Abstract: A suction injection pipe and a subcooling heat exchanger are provided at a main refrigerant circuit in which a main refrigerant circulates. Further, a sub-refrigerant circuit that differs from the main refrigerant circuit and in which a sub-refrigerant circulates is provided. A controller performs control for switching between a cooling action of the subcooling heat-exchanger that cools the main refrigerant that is sent to a main use-side heat exchanger by using the suction injection pipe and the subcooling heat exchanger, and a cooling action of the sub-refrigerant-circuit that cools the main refrigerant that is sent to the main use-side heat exchanger by using the sub-refrigerant circuit.

Abstract: A control apparatus is communicably connected to a first apparatus to perform a control on the first apparatus. The control apparatus includes a data collecting unit, a collection interval determining unit, and a storing unit. The data collecting unit collects, by polling and from the first apparatus, data in order to perform the control. The collection interval determining unit determines, based on a setting content of the control, a collection interval of the data collected by the data collecting unit. The control apparatus performs a plurality of the controls on one first apparatus. The storing unit stores, for each of the controls, one data item or a plurality of data items constituting the data. The storing unit further stores, for each of the data items, the collection interval.

Abstract: A machine learning apparatus for optimizing transfer of heat quantity is provided.

Abstract: A fluororesin composition containing a melt moldable fluororesin and a silica, wherein the fluororesin has 25 or more carbonyl group-containing functional groups per 106 main-chain carbon atoms; the silica is a spherical silica; and the fluororesin composition has a linear expansion coefficient of 100 ppm/° C. or lower. Also disclosed is a fluororesin sheet including the fluororesin composition, a laminate including a copper foil layer and a layer including the fluororesin composition and a substrate for circuits including a copper foil layer and a layer including the fluororesin composition.

Abstract: A refrigeration system including a storage in which multiple containers are joined and each include a refrigeration apparatus includes a first communication unit, a second communication unit, and a third communication unit that perform communication so that the refrigeration apparatuses of the containers operate in synchronization with each other.

Abstract: An HVAC system is provided. Embodiments of the present disclosure generally relate to heat exchangers having tubing with a reduced diameter compared to traditional systems. In one embodiment, a ducted HVAC system comprises an outdoor heat exchanger with tubing that has an outer diameter of eight millimeters (8 mm) or less and an indoor heat exchanger with tubing that has an outer diameter of nine millimeters (9 mm) or less. Additional systems, devices, and methods are also disclosed.

Abstract: [Object] To correct a power consumption record in a period in which energy-saving control is performed and a power consumption record in a period in which the energy-saving control is not performed in accordance with a purpose of the comparison, and to enable evaluation of power consumption from various viewpoints. [Solution] A terminal device configured to evaluate power consumption of equipment includes a communication control unit configured to acquire a power consumption record of the equipment, and a processing unit configured to output data related to power consumption records before and after an energy-saving operation of the equipment.

Abstract: A composition containing polytetrafluoroethylene and substantially free from a compound represented by Formula (3): (H—(CF2)8—SO3)qM2 wherein M2 is H, a metal atom, NR54 (where R5s may be the same as or different from each other and are each H or an organic group having 1 to 10 carbon atoms), an imidazolium optionally having a substituent, a pyridinium optionally having a substituent, or a phosphonium optionally having a substituent, and q is 1 or 2. Also disclosed is a molded boy including the composition.

Abstract: A surface treatment agent which is a water-repellent agent, includes (1) a fluorine-free block copolymer, and (2) a liquid medium which is an organic solvent, water, or a mixture of water and an organic solvent. The non-fluorinated block copolymer includes at least one block segment (A) which includes a repeating unit formed from one or more types of acrylic monomer having a long-chain hydrocarbon group containing 12-40 carbon atoms. The non-fluorinated block copolymer preferably contains a segment (B) constituted by at least one of: (B1) a block segment including a repeating unit, different from that of segment (A), that is formed from an acrylic monomer having a long-chain hydrocarbon group including 12-40 carbon atoms; (B2) a block segment including a repeating unit formed from an acrylic monomer not having a long-chain hydrocarbon group; and (B3) a random segment formed from at least two types of acrylic monomers.

Abstract: A method for producing a fluoropolymer which method includes polymerizing a perfluoromonomer in an aqueous medium in the presence of a polymer (1) to obtain a fluoropolymer, wherein the content of a polymerized unit derived from the perfluoromonomer in the fluoropolymer is 90 mol % or more based on all polymerized units of the fluoropolymer, the polymer (1) is a polymer of a monomer (1) represented by the general formula (1): CF2?CF—O—R-(Rf-SO3M)m, a polymerized unit (1) derived from the monomer (1) in the polymer (1) is 50% by mass or more based on all polymerized units of the polymer (1), and the content of a dimer and a trimer of the monomer (1) in the polymer (1) is 1.0% by mass or less based on the polymer (1).

Abstract: A coating material composition containing polytetrafluoroethylene, a binder resin, and a filler being at least one kind selected from calcium fluoride, iron oxide and talc, wherein the content of N-methyl-2-pyrrolidone is less than 1% by weight of the composition. Also disclosed is a coating film formed of the coating material composition.

Abstract: An information takeover system includes: a first board that includes a first control unit and a first storage unit storing first information about an air conditioning apparatus; and a second board that includes a second control unit and is connectable to the first board in an information exchangeable manner. The first control unit is configured to perform first control to transmit the first information to the second board with the first board and the second board connected to each other in the information exchangeable manner.

Abstract: A technique that allows a plurality of series-connected compressors in a refrigerant circuit to have equal amounts of oil in a more versatile manner is provided. A compression apparatus according to an embodiment in the disclosure includes series-connected compressors 10, 20 in a refrigerant circuit 1 that is to circulate a refrigerant; an oil separator 30 is provided in a discharge passage 50 of the compressor 10 of the compressors 10, 20, and separates oil from the refrigerant discharged from the compressor 10 and causes the refrigerant separated from the oil to flow downstream (intake passage 80); an oil return passage 70 returns the oil separated by the oil separator 30 to the compressor 10 neighboring upstream; an oil discharge outlet 10A is provided in the compressor 10; and an oil discharge passage 60 connects the oil discharge outlet 10A to an inlet of the oil separator 30.

Abstract: A connection structure between a printed circuit board and a terminal block includes: an insertion portion at one end of the printed circuit board with a pattern disposed thereon; a terminal-block main body including a receiving port that receives the insertion portion; a nut held in the terminal-block main body; and a screw tightened into the nut. The pattern is interposed between the screw and the nut when the insertion portion is inserted into the receiving port.

Abstract: A compressor includes a casing, a housing inside the casing, and first and second welds. The casing includes a tubular barrel casing and an end casing. The first weld welds the barrel casing and the housing together. The second weld welds the barrel casing and the end casing together along a circumferential direction. The second weld includes a repeatedly welded portion formed by one end portion and an other end portion of the second weld overlapping each other, or the second weld includes a plurality of second welds each including a repeatedly welded portion formed by an end portion of the second weld and an end portion of an other one of the second welds overlapping each other. The repeatedly welded portion are formed to reduce deformation of the barrel casing. The repeatedly welded portion and the first weld are aligned along an axial direction of the barrel casing.

Abstract: An adsorption system is placed in an air passage used to supply air to a room. The adsorption system includes an adsorption section that adsorbs a target substance except water, and a reduction section that reduces accumulation of moisture in the adsorption section. An adsorbent used in the adsorption section contains a metal-organic framework. The reduction section includes a heating element that heats the adsorption section and evaporates moisture in air that has flowed into the adsorption section.

Abstract: A recycle information management system includes a communication device and a management device. The communication device transmits recycle information acquired from a recycle system via a network. The recycle system includes at least a recycling device that removes at least oil from the collected refrigerant to recycle the refrigerant. The management device includes a storage unit that stores the recycle information in association with a recycle system ID usable to identify the recycle system.

Abstract: A centrifugal compressor for a chiller includes a first stage impeller, a first stage diffuser, a second stage impeller, a second stage diffuser, and a second stage volute. The first stage impeller is arranged to receive refrigerant from an inlet. The second stage volute is disposed downstream of the second stage diffuser to receive the refrigerant after the refrigerant has been compressed. The second stage volute has a reverse overhung configuration.

Abstract: 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.

Abstract: A turbofan includes a circular end plate, a ring-shaped shroud facing the end plate, and a plurality of blade members disposed between the end plate and the shroud. An annular portion of a space between the end plate and the shroud where the blade members are disposed is a pressure-increase flow path. The turbofan causes air to flow from an inner peripheral side to an outer peripheral side of the pressure-increase flow path. A cross-sectional area of the pressure-increase flow path increases gradually from an upstream end toward a downstream end of the pressure-increase flow path.