Abstract: A vortex ring generation device includes a casing having a gas passage and a discharge port, and an extrusion mechanism that extrudes a gas in the gas passage such that the gas in a vortex ring shape is discharged from the discharge port. V (m3) represents an extrusion volume, D (m) represents a diameter of the discharge port, L (m) represents a length of a cylinder having the diameter D and the volume V, and Re represents a Reynolds number of the discharged gas. 500?Re?3000 and 0.5?L/D?2.0.

Abstract: A controlling unit controls a refrigerant circuit and a flow path switching mechanism to perform a first humidity control operation or a second humidity control operation. In the first humidity control operation, a bypass passage is closed, and outside air is supplied into a room through one of first and second adsorption heat exchangers, and room air is exhausted to outside through the other of the first and second adsorption heat exchangers. In the second humidity control operation, the bypass passage is opened, and the outside air is supplied into the room through one of the first and second adsorption heat exchangers and the bypass passage, and room air is exhausted to outside through the other of the first and second adsorption heat exchangers.

Abstract: According to the present disclosure, a photographer is guided so that all construction phots can be taken. A program according to one embodiment of the present disclosure causes a terminal to function as: an information acquiring part configured to acquire an item to be photographed and the order in which the item is to be photographed, the item indicating a photographing object and what stage of construction the photographing object is in; and a presenting part configured to present the item and the order.

Abstract: The workload in creating a document for reporting a construction status is reduced. A task support apparatus includes a first acquiring unit configured to acquire a plurality of captured images associated with pieces of attribute information from a terminal device configured to associate the captured images with the pieces of attribute information; a second acquiring unit configured to acquire an insertion rule and/or a description rule of a document for reporting a construction status; and a generating unit configured to generate image information based on the pieces of attribute information, associated with the plurality of captured images acquired by the first acquiring unit, and the insertion rule and/or the description rule acquired by the second acquiring unit. The pieces of attribute information each include a construction detail and a photographing timing.

Abstract: A refrigeration cycle apparatus uses a sensor that measures temperature of a plurality of refrigerant pipes in a contactless manner. A refrigeration cycle apparatus includes a refrigerant circuit in which a compressor, a heat-source-side heat exchanger, an expansion mechanism, and a use-side heat exchanger are connected in sequence. The refrigeration cycle apparatus includes a temperature detector that detects temperatures at a plurality of points in a contactless manner, and a heat-source-side controller. At least one heat-source-side heat exchanger and the use-side heat exchanger includes a plurality of refrigerant pipes through which refrigerant to be heat-exchanged flows, and a flow rate adjuster. The flow rate adjuster adjusts flow rate of the refrigerant flowing through each of the plurality of refrigerant pipes. The temperature detector detects respective temperatures of the plurality of refrigerant pipes.

Abstract: An object of the present invention is to provide a vinyl ether, a simple method for producing the vinyl ether, a haloether used for producing the vinyl ether, and a method for producing the vinyl ether. The object can be achieved by producing a haloether by a method comprising step 1a of allowing a compound represented by formula (1): R1O?Y+??(1) wherein Y+ represents a cation and R1 is an organic group, to react, in the presence of a halogenating agent, with a compound represented by formula (2a): wherein R2a and R3a each independently represent H or an alkyl group, R4a represents H, a halogen, or an organic group, and X1a represents a halogen other than F.

Abstract: A refrigeration cycle apparatus includes a refrigerant circuit and an adsorbent. The refrigerant circuit includes a compressor that compresses a refrigerant. The refrigerant circuit configures a vapor compression refrigeration cycle in which the refrigerant circulates. The adsorbent adsorbs and desorbs the refrigerant circulating in the refrigerant circuit. The adsorbent adsorbs and desorbs the refrigerant in accordance with a change in a pressure of the refrigerant circulating in the refrigerant circuit.

Abstract: Provided is an injection molded article containing a copolymer containing tetrafluoroethylene unit and a fluoro(alkyl vinyl ether) unit, wherein the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 4.7 to 7.0% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 11.0 to 22.0 g/10 min, the melting point of the copolymer is 296 to 305° C., and the amount of fluorine ions dissolving out from the injection molded article into water is 7,500 ?g/m2 or lower.

Abstract: Damages to a refrigerant circuit of a refrigeration cycle apparatus due to a disproportionation reaction are suppressed. The use of a composition as a refrigerant in a compressor is use of, as a refrigerant, a composition containing one or two or more compounds selected from a group consisting of ethylene-based fluoroolefin, 2,3,3,3-Tetrafluoropropene (HFO-1234yf), and 1,3,3,3-Tetrafluoropropene (HFO-1234ze) in a compressor that includes a terminal (200) including a terminal pin (220) and a body (210) to which the terminal pin (220) is fixed, and the terminal pin (220) is fixed to the body (210) with a fixing adhesive (240) having a melting point or a softening point of 1000° C. or less.

Abstract: A method for producing a fluoropolymer aqueous dispersion, the method including concentrating a composition comprising a polymer (I) containing a polymerization unit (I) derived from a monomer (I) represented by the general formula (I), a fluoropolymer excluding the polymer (I), a nonionic surfactant, a fluorine-free anionic surfactant, and an aqueous medium to thereby obtain an aqueous dispersion containing the fluoropolymer, CX1X3?CX2R(—CZ1Z2-A0)m??(I) wherein X1 and X3 are each independently F, Cl, H, or CF3; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A0 is an anionic group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more.

Abstract: An object is to provide an efficient method for producing HFC-143 or HFO-1132. Provided as a means for solution is a method for producing 1,1,2-trifluoroethane (HFC-143), comprising subjecting 1,1,2-trifluoroethylene to a reduction reaction with a reducing agent in the presence of a catalyst to obtain HFC-143.

Abstract: 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)), 1,3,3,3-tetrafluoropropene (R1234ze), and 2,3,3,3-tetrafluoro-1-propene (R1234yf).

Abstract: There is provided a fluorine-containing copolymer containing tetrafluoroethylene unit, hexafluoropropylene unit and a fluoro(alkyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 5.0 to 7.5% by mass with respect to the whole of the monomer units, a content of the fluoro(alkyl vinyl ether) unit of 0.8 to 2.9% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 0.7 to 9.5 g/10 min, and the number of functional groups of 90 or less per 106 main-chain carbon atoms.

Abstract: A refrigerant circuit includes a compressor that compresses refrigerant and an expansion mechanism that decompresses refrigerant. The refrigerant circuit configures a vapor compression refrigeration cycle in which the refrigerant circulates. The adsorbent adsorbs and desorbs the refrigerant circulating in a first unit. The refrigerant circuit includes a high-pressure region and a low-pressure region. The refrigeration cycle apparatus is operated under at least one of a first condition and a second condition. In the first condition, the refrigerant in the high-pressure region has a pressure lower than or equal to a critical pressure of the refrigerant, and the refrigerant in the high-pressure region has a temperature exceeding a critical temperature of the refrigerant.

Abstract: A control device causes an air conditioning apparatus to execute a temperature adjustment operation of causing a first temperature to approach a first target temperature at a target time point and causing a second temperature to approach a second target temperature at the target time point. The first temperature is a surface temperature of a partition portion including at least one of a floor, a wall, and a ceiling facing a target space. The second temperature is an indoor temperature of the target space.

Abstract: A water heating system includes: a refrigerant circuit that includes a compressor and in which a refrigerant flows; and a water circuit in which water flows. The refrigerant circuit shares with the water circuit a water heat exchanger that heats the water using the refrigerant discharged from the compressor. The water heat exchanger includes a first heat-exchanging unit in which the refrigerant exchanges heat with the water at a water outlet portion. The refrigerant circuit further includes a heat radiator that is disposed between the compressor and the first heat-exchanging unit and that radiates heat of the refrigerant discharged from the compressor. The heat radiator is configured to radiate heat of the refrigerant to water that flows on an upstream side of the water outlet portion.

Abstract: A method for producing an aqueous dispersion of purified polytetrafluoroethylene, the method including: removing or reducing a compound represented by Formula (1) or (2) below from an aqueous dispersion of polytetrafluoroethylene obtained using a hydrocarbon surfactant: (H—(CF2)m—COO)pM1; or??Formula (1): (H—(CF2)n—SO3)qM2.??Formula (2): Also disclosed is a composition containing polytetrafluoroethylene substantially free from a compound represented by Formula (3) below and a molded body including the composition: (H—(CF2)8—SO3)qM2.

Abstract: An air conditioning system includes a first air conditioning device installed in a predetermined space, and a second air conditioning device installed in the predetermined space. The first air conditioning device is configured to change an air state in the predetermined space in accordance with a direction inputted by voice to an input-output device that is voice operable. The second air conditioning device is configured to change the air state in the predetermined space in accordance with the direction inputted by voice to the input-output device. Upon acquisition of direction information indicating the direction not specifying a device, the air conditioning system performs processing in response to the direction with use of an air conditioning device selected from the first air conditioning device and the second air conditioning device in accordance with a predetermined condition set in advance.

Abstract: An air-blowing apparatus includes a main body and a fan. In the main body a blow-out region is formed. The fan is provided in the main body and sends air toward the blow-out region. The air-blowing apparatus blows out air from the blow-out region such that a ratio (Vmax/Vmin) of a maximum value Vmax of wind velocity to a minimum value Vmin of the wind velocity is 1 or more and 10 or less in a target virtual plane. The target virtual plane is a virtual plane that faces the blow-out region. As a result, comfort of a person exposed to the wind sent from the air-blowing apparatus is improved.

Abstract: A ventilation device to be installed outdoors, includes: a casing; a heat exchanger accommodated in the casing and configured to perform heat exchange between outdoor air flowing indoors and indoor air flowing outdoors; an electric component unit including a control board and accommodated in the casing; and a fastener fixing, to the casing, an electric wire connected to the electric component unit. The heat exchanger is extractable sideward from the casing. The electric component unit is disposed above a projection region of the heat exchanger extracted from the casing. The casing includes a lead-out port disposed below the projection region and through which the electric wire is led out of the casing. The fastener is disposed between the electric component unit and the lead-out port. The electric wire fixed by the fastener is routed around the projection region.