Abstract: A smart water heater system (SWHS) for a domestic water system having a plurality of fixtures has a water tank having a cold water inlet and a heat source configured to heat the cold water. The SWHS may also have a mixing valve to blend cold water with the hot water to produce blended water, wherein the blended water is directed to the domestic water system. The SWHS may have a controller in communication with the mixing valve configured to identify which fixture is being used when the domestic water system is drawing water from the water tank, determine an average water temperature utilized by each fixture, and adjust the mixing valve based on which fixture is identified such that a temperature of the blended water is generally equal to the average water temperature for the identified fixture.

Abstract: A wall-mounted air conditioner indoor unit includes a housing having a front housing and a rear housing, main air intake portions formed on the housing, a mixed air outlet formed on a lower portion of the front housing, a non-hot exchange air inlet formed on the rear housing, and an air delivery apparatus disposed inside the housing. The hot exchange air passage has an upper portion with a size greater than that of its lower portion. A volute and a centrifugal fan located inside the volute are disposed inside the housing and above the air delivery apparatus. An air output portion of the volute faces the hot exchange air passage, and includes a surrounding portion extending to the air delivery apparatus and surrounding the hot exchange air passages, and air mixed cavities are formed between the surrounding portion and the hot exchange air passages.

Abstract: A refrigerator may include a cabinet configured to form a storage compartment; a rear panel configured to form a rear wall of the storage compartment and have a cooling air outlet hole for discharging cooling air toward the storage compartment; a fan housing configured to couple to the rear panel and install a fan for generating a circulation of the cooling air therein; an outlet port configured to be formed in the fan housing and discharging the cooling air supplied by the drive of the fan; and a drawer configured to be withdrawn forward from an inside of the storage compartment. The drawer may include a drawer main body configured to form a storage space; a divider provided movably in the interior of the drawer main body and partitioning the storage space into a first space part and a second space part; and a sealer device configured to be provided on at least one side of the divider and sealing the first and second space parts each other.

Abstract: A core unit 1 of a heat exchanger includes a plurality of core plates that are stacked on one another to alternately constitute oil passages 10 and cooling water passages 11, in which oil that is heat-exchanged in the core unit 1 is guided to an outlet port 23 after passing through a top connecting passage 18 and an oil outlet passage L3, and in which part of the oil is led from a lower end of an upper/lower oil passage L2 is guided to the outlet port 23 through an auxiliary passage 24, so that the amount of oil flowing in the oil outlet passage L3 is reduced thereby reducing a passage resistance.

Abstract: A thermal management system for a vehicle includes a coolant loop routed through a traction battery, a battery chiller, a power electronics device, and a radiator. The system also includes a battery bypass valve in the coolant loop configured to, in a bypass position, bypass the traction battery and the battery chiller. The system includes a controller programmed to, in response to a demand for cabin cooling being greater than a predetermined demand, operate the battery bypass valve in the bypass position.

Abstract: A cooling system in which an ACS (air cycle system) turbine may be driven by high pressure air from a turbo-fan engine and a VCS (vapor cycle system) having an evaporator and a VCS refrigerant compressor may be driven by the ACS turbine. Fluid of the chilled fluid reservoir, which may be chilled fuel, may be circulated through and cooled in the evaporator. In some embodiments, the ACS turbine may be coupled to the VCS refrigerant compressor by a magnetic coupling.

Abstract: A power-generating system comprising an energy-converting module that converts non-electrical waste energy generated by one or more components of an HVAC system into electrical energy, and, a control module that directs the electrical energy to one or more electricity-consuming components of the HVAC system.

Abstract: A heat transfer tube includes a twisted baffle arranged in an inner wall of the tube. The twisted baffle extends spirally along an axial direction of the heat transfer tube. The twisted baffle is provided with a non-through gap extending along an axial direction of the heat transfer tube from an end to the other end of the twisted baffle. A cracking furnace uses the heat transfer tube. The heat transfer tube and cracking furnace have good heat transfer effects and small pressure loss.

Abstract: A grey water heat recovery apparatus has first and second passes arranged in counter-flow orientation. The heat recovery apparatus is made from commonly available materials. It has a hot side for grey water, and a cold side for fresh water under pressure. The heat recovery apparatus extracts heat from grey water to pre-heat water for a water heater. The fresh water is carried in passes in series, each pass being immersed in a grey water sump in a plastic pipe. The water level in the sump is high enough to immerse the dominant portion of the fresh water pass in grey water. Both ends of the fresh water coil are carried out through the same upper end pipe closure, without a penetration in the pipe wall. The entire assembly may be enclosed in a unitary external housing with easily accessible connection fittings.

Abstract: The invention relates to a method for cleaning a plate heat exchanger, in which method the plate pack (2) of the plate heat exchanger is removed from the outer casing, the plate pack (2) is stretched in its longitudinal direction so that the spaces between the plates of the plate pack increase, and then the plate spaces of the plate pack are cleaned.

Abstract: An HVAC system, comprising a plurality of sensors, a tandem compressor comprising a first compressor and a second compressor, and a controller communicatively coupled to the plurality of sensors and the tandem compressor. The controller may determine a first interruption of power to the tandem compressor and identify a sensor corresponding to the first interruption of power. The controller is further operable to determine that the first interruption of power was caused at least in part by the refrigerant associated with the first compressor exceeding a tolerance condition. The controller may also reconfigure the tandem compressor, wherein on or off settings of the first compressor and the second compressor are determined based on a required load operation of the tandem compressor and the determination that the first interruption of power was caused at least in part by the refrigerant associated with the first compressor exceeding the tolerance condition.

Abstract: A thermal valve unit is provided for use with an oil filled screw compressor. The thermal valve unit can be affixed to an exterior pipe segment and can include a thermally responsive element in thermal communication with compressed air traversing through the pipe segment. The valve unit can include a movable valve member actuated by the thermally responsive element that opens and closes oil passages to selectively route oil either to a heat exchanger prior to being delivered to the oil filled compressor, or directly to the compressor without passing through the heat exchanger.

Abstract: A quench-cooling system has a primary quench cooler as a double-tube heat exchanger, a tube bundle heat exchanger as a secondary quench cooler. A tube bundle is enclosed by a casing, forming a casing room, which is formed between tube sheets arranged at spaced locations. Bundle tubes are held with the tube sheets. Parallel cooling channels, connected with one another, have a rectangular tunnel geometry formed (i) from the thin tube sheet, separating a gas side from a water/steam side and connected to a ring flange, which is connected to the casing of the enclosed tube bundle; (ii) from parallel webs, arranged on the tube sheet, separating individual water/steam flows from one another; and (iii) from a covering sheet, provided with openings for bundle tubes and defining the flow in the tunnel arrangement of the cooling channels.

Abstract: Various implementations disclosed herein include a thermal management system suitable electronic devices. In some implementations, a thermal management system includes an air guide and a cage wall, which together provide: an air intake having a first airflow area to produce a first air pressure; an airflow constriction, following the air intake, having a second airflow area smaller than the first airflow area to produce a second air pressure, and defining a first region; and an outlet following the airflow constriction having a third airflow area greater than the second airflow area to produce a third air pressure. The device cage has at least one aperture in the first region. The second air pressure is less than the first air pressure and the third air pressure and is sufficiently low to draw heated air from within the device cage through the at least one aperture to be expelled through the outlet.

Abstract: A heat pump device includes an air conditioning control device configured to switch the heat pump device among a plurality of operation modes including an air-heating operation mode in which an indoor heat exchanger serves as a radiator and an outdoor heat exchanger serves as a heat absorber, and an air-cooling operation mode in which the indoor heat exchanger serves as a heat absorber and the outdoor heat exchanger serves as a radiator. The air conditioning control device switch a refrigerant pipe such that refrigerant is, in the air-cooling operation mode, supplied to part of the outdoor heat exchanger serving as a refrigerant inlet in the air-heating operation mode.

Abstract: Disclosed herein is a heat pump system for a vehicle having a battery module and an electric module. The heat pump system includes: a first cooling line connected to the battery module and having a coolant flowing therein; a chiller disposed on the first cooling line and connected to a refrigerant line of an air conditioning system through a connection line, and exchanging heat between a coolant selectively introduced therein and a refrigerant to control a temperature of the coolant; a cooling system including a radiator connected to a cooling line and a first pump circulating the coolant along the second cooling line so as to cool an electric module, and connected to the first cooling line through a first valve; and a bypass line selectively connecting the connection line and the refrigerant line to each other through a second valve provided on the refrigerant line.

Abstract: An actuation method of a refrigerating machine (10) provided with an economizer apparatus (16) and including an auxiliary laminating member (18) having the opening adjustable for modulating a tapping flow rate of refrigerating fluid flowing through the economizer apparatus (16) including a checking phase of the value of the condensing temperature (Tc) compared to a first threshold value (Tc-max); a first adjustment phase of the opening of the auxiliary laminating member (18) in order to keep the temperature of said tapping flow rate at the entrance of the compressor (15) of the refrigerating machine (10) substantially equal to a predetermined overheating value, if the condensing temperature (Tc) is lower than the first threshold value (Tc-max); a second adjustment phase of the opening of the auxiliary laminating member (18) depending on the value of the condensing temperature (Tc).

Abstract: An active charge control (ACC) in an air conditioner has a first portion of refrigerant passing into a compressor and a second portion held within the ACC. The first portion is substantially vapor and the second portion substantially liquid. Lubricant is included in both portions for lubricating the compressor. A lubricant mechanism includes a heat exchanger having a primary pathway thermally connected with the compressor and a secondary pathway operable between the ACC and the compressor. The secondary pathway transfers the refrigerant second portion to the compressor. The fluid inlet of the compressor retains liquid refrigerant. The secondary pathway delivers the refrigerant and the lubricant from the ACC to the compressor such that heat energy from the primary pathway is transmitted to the liquid refrigerant and lubricant in the secondary pathway evaporating the refrigerant in the secondary pathway such that refrigerant vapor and lubricant are sent to the compressor.

Abstract: An assembly has a two-stage cryogenic refrigerator and an associated mounting arrangement, and a sock having first and second stages corresponding to first and second stages of the refrigerator, with the first stage of the refrigerator being in thermal contact with the first stage of the sock and the second stage of the refrigerator being in thermal contact with the second stage of the sock.

Abstract: A keel cooler assembly comprising a coolant tube including a plurality of turbulence enhancers for improving the heat transfer of the coolant without substantially increasing pressure drop of the coolant. In one embodiment, the turbulence enhancers are provided for generating turbulent wakes in the coolant for disrupting laminar boundary layers for improving heat transfer. In another embodiment, the turbulence enhancers are provided for generating and propagating turbulent vortexes in the coolant to enhance mixing of the bulk coolant for improving heat transfer. In other embodiments, turbulators, including inserts or impediments, are provided having various configurations and being arranged in predetermined patterns for enhancing turbulence of the coolant for improving keel cooler heat transfer efficiency without substantially increasing pressure drop.