

Shun Ohkubo

Daisuke Karube

Yuuki Yotsumoto

Kazuhiro Takahashi

Hitomi Kuroki

Tatsuya Takakuwa

Tatsumi Tsuchiya

Yasufu Yamada

Yuzo Komatsu

Kenji Gobou

Tomoyuki Gotou

Akihito Mizuno

Takehiko Kezuka

Eiji Kumakura

Atsushi Yoshimi

Takuro Yamada

Ikuhiro Iwata

Tetsushi Tsuda

Makoto Suyama

Shingo Nakamura

Fumihiro Kamiya

Takeo Abe

Yumi Toda

Masaru Tanaka

Satoshi Tokuno

Yuuichi Yanagi

Keisuke Ohtsuka

Hirokazu Aoyama

Atsushi Okamoto

Yoshinari Asano

Motonobu Kubo

Kazuhiro Furusho

Keiji Aota

Takashi Usui

Takashi Kanemura

Takashi Yoshimura

Hideki Aomi

Masanori Ukibune

Shigeru Maruyama

Tomohiro Hosomi

Kei Kuramoto

Tomizo Soda

Masataka Hirose

Yoshikazu Nakao

Daisuke Watanabe

Masao Ishii

Tatsuya Unemoto

Shinichi Fujinaka

Provided is a novel low-GWP mixed refrigerant. A composition comprising a refrigerant, the refrigerant comprising 1,1-difluoroethylene (HFO-1132a) and difluoromethane (R32), wherein HFO-1132a is present in an amount of 26 to 40 mass % based on the total of HFO-1132a and R32, and R32 is present in an amount of 60 to 74 mass % based on the total of HFO-1132a and R32.

Composition containing refrigerant, use of same, refrigerator having same, and method for operating said refrigerator

The present disclosure provides a mixed refrigerant having four types of performance, i.e., an excellent coefficient of performance and refrigerating capacity that allow it to serve as an alternative refrigerant for R410A, a sufficiently low GWP, and non-flammability. Specifically, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trifluoroiodomethane (CFI) and difluoromethane (R32), wherein the contents of CFI and R32 in the refrigerant are respectively 48 mass %≥CFI≥46 mass % and 54 mass %≥R32≥52 mass %, based on the total amount of CFI and R32 taken as 100 mass %.

Composition containing refrigerant, use thereof, refrigerator having same, and operation method for said refrigerator

The present invention provides a composition comprising a refrigerant (mixed refrigerant) having three types of performance, i.e., a coefficient of performance (COP) and refrigerating capacity (Cap) that are equivalent to or higher than those of R410A, and a sufficiently low GWP. Specifically, the present invention provides a composition comprising a refrigerant, the refrigerant comprising CFI, CO(R744), and at least one compound A selected from the group consisting of trifluoroethylene (HFO-1123), trans-1,2-difluoroethylene [(E)-HFO-1132], cis-1,2-difluoroethylene [(Z)—HFO-1132], fluoroethylene (HFO-1141), and 3,3,3-trifluoropropyne (TFP).

Refrigerant-containing composition, heat transfer medium, and heat cycle system

The present invention addresses a problem of providing a mixed refrigerant that combines three kinds of performances of having a refrigeration capacity (this may also be referred to as a cooling capacity) and of having a coefficient of performance (COP) equivalent to those of R410A, and of having a sufficiently small GWP. As a means for solving the problem, provided is a refrigerant-containing composition, wherein the refrigerant contains trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123) and 2,3,3,3-tetrafluoro-1-propene (R1234yf), and R32.

Refrigerant-containing composition, use of same, refrigerator having same, operation method for said refrigerator, and refrigeration cycle device equipped with same

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

In an air conditioner that uses a refrigerant mixture containing at least 1,2-difluoroethylene, high efficiency is achieved. In the air conditioner (), a compressor () can be driven without interposing a power conversion device between an AC power source () and a motor (). Thus, it is possible to provide the air conditioner () that is environmentally friendly and has a relatively inexpensive configuration.

Air conditioner

An object is to provide a novel low-GWP mixed refrigerant. A solution to the problem is to provide a composition containing a refrigerant that contains trans-1,2-difluoroethylene (HFO-1132(E)) and 1,3,3,3-tetrafluoropropene (R1234ze).

Composition including refrigerant, use therefor, refrigerator comprising same, and method for operating said refrigerator

An object is to provide a novel low-GWP mixed refrigerant. Provided as a means for a solution is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)) and difluoromethane (R32), wherein HFO-1132(E) is present in an amount of 25 to 27 mass % based on the total of HFO-1132(E) and R32, and R32 is present in an amount of 73 to 75 mass % based on the total of HFO-1132(E) and R32.

Composition containing refrigerant, use of same, freezer having same, and method for operating said freezer

An object is to provide a novel low-GWP mixed refrigerant. Provided as a means for a solution is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (R32), 1,3,3,3-tetrafluoropropene (R1234ze), and carbon dioxide.

A warm-water generating apparatus () uses, as a refrigerant, a mixed refrigerant containing at least 1,2-difluoroethylene (HFO-1132(E)). The warm-water generating apparatus () includes a compressor (), a heat-source-side air heat exchanger (), an expansion valve (), and a use-side water heat exchanger (). The water heat exchanger () causes the mixed refrigerant flowing therein and first water to exchange heat with each other to heat the first water.

Warm-water generating apparatus

Provided is a novel, low-GWP mixed refrigerant. A composition contains a refrigerant that contains trans-1,2-difluoroethylene (HFO-1132(E)), trifluoroethylene (HFO-1123), and 1,3,3,3-tetrafluoropropene (R1234ze).

Composition containing refrigerant, use of same, refrigerator comprising same, 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

An object of the present disclosure is to provide a novel low-GWP mixed refrigerant. To solve this problem, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), and difluoromethane (R32).

The present invention provides a refrigerant-containing composition by using a refrigerant that has a refrigerating capacity equivalent to that of widely used R404A, and a low GWP. Specifically, the present invention provides a composition that contains a refrigerant containing difluoromethane (R32), pentafluoroethane (R125), 1,1,1-trifluoroethane (R143a), 2,3,3,3-tetrafluropropene (R1234yf), and 1,1,1,2-tetrafluoroethane (R134a) in specific concentrations.

Composition containing refrigerant comprising R32, R125, R143A, R1234YF and R134A, and refrigeration method, refrigerator operating method and refrigerator using said composition

The present disclosure provides a composition comprising a refrigerant (mixed refrigerant), the composition having three types of performance; i.e., a coefficient of performance (COP) and a refrigerating capacity (Cap) that are equivalent to or higher than those of R404A and/or R410A, and a sufficiently low GWP. The present disclosure specifically provides a composition comprising a refrigerant, the refrigerant comprising difluoromethane (HFC-32), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and at least one of 1,1-difluoroethylene (HFO-1132a) and tetrafluoroethylene (FO-1114).

Growing community of inventors

Osaka, Japan

Mitsushi Itano