Abstract: The disclosure aims to provide a polytetrafluoroethylene fine powder containing less water and less impurities. Provided is a polytetrafluoroethylene fine powder substantially free from water and a fluorine-containing compound having a molecular weight of 1000 or less.

Abstract: Provided is an aqueous polymer dispersion exhibiting excellent liquid repellency, oil resistance, and low-temperature storage stability, and obtained from a hydrocarbon group-containing polymer composition including (1) a hydrocarbon group-containing polymer having a repeating unit formed from an acrylic monomer having a hydrocarbon group having 7-40 carbon atoms, (2) a diol compound, and (3) an aqueous medium.

Abstract: An electrolyte solution for a lithium ion secondary battery, including a compound (1) represented by the following formula (1): wherein R1 and R2 are each independently a methyl, ethyl, propyl, or butyl group. Also disclosed is a lithium ion secondary battery including the electrolyte solution and a module including the lithium ion secondary battery.

Abstract: An air conditioning capacity presenting system presents a capacity of an air conditioning apparatus including at least one outdoor unit, at least one indoor unit, and a connection pipe that connects the outdoor unit and the indoor unit. The air conditioning capacity presenting system includes first acquisition unit, a measurement unit, a second acquisition unit, and a capacity calculating unit. The first acquisition unit acquires outdoor unit capacity information, which is a rated capacity of the outdoor unit or information related to the rated capacity. The measurement unit measures power consumption of the outdoor unit. The second acquisition unit acquires an outside air temperature, which is a temperature of air around the outdoor unit. The capacity calculating unit obtains a calculation value of the capacity of the air conditioning apparatus based on the outdoor unit capacity information, the power consumption, and the outside air temperature.

Abstract: An indoor unit of a refrigeration apparatus, to be disposed in a ceiling, includes a casing that has blow-out ports and a blow-in port disposed in a lower surface, a plate-shaped member disposed below the blow-in port, and a filter disposed above an opening in the plate-shaped member. The casing accommodates a heat exchanger, a control board, a support member supporting the control board, and a gas sensor disposed at or adjacent to the support member and between the casing and the plate-shaped member. The gas sensor detects the refrigerant flowing out of the blow-in port due to refrigerant leakage, and the gas sensor is removable when the plate-shaped member is shifted.

Abstract: A fan device includes a motor and a control unit. The motor has a variable number of revolutions. The motor includes a shaft supported by a bearing enclosing lubricant. The control unit drives the motor. The control unit executes, when continuously driving the motor at a first number of revolutions or less for a first time period, driving the motor at a second number of revolutions more than the first number of revolutions for a second time period shorter than the first time period. The first number of revolutions causes poor oil film formation of the lubricant in the bearing if the motor is driven for more than the first time period. The second number of revolutions causes oil film formation of the lubricant in the bearing if the motor is driven for the second time period.

Abstract: A polyether group-containing compound of the formula (I). In each of the compound of the formula (I), one or two R— are represented by (Rf-Xf1-PE-Xf2)?—X1—, and one or two R— are represented by RSi—. The symbols are as defined in the description.

Abstract: The disclosure aims to provide a polytetrafluoroethylene powder for an electrode binder which can not only reduce or prevent gas generation inside a battery cell and deterioration of battery characteristics but also improve the electrode strength, an electrode binder, an electrode mixture, an electrode, and a secondary battery. Provided is a polytetrafluoroethylene powder for use as an electrode binder, the polytetrafluoroethylene having a standard specific gravity of 2.200 or less and being substantially free from water.

Abstract: Provided is a fluoroelastomer crosslinkable composition containing a polyol-crosslinkable fluoroelastomer (a), a cross-linking agent (b), and an acid acceptor (d), wherein the cross-linking agent (b) is at least one selected from the group consisting of a compound represented by the formula (b): HOCH2—Rf—CH2OH, and a salt of the compound represented by the formula (b) with an alkali metal, an alkaline earth metal, or an onium compound, the acid acceptor (d) is at least one selected from the group consisting of hydrotalcite and bismuth oxide, and the composition contains or is free from one or both of calcium hydroxide and magnesium oxide, with the total content thereof being 0 to 1 part by mass based on 100 parts by mass of the fluoroelastomer (a).

Abstract: A blower includes a motor with variable rotational speed, and a first controller. The motor has a shaft supported by a bearing with a lubricant sealed in. The first controller rotationally drives the motor. The first controller executes first control to decrease the rotational speed of the motor when a first temperature, which is the temperature of the bearing, decreases during operation in which the motor is rotated in a predetermined low rotational speed range. This air conditioner includes: an indoor unit having the blower, a temperature sensor that measures the first temperature, and a heat exchanger; and a second controller that controls the blower to perform air conditioning operation in a space to be air-conditioned in which the indoor unit is installed.

Abstract: An air-conditioning management system includes: an air conditioning apparatus configured to carry out a refrigerant recovery operation of recovering a refrigerant from a refrigerant circuit that connects an outdoor unit and an indoor unit and sending the recovered refrigerant to each recovery unit of the outdoor unit; and a control unit configured to make a determination whether all the recovered refrigerant is sendable to each recovery unit before a start of the refrigerant recovery operation by the air conditioning apparatus, and to output, when determining that all the recovered refrigerant is not sendable to each recovery unit, a command for notifying the determination.

Abstract: Provided is an air conditioning system capable of detecting in advance a device that consumes more power than the power that can be fed by a power feed unit. An air conditioning system includes a refrigerant cycle, a power feed unit, and a controller. The refrigerant cycle includes an outdoor unit and a plurality of indoor units. In a case where a power source for at least one indoor unit of the plurality of indoor units has been interrupted, the power feed unit feeds power from an auxiliary power source to the indoor unit for which the power source has been interrupted. When a predetermined device has been connected to at least part of the plurality of indoor units and the power feed unit, the controller performs deactivation of at least one of functions of the device.

Abstract: At a refrigeration cycle device, an injection pipe and an economizer heat exchanger are provided at a main refrigerant circuit. In addition, the refrigeration cycle device includes a sub-refrigerant circuit having a sub-usage-side heat exchanger. At the refrigeration cycle device, the sub-usage-side heat exchanger functions as an evaporator of a sub-refrigerant and cools a main refrigerant that has been cooled at the economizer heat exchanger, or functions as a radiator of the sub-refrigerant and heats the main refrigerant that has been cooled at the economizer heat exchanger.

Abstract: Provided is a water repellent composition which includes: a water-repellent resin based on a hydrocarbon having a C5-C40 hydrocarbon group; and hydrophilic particles. The water repellent composition can impart both satisfactory water repellency and satisfactory antislip properties to textile products, and has storage stability.

Abstract: An air conditioner that performs an air conditioning operation in an indoor space includes a compressor and a controller that controls an operating frequency of the compressor at a predetermined update interval in accordance with an air conditioning load in the indoor space. The controller shortens the update interval when a first condition indicating that the air conditioning load is low and a second condition indicating that a performance of the compressor to the air conditioning load is high are satisfied.

Abstract: An object is to provide a composition useful for pest control. Disclosed is a pest control composition containing a compound represented by formula (1) or a salt thereof: wherein R1 represents an aryl group optionally having one or more substituents, R2 represents a hydrogen atom, a halogen atom, a cyano group, a hydrocarbon group optionally having one or more substituents, R4O—, R5S—, or R6R7N—, R3 represents a hydrogen atom or a hydrocarbon group optionally having one or more substituents, RX represents a hydrogen atom, a hydrocarbon group optionally having one or more substituents, R6CO—, or R9SO2—, R4, R5, R6, R7, R6, and R9 each independently represent a hydrogen atom or a hydrocarbon group optionally having one or more substituents, and R3 may be bound to R1 or R2 to form a ring.

Abstract: A converter circuit converts AC electric power into DC power. An inverter circuit converts the DC power into AC power. A capacitor is connected in parallel to each of the converter circuit and the inverter circuit between these circuits. The capacitor allows variation of an output voltage from the converter circuit, and absorbs variation of an output voltage from the inverter circuit due to a switching operation. An overvoltage protection circuit includes a resistor and a semiconductor element connected in series to each other. The overvoltage protection circuit is connected in parallel to the capacitor to protect the inverter circuit from an overvoltage. First and second control units respectively control the inverter circuit and the overvoltage protection circuit.

Abstract: Provided is an air conditioner including an irradiation unit that irradiates an irradiation area of an indoor unit with ultraviolet rays, a temperature detection unit that detects an ambient temperature of the irradiation unit, and a control unit that controls an irradiation time of the irradiation unit. The control unit controls the irradiation time in accordance with the ambient temperature detected by the temperature detection unit.

Abstract: [Problem] To provide a neck-worn device in which a battery or other electronic component is disposed at an appropriate location. [Solution] This neck-worn device is to be worn at the neckline of a wearer, wherein a body part 30 comprises: a battery 90; a circuit board 85 on which is installed an electronic component that is driven by receiving power supplied from the battery 90; and a body part casing 32 in which the battery 90 and the circuit board 85 are stored. The circuit board 85 is disposed inside the body part casing 32 so as to be positioned in between the battery 90 and the neckline of the wearer while the device is being worn. [Effect] Heat generated from the battery 90 is not readily transmitted to the wearer, thus improving the fit of the neck-worn device.

Abstract: A composition including a fluorine-containing polymer and a cross-linking agent, wherein the fluorine-containing polymer contains a vinylidene fluoride unit, a unit of a fluorine-containing monomer (1) represented by the following general formula (1): CHX1?CX2Rf??(1) wherein one of X1 and X2 is H, the other is F, and Rf is a linear or branched fluoroalkyl group having 1 to 12 carbon atoms, and a unit of a monomer providing a crosslinking site. The monomer providing a crosslinking site is a monomer having at least one crosslinkable group selected from a cyano group, a carboxyl group, an alkoxycarbonyl group and a hydroxyl group. Also disclosed is a crosslinked rubber molded article obtained by crosslinking the composition.