Abstract: A heat exchanger includes a pipe made of aluminum, a thermistor, and an attaching portion with which the thermistor is attached to the pipe. The pipe carries a flow of refrigerant. The thermistor detects a temperature of the refrigerant. The pipe includes a sacrificial layer provided on a part of a surface of the pipe. The sacrificial layer is lower in potential than the aluminum of the pipe. The attaching portion is higher in potential than the sacrificial layer. At least one part of the attaching portion is attached to the surface of the pipe where the sacrificial layer is not provided. The attaching portion includes a brazed portion that is higher in potential than the sacrificial layer. The thermistor is attached to the pipe with the brazed portion.

Abstract: A fill pack includes a first sheet and a second sheet. The first sheet has a first end, a second end and a first plurality of flutes. A first microstructure includes first top flat strips, first bottom flat strips and first conduit sides connecting the first top flat strips to the first bottom flat strips. A plurality of first radii connect the first top flat strips to the first conduit sides and the first bottom flat strips to the first conduit sides. The second sheet has a second plurality of flutes. A second microstructure includes second top flat strips, second bottom flat strips and second conduit sides connecting the second top flat strips to the second bottom flat strips. A plurality of second radii connect the second top flat strips to the second conduit sides and second bottom flat strips to the second conduit sides.

Abstract: A double-tube heat exchanger includes an outer tube and an inner tube forming a first annular gap. The outer tube is provided with an inlet connection and an outlet connection for inletting and outletting a first fluid flowing in the first annular gap. The inner tube includes a first inlet connection and a second outlet connection for inletting and outletting a second fluid flowing in the inner tube for an indirect heat exchange with the first fluid. One of the tube sections is integrally formed with an assembly wall which joints a first end of the outer tube to the inner tube, to seal the first annular gap at the first end of the outer tube. A second annular gap is exposed to the air and is in fluid communication neither with the first annular gap nor with the inner tube, and is partially surrounded by the first annular gap.

Abstract: Oil cooler is provided to include: a number of core plates each of which has three oil pass holes where oil flows and three cooling water pass holes where cooling water flows; heat-exchanging section where core plates are laminated to define inter-plate oil flow passage and inter-plate cooling water flow passage alternately between an adjacent pair of core plates, in which oil and cooling water can mutually independently flow in direction perpendicular to core plate lamination direction while changing its flow direction by U-turn thereby proceeding in core plate lamination direction as a whole; one end part located at one side of core plate lamination direction and provided with both oil inlet and oil outlet; and the other end part located at the other side of core plate lamination direction and provided with both cooling water inlet and cooling water outlet.

Abstract: The present disclosure provides a heat exchanger assembly and an air conditioner. The heat exchanger assembly comprises a first heat exchanger, a second heat exchanger and a third heat exchanger. The second heat exchanger is arranged to be angled relative to the first heat exchanger, the first end of the second heat exchanger is connected with or close to the first end of the first heat exchanger, and the second end of the second heat exchanger is away from the second end of the first heat exchanger. The third heat exchanger is arranged between the first heat exchanger and the second heat exchanger.

Abstract: A plate heat exchanger includes a plurality of heat transfer plates stacked together and each having openings at four corners thereof. The heat transfer plates are partially brazed together such that a first flow passage through which first fluid flows and a second flow passage through which second fluid flows are alternately arranged with one of the heat transfer plates disposed therebetween, openings at the four corners being connected forming first headers through which the first fluid enters and is discharged and second headers through which the second fluid enters and is discharged. At least one of two heat transfer plates between which the first flow passage or the second flow passage is disposed is formed by a pair of metal plates stacked together. The metal plate adjacent to the second flow passage is thinner than the metal plate adjacent to the first flow passage.

Abstract: An evaporator assembly including an inlet header, an outlet header, and an evaporator body extending from the inlet header to the outlet header. The evaporator body defining a channel fluidly connected to the outlet header. The evaporator assembly further includes a feed tube including: an adapter fluidly connected to the inlet header and a perforated tube fluidly connected to the inlet header through the adapter. The perforated tube including a first end attached to the adapter, a second end opposite the first end, and a plurality of orifices fluidly connecting the perforated tube to the channel. The perforated tube extends within the channel.

Abstract: A thermosiphon device includes an evaporator section, a condenser section and a liquid path configured to deliver liquid that exits the evaporator section directly back to the evaporator inlet. The condenser section has a significantly reduced mass flow rate and lower pressure drop as compared to the evaporator section, which has an increase liquid fraction of working fluid.

Abstract: A falling film evaporator (100), a housing (101) thereof being accommodated with a heat exchange tube (304), a perforated plate (205) and a spraying tube (202), the perforated plate (205) being provided between the spraying tube (202) and the heat exchange tube (304), such that refrigerant sprayed from the spraying tube (202) is sprayed onto the surface of the heat exchange tube (304) by means of distribution of the perforated plate (205); spraying openings (301) on the spraying tube (202) have a strip shape, and the extension direction of the openings is perpendicular to the length direction of the spraying tube (202).

Abstract: A fluid coil includes a tube bundle having a series of straight tubing runs and a series of return bends extending between and fluidically connecting ones of the straight tubing runs, an expansion header fluidically connected to at least some of the return bends and a polymeric material disposed in the expansion header. The polymeric material has an initial shape and is compressible to repeatedly expand and contract between a first volume in which water is present in the tube bundle and a second volume in which the water undergoes a phase change. Contraction of the polymeric material absorbs an increase in volume as the water undergoes the phase change to prevent stressing and rupture of the tube bundle and upon an opposite phase change, the polymeric material returns to its initial shape. The polymeric material can be a pressurizable bladder. A system and method to prevent the rupture of a tube bundle in a fluid coil are also disclosed.

Abstract: A cooling arrangement for an electric machine (2) and at least one further component (4, 5) of an electric power unit: The cooling arrangement comprises an oil circuit (16), an oil pump (46) circulating oil to the electric machine (2), a first coolant circuit (6) configured to cool the further component (5) of the electric power unit, and coolant radiator arrangement (8a, 8b) in which the coolant in the first coolant circuit (6) is cooled by air, The oil circuit (16) comprises an oil radiator (46), an oil radiator fan (47) configured to provide an adjustable air flow through the oil radiator (46) and a heat exchanger (15) in which heat is transferred between the coolant in the first coolant circuit (6) and the oil in the oil circuit (16).

Abstract: A separator and distributor assembly for a falling film evaporator housed within the evaporator shell includes a housing defining a separation volume, a refrigerant inlet configured to admit a liquid and vapor refrigerant flow into the separation volume and one or more refrigerant gutters extending along a lengthwise axis of the housing. The refrigerant gutter has a gutter inlet at a bottom of the separation volume, and the one or more refrigerant gutters are configured to receive separated liquid refrigerant from the separation volume. One or more sparge channels are in fluid communication with the refrigerant gutters. The sparge channel includes one or more sparge openings at a top of the sparge channel vertically below the gutter inlet. The one or more sparge openings are configured to flow liquid refrigerant therefrom.

Abstract: A tank for a heat exchanger is provided. The tank includes a foot portion, an internal wall, a sealing member and at least one first coupling member. The internal wall is formed along the foot portion at a first end of the foot portion. Further, the sealing member is disposed on the foot portion along an outer circumference of the internal wall to provide a fluid-tight sealing between the tank and a header, when the tank is placed on the header. The at least one first coupling member is provided on the foot portion, adjacent to the sealing member, to couple with the header.

Abstract: A method by a controller of a cooling system includes calculating a difference between a first temperature of ambient air and a second temperature of pre-cooled air. The pre-cooled air is ambient air that has been cooled by water from a water distribution system before it enters one or more condenser coils. The method further includes determining that the difference between the first and second temperatures is less than or equal to a predetermined temperature difference, and in response, determining that the first temperature is greater than or equal to a minimum temperature. The method further includes, if the first temperature is greater than or equal to the minimum temperature, instructing the water distribution system to distribute the water to pre-cool the ambient air for a predetermined length of time and to disable the distribution of the water after the predetermined amount of time has elapsed.

Abstract: A heat exchanger (100), a heat exchanger module (100?) having the heat exchanger (100), and an air conditioning system having the heat exchanger (100) or the heat exchanger module (100?); the heat exchanger (100) comprises: a first header (11) and a second header (12), with an axis of the first header (11) being inclined relative to an axis of the second header (12); and a heat exchange pipe (2) connected to the first header (11) and the second header (12), the heat exchange pipe (2) being bent. The heat exchange efficiency can be increased by using the heat exchanger (100).

Abstract: A flow distributor for a heat transfer device having a plurality of channels includes a sheath defining a plurality of distributor holes, each distributor hole configured to be in fluid communication with a respective channel inlet of each channel of the heat transfer device and an insert defining a plurality of fluid channels therein and a fluid inlet, each fluid channel in fluid communication with the fluid inlet. The insert is disposed within the sheath to seal the fluid channels with each fluid channel in fluid communication with a respective one of the distribution holes. The fluid inlet includes an inner inlet and an outer inlet radially outward from the inner inlet for mixing a fluid flow in the fluid inlet for evenly distributing fluid flow (e.g., a two phase flow) into the fluid channels of the insert and into each channel of the heat transfer device.

Abstract: An indoor unit of an air-conditioning apparatus includes a heat-medium heat exchanger, an air vent valve, a drain pan, and a hose. The heat-medium heat exchanger is provided in a housing to cause heat exchange to be performed between a heat medium and indoor air. The air vent valve allows air to escape from a heat medium passage that allows the heat medium to flow in the heat-medium heat exchanger. The drain pan is provided below the heat-medium heat exchanger to receive condensation water generated at a surface of the heat-medium heat exchanger. The hose has flexibility, and is attached to the air vent valve, and provided to let out the air along with the heat medium from the heat medium passage to the inner space in the drain pan. The hose has a double-wall structure and an upper end portion of the hose is fixed to the air vent valve.

Abstract: A novel method of deicing utilizing a fins-on-tubes type evaporator/heat exchanger system that is optimized for energy-saving inductive heating thereof, by configuring it to increase its resistance to a value at which the system's reactance at its working frequency is comparable to its electrical resistance. The system includes a set of tubes configured for flow of cooling material therethrough, and also includes a set of fins positioned and disposed perpendicular to, and along, the tubes, in such a way that at least a portion of the fins comprises longitudinal excisions therein.

Abstract: A distributor (100), a falling film evaporator and a refrigerating system. The distributor includes: a sprayer (110), the top of the sprayer being connected to a falling film evaporator inlet (230), and the bottom of the sprayer being provided with spray holes (111); and an orifice plate (120) disposed at a lower end of the sprayer and provided with multiple distribution holes (121), wherein a centrifugal gas-liquid separating element is disposed in the sprayer and is configured to separate a refrigerant entering the sprayer through the evaporator inlet into a gas phase and a liquid phase. In the distributor, the centrifugal gas-liquid separating element is disposed in the sprayer, so that a two-phase refrigerant entering the sprayer through the evaporator inlet can be better separated under dual effects of the gravity and the centrifugal force.

Abstract: A cooling system for a hybrid vehicle that cools cooling medium for an air conditioner without reducing a driving performance, irrespective of a running condition. A detector detects data relating to operating conditions of a high-current device cooling circuit, a supercharger cooling circuit, a high-current device, an engine, a supercharger, and the hybrid vehicle. A controller selects one of a first water passage and a second water passage by manipulating a control valve based on the data collected by the detector, in such a manner as to maximize an amount of heat transferred from the cooling medium to high-current device cooling water or supercharger cooling water.