Abstract: The present disclosure provides a multipurpose multi-source heat-storing compressed air energy storage system and a method thereof, including a packed bed heat-storing device, a heat-storing circuit, a heat-releasing circuit, a gas-storing circuit, a photothermal circuit, a heating-supplying circuit and a cooling-supplying circuit, wherein the heat-storing circuit and the heat-releasing circuit are connected to the packed bed heat-storing device, respectively, and the heat-storing heat exchanger of the heat-storing circuit and the heat-releasing heat exchanger of the heat-releasing circuit are connected with the gas-storing circuit, respectively, the photothermal circuit is connected with the heat-storing circuit, the heating-supplying circuit is connected with the heat-releasing circuit and the photothermal circuit, the cooling-supplying circuit is connected to the packed bed heat-storing device and the photothermal circuit, the photothermal circuit heats the heat-storing circuit and the heat-releasing circu

Abstract: An evaporator includes a first metal layer having a first inner surface and a first outer surface, a second metal layer having a second inner surface and a second outer surface, and a porous body provided between the first outer surface and the second outer surface. The porous body includes a first bottomed hole provided in the first inner surface, a second bottomed hole provided in the second inner surface, a first fine pore, wherein the first bottomed hole and the second bottomed hole partially communicate with each other through the first fine pore, a first groove portion provided in the first inner surface and configured to communicate with the first bottomed hole, and a second groove portion provided in the second inner surface and configured to communicate with the second bottomed hole. The first outer surface and the second outer surface serve as an outer surface of the evaporator.

Abstract: A heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system includes a first vapor compression flow path having a first condenser configured to place a working fluid in a heat exchange relationship with a cooling fluid, a second vapor compression flow path having a first evaporator configured to place the working fluid in a heat exchange relationship with a conditioning fluid, and a shared vapor compression flow path having a second condenser configured to place the working fluid in a heat exchange relationship with the cooling fluid and a second evaporator configured to place the working fluid in a heat exchange relationship with the conditioning fluid. The first vapor compression flow path is configured to direct working fluid vapor from the second evaporator to the first condenser and the second vapor compression flow path is configured to direct working fluid liquid from the second evaporator to the first evaporator.

Abstract: An illustrative heat pump system includes: a positive displacement compressor, an expander, and a recuperator. The compressor provides an sCO2 flow with a pressure ?15 MPa at a temperature ?120° C. and a mass flow rate ?4.5 kg/s to deliver between 1 and 10 MWth of power to a thermal load. The recuperator receives an outlet flow from a thermal source such as a geothermal well thermosiphon and directs it as a compressor inlet flow to the compressor and receives a return flow from the thermal load and directs it to the expander while converting at least some residual heat in the return flow into additional heat for the compressor inlet flow. The expander converts at least some pressure of the return flow into power for the compressor, producing an inlet flow to the source with a pressure no higher than 5 MPa at a temperature no higher than 20° C.

Abstract: The application relates to a heat exchanger apparatus comprising: a channel for fluid flow extending between an inlet and an outlet; a porous layer dividing a first portion of the channel from a second portion of the channel, wherein the porous layer comprises a plurality of pores configured to enable fluid to be transferred from the first portion of the channel to the second portion of the channel; a plurality of evaporator structures located within the second portion of the channel wherein the evaporator structures comprise a wicking layer configured to enable evaporation of fluid from the surface of the evaporator structures; an ejector section configured to combine fluid from the first portion of the channel with fluid from the second portion of the channel and provide the combined fluid to the outlet.

Abstract: A vapor chamber in which an enclosed space is formed, and a working fluid is sealed in this space, the enclosed space including: a plurality of condensate flow paths through which a fluid that is the working fluid in a condensing state flows; and vapor flow paths through which a vapor that is the working fluid in a vaporizing state flows, wherein each of projecting parts with which each of the vapor flow paths is provided has a projecting amount varying in an extending direction of the vapor flow paths; a pitch for opening parts that allow the vapor flow paths and the condensate flow paths to communicate varies in the extending direction of the vapor flow paths; or wall parts that separate the flow paths each have a given relationship with a transverse cross section of a given flow path.

Abstract: A cooling device for performing cooling by utilizing latent heat of vaporization without a compressor and is provided with a liquid feeding unit for feeding a refrigerant, an evaporator for evaporating the fed refrigerant, a condenser for condensing the evaporated refrigerant, and a controller for controlling the flow rate of the refrigerant. The controller is configured to determine whether or not dryout has occurred based on the temperature of the evaporator and the refrigerant temperature of the evaporator, the dryout being defined as a state in which a gas-phase refrigerant is in contact with an inner surface of a refrigerant flow path of the evaporator.

Abstract: An energy bank includes an enclosure, and within the enclosure: an input-side circuit for connection to an energy source; an output-side circuit for connection to an energy sink; and a phase-change material (PCM) for the storage of energy; wherein the PCM within the enclosure includes a plurality of resilient bodies that are configured to: reduce in volume in response to an increase in pressure caused by a phase change of the PCM; and expand again in response to a reduction in pressure caused by a reverse phase change of the PCM. The energy bank may have sensors to provide measurement data indicative of the amount of energy stored as latent heat in the PCM. An installation comprises an in-building hot water system including such an energy bank, the input-side circuit being coupled to a heat pump, and the output-side circuit being coupled to the in-building hot water system.

Abstract: A heat exchanger for a temperature controlled case is disclosed herein. A temperature controlled case includes a housing that defines a temperature controlled space. The housing includes a duct that receives circulated air. A heat exchanger is coupled to the housing and disposed within the duct. The heat exchanger includes an intake face at a non-perpendicular angle relative to an air flow direction in the duct immediately upstream of the heat exchanger.

Abstract: Passive cooling article (120) includes a plurality of first elements (122) defining a high absorbance in the atmospheric window wavelength range and defining high average reflectance in the solar wavelength range and a plurality of second elements (124) defining a low absorbance in the atmospheric window wavelength range and defining high average reflectance in the solar wavelength range, wherein the plurality of first (122) and second (124) elements are interspersed to form a major structure having a first major surface (130) comprising the first element outer surfaces (126) and the second element outer surfaces (128), wherein the first element outer surfaces (126) face a first direction toward a first end region (136) of the major structure (130) and the second element outer surfaces (128) face a second direction toward a second end region (136) of the major structure. The article (120) may be applied to a substrate (104), for example, on a generally vertical surface of a vehicle or stationary structure.

Abstract: A heatsink comprising a heat exchange device having a plurality of heat exchange elements each having a surface boundary with respect to a heat transfer fluid, having successive elements or regions varying according to a fractal relationship. According to one embodiment, a noise spectrum due to fluid flow is wideband. According to another embodiment, surface boundary layers are disrupted to increase heat transfer. Flow-induced vortices may be generated at non-corresponding locations of the plurality of fractally varying heat exchange elements.

Abstract: A thin-plate loop heat pipe comprises a housing including a first housing plate and a second housing plate that are relatively covered and sealed together at edges. An evaporation chamber, a vapor channel, a condensation chamber, a liquid channel, a compensation chamber and an auxiliary fluid channel are formed between the first housing plate and the second housing plate. The compensation chamber stores a liquid-phase working medium. A first capillary structure divides the evaporation chamber into a first vapor chamber and a second vapor chamber. The second vapor chamber is located between the first vapor chamber and the compensation chamber, the second vapor chamber is separated from the compensation chamber by the first capillary structure, the first vapor chamber and the condensation chamber communicate with each other by the vapor channel, the second vapor chamber and the condensation chamber communicate with each other by the auxiliary fluid channel.

Abstract: A construction element of a null-energy system includes a body on which the construction element can further include a porous material compartment with porous material to store water and evaporate the stored water outwards from the porous material through a holding layer on the opposite side of the porous material compartment to the body. The null-energy system uses a construction element of null-energy system as embodied therein.

Abstract: A heat dissipation device includes a first casing and a second casing coupled to the first casing. The second casing includes a body having an inner surface and an outer surface opposite the inner surface, and a first portion and a second portion, each of the first and second portions having a different cross-sectional area. The heat dissipation device further includes a plurality of columns on the inner surface, and a first wick structure disposed on the inner surface and in the first portion and the second portion.

Abstract: A flat tube, a multi-channel heat exchanger, and an air conditioning and refrigeration system. The flat tube has n groups of flow channels extending in a length direction of the flat tube, and the n groups of flow channels are distributed to be spaced apart in a width direction of the flat tube; and a flow cross-sectional area of a first group of the flow channels is A1, . . . , a flow cross-sectional area of kth group of the flow channels is Ak, . . . , a flow cross-sectional area of an nth group of the flow channels is An, 1<k?n, Ak?1.2Ak-1, and k is an integer greater than 1.

Abstract: Methods and valves for providing a continuous flow of cooler fluid in a fluid circuit of a thermal control system between a cooler and automotive transmission such that free flow of cooler fluid between the cooler and transmission exists at vehicle start-up. Fluid flow to and from the cooler is bypassed in case of pressure increases in cooler lines or pressure differentials, for example cause by a blockage in the cooler, such that the cooler fluid flow bypasses the cooler and continues in the fluid circuit through a thermal element of the thermal control system and back to the transmission.

Abstract: A vapor chamber includes a shell body, a wick structure, a single-piece support structure and a working fluid. The shell body includes a first shell and a second shell. A chamber is formed between the first shell and the second shell. The wick structure is disposed in the chamber and attached on the shell body. The single-piece support structure is disposed in the chamber and between the first shell and the second shell, and includes support bodies and ribs. Each support body includes a hollow rod and an annular seat. Any adjacent two of the annular seats are connected by one of the ribs. The support body are arranged at an interval. The ribs are arranged along the support bodies to form hollow portions between each support body and each rib. The working fluid is disposed in the chamber.

Abstract: A cooling assembly for a motor vehicle, the cooling assembly having a primary heat exchanger comprising a pair of primary collector boxes, the primary collector boxes with primary header plates, the primary header plates being of essentially rectangular shape; a plurality of primary tubes stacked between the primary header plates; a secondary heat exchanger comprising a pair of secondary collector boxes with secondary header plates being of essentially rectangular shape; a plurality of secondary tubes stacked between the secondary collector boxes. The primary heat exchanger and the secondary heat exchanger are arranged in parallel, perpendicularly to each other so that the secondary header plates of the secondary heat exchanger at least partially overlap the stack of the primary tubes of the primary heat exchanger.

Abstract: Proposed is a compressor cooling system for cleaning a vehicle sensor, the system including: a rainwater sensor unit provided on a front window of a vehicle for detecting rainwater; a rainwater collection unit for collecting the rainwater flowing down to under the front window; a water pump unit connected to the rainwater collection unit for discharging the collected rainwater to an air compressor; and an air compressor cooling unit combined with the air compressor and having an inlet flow path and an outlet flow path inside, the discharged rainwater cooling the air compressor while flowing through the inlet flow path and the outlet flow path.

Abstract: An air-conditioning apparatus includes a refrigerant circuit and a controller. The refrigerant circuit includes a main circuit and a bypass circuit. The bypass circuit is connected, by a pipe, to each of a plurality of parallel outdoor heat exchangers via a defrosting refrigerant pressure-reducing device, a defrosting flow passage switching device, and a backflow prevention device. The controller switches a flow passage for use in introduction of refrigerant using the defrosting flow passage switching device, to select one of the plurality of parallel outdoor heat exchangers as a defrosting target to be defrosted; and supplies defrosting refrigerant whose pressure is reduced by the defrosting refrigerant pressure-reducing device to the selected one of the plurality of parallel outdoor heat exchangers.