453 results about "Condenser (heat transfer)" patented technology

A refrigeration cycle is connected to a supercritical carbon dioxide (sCO2) power cycle by incorporating a CO2 condenser which is also the refrigeration cycle evaporator. The heat rejected by the carbon dioxide is absorbed by the refrigerant in the CO2 condenser. Work is done on the refrigerant to raise its temperature above the local ambient temperature. The heat absorbed from the power cycle and the work required to raise the refrigerant temperature is rejected to the ambient environment, which may be either air, earth, or water. This results in improved efficiencies in carbon dioxide power cycles without regard to the ambient temperature by forcing a transcritical phase change even when ambient temperatures are above the carbon dioxide critical point. A two-phase heat transfer on both sides of the CO2 condenser further improves efficiency of the sCO2 power cycle.

A refrigeration system includes a compressor, a condenser, a heat transfer component, and a refrigerant loop arranged to allow a flow of a refrigerant fluid. The compressor, the condenser, and the heat transfer component are connected in the refrigerant loop. The system further includes a bypass path extending between an output side of the compressor in the refrigerant loop and an input side of the heat transfer component in the refrigerant loop. A bypass valve is connected in the bypass path. A control circuit is in communication with the bypass valve. The control circuit is configured to open the bypass valve to allow the refrigerant fluid to pass to the heat transfer component thereby increasing the refrigerant fluid provided to the heat transfer component and artificially increasing a load on the refrigeration system. Other examples refrigeration system and examples methods are also disclosed.

The invention discloses a microchannel condenser flow distribution global simulation method and system, and relates to the field of microchannel condenser flow distribution calculation. The method comprises the following steps: firstly, constructing a heat transfer and resistance model and forming a single-channel model by combining the size and structure of a parallel channel of the condenser and working medium flow heat exchange characteristics, and constructing a shunting and converging numerical model according to an inlet and outlet area structure of the condenser; secondly, numerical simulation is conducted on the division and convergence numerical model, and stable initial field distribution is obtained; then, determining the mass flow rate of each channel based on the shunting initial field, calculating the back pressure of the channel by taking the mass flow rate as the inlet boundary condition of a confluence model, calculating the inlet pressure of the channel through a single-channel model, and updating the outlet boundary of the shunting model; and finally, iterating the process until the channel mass flow error is smaller than a limit value, obtaining the distribution of the sub-confluence three-dimensional physical field and the one-dimensional flow heat exchange parameters and the heat exchange amount of the parallel channels, and checking whether the heat exchange amount meets the design requirements or not. The method gives consideration to calculation efficiency and precision, can provide support for structure optimization of the micro-channel condenser, and is suitable for micro-channel condenser design in the fields of refrigeration equipment, air conditioning systems and the like.

A thermomodulating heat pipe is provided including a heat pipe envelope having a capillary wick extending substantially continuously the full length of the heat pipe and a void space interior of the capillary wick. The heat pipe envelope has a nominal evaporator section, a nominal condenser section where the nominal condenser section includes an active condenser portion and an inactive condenser portion, and a reservoir section extending from the inactive condenser portion. At a nominal condition, a heat pipe fluid is provided with a liquid phase filling the capillary wick and a vapor phase filling the void space of the nominal evaporator section and the active condenser portion, a non-condensable gas filling the void space of at least the reservoir section and the inactive condenser portion. Depending on thermal conditions, both prograde and retrograde heat transfer are enabled.

The invention relates to the technical field of thermal power generation, in particular to a direct air cooling condenser fouling thermal resistance estimation method combined with a scaling mechanism, and aims to realize stable and accurate real-time estimation of the fouling thermal resistance of a condenser. The method includes the steps that operation parameters of the direct air cooling unit are collected and preprocessed to form a continuous time sequence; calculating multiple groups of cleaning total heat transfer coefficients based on the cleaning period operation parameters, training a machine learning model based on the cleaning total heat transfer coefficients, and establishing a cleaning heat transfer coefficient reference model; calculating an actual total heat transfer coefficient based on the current operation parameters, inputting the reference model to obtain a corresponding cleaning coefficient, and calculating initial fouling thermal resistance according to the cleaning coefficient; and establishing a discrete linear recursion physical filtering model based on a dirt deposition-denudation mechanism, identifying model parameters on line by taking the initial dirt thermal resistance as an observed quantity, performing physical constraint filtering on the model parameters, and outputting a final dirt thermal resistance online estimated value.

The utility model discloses an R290 heat management system based on secondary loop integrated waste heat utilization, relates to the field of electric automobile heat management, and aims to solve the problems that a heat management system in the prior art is high in cost, large in heat transfer loss, incapable of coping with an extremely low temperature environment and insufficient in single-core refrigerating capacity. A six-way water valve and a seven-way water valve are combined with a three-way valve to form a heat management pipeline, the heat management pipeline exchanges heat with an R290 circulation pipeline, a water-cooling condenser and a chiller battery cooler can be fully operated, a system connecting pipeline and a fluid flow direction are flexible and controllable, the control precision is high, a cold air core body and a warm air core body can be connected in series during refrigeration by changing pipeline connection, and the refrigeration efficiency is improved. Therefore, double-core refrigeration is carried out, and the refrigeration capacity is high; by proportionally adjusting the cooling liquid flow of the two loops, accurate temperature control after liquid mixing is realized, temperature impact on the battery is avoided, and the heat exchange efficiency is higher.

The invention relates to a process for extracting alcohols from an initial mixture (1) comprising alcohols in aqueous phase, with:a distillative separation by an isopropanol-butanol distillation column (III) equipped at the top with a condenser (c3), intended for separating said mixture into a water-isopropanol azeotrope stream (6) at the top and into a water-butanol azeotrope stream (7) at the bottom,a distillative separation intended for separating the water-butanol azeotrope stream into water and butanol, by a hetero-azeotropic distillation system comprising at least one water-recovering water column (IV) and at least one butanol (9)-recovering butanol column (V) equipped with a reboiler (r5),such that a heat transfer is performed from the top water-isopropanol azeotrope stream (6) entering the condenser of the isopropanol-butanol distillation column (III), to the stream entering the reboiler of the butanol column (V).

The invention relates to the technical field of condenser self-cleaning, in particular to an air conditioner condenser self-cleaning structure based on bionic fins, which comprises a fixing frame, mounting plates are fixedly connected to two ends of the fixing frame, a plurality of groups of fins are connected to the outer side of the fixing frame, a copper pipe is arranged on one side of the plurality of groups of fins, and a sealing groove is fixedly connected to the outer side of the copper pipe. A reciprocating lead screw is rotationally arranged on one side of the sealing groove, a guide pipe is connected to the outer side of the reciprocating lead screw, and a connecting pipe A is connected to one end of the guide pipe. An air pressure pipe is arranged on one side of the multiple sets of fins. Therefore, dust particles attached to the surfaces of the fins are subjected to periodic external force, the adhesive force between dust and the fins is destroyed, the dust is made to fall off from the surfaces of the fins more easily, the surfaces of the fins are kept clean, meanwhile, convective heat exchange between air and the fins is enhanced, and the heat exchange efficiency in the heat dissipation process is improved.

The invention discloses a heat pipe radiator and an air conditioner outdoor unit, the heat pipe radiator comprises an evaporator and a condenser, and the evaporator is a U-shaped pipe; according to the parallel flow micro-channel heat exchanger of the condenser, a plurality of flat pipes arranged in parallel are arranged between an upper collecting pipe and a lower collecting pipe, and fins are arranged between the adjacent flat pipes; the U-shaped pipe and the condenser are integrally designed, pipeline connection between the evaporator and the condenser is simplified, the number of welding spots is greatly reduced, meanwhile, an efficient, compact and reliable heat pipe circulation loop is constructed, and when the heat pipe is applied to heat dissipation of a controller of an air conditioner outdoor unit, the heat pipe has the remarkable advantages in the aspects of heat transfer efficiency, structural layout, reliability, environmental adaptability and the like.

The invention discloses a polyolefin elastomer solution devolatilization system and a polyolefin elastomer solution devolatilization method. The system comprises a horizontal double-shaft kneading devolatilization device and a double-screw extrusion devolatilization machine, a high-temperature atomizer is arranged at a feeding hole of the horizontal double-shaft kneading devolatilization device; the high-temperature atomizer comprises an atomizing nozzle, a gas heater and an air blower; a devolatilization opening is formed above the horizontal double-shaft kneading devolatilization device and is sequentially connected with a condenser and a vacuum pump; a discharge hole of the devolatilization device is connected with a discharge screw rod; a feeding port of the double-screw extrusion devolatilization machine is connected with a discharging screw, a devolatilization port is formed in the upper portion of the double-screw extrusion devolatilization machine and sequentially connected with a condenser and a vacuum pump, and a devolatilized product outlet is formed in the tail of the devolatilization machine. According to the invention, the horizontal double-shaft kneading devolatilization device and the double-screw extrusion devolatilization machine are matched with each other, and the high-temperature atomizer is assisted, so that a large-area heat transfer effect is realized, an efficient devolatilization effect is further realized, and a polymer product with lower residual volatile component content is obtained.

The invention belongs to the technical field of 3C product manufacturing, and discloses a phase change heat transfer middle frame and a manufacturing method thereof.The phase change heat transfer middle frame comprises a middle frame body, and a plurality of through holes are formed in the surface of the middle frame body; the phase change heat transfer part is installed on the inner wall of the middle frame, and the phase change heat transfer part is used for conducting uniform heat dissipation on the interior of the middle frame; the phase change heat transfer component comprises two adaptive frames and a phase change heat transfer mechanism located in the centers of the two adaptive frames. The phase change heat transfer mechanism comprises a pipeline, and a mounting assembly, an evaporator, a liquid storage device and a condenser which are respectively mounted on the pipeline, through the cooperation of the middle frame, the pipeline, a capillary structure and other structures, rapid and uniform heat dissipation is realized, and the problems that an existing device is difficult to conduct heat to a screen through a hinge, and the heat dissipation effect is poor are solved. Although the heating element has basic heat conduction capability, the heating element is limited by the characteristic of poor temperature uniformity, and heat is easy to accumulate at the corresponding position of the heating element.

Provided are an air separation device and an air separation method that have high argon yield without increasing the heat transfer area of a deoxidized argon condenser that generates reflux liquid in an argon tower generating deoxidized argon to be used as a raw material in a high-purity argon tower. Specifically provided is an air separation device comprising: an argon tower (700) that distills argon-containing oxygen drawn from a low-pressure tower (600) and generates deoxidized argon from which oxygen has been removed; a deoxidized argon condenser (400) that generates reflux liquid in the argon tower (700); a high-purity argon tower (800) that distills deoxidized argon and extracts pure argon from which nitrogen has been removed; a high-purity argon condenser (900) that generates reflux liquid for the top portion of the high-purity argon tower (800); a high-purity argon evaporator (910) that generates ascending gas for the bottom portion of the high-purity argon tower (800); a pipeline (622) that sends liquid nitrogen to the high-purity argon condenser (900) as a cooling medium; and a pipeline (42) that sends liquid derived from a high-pressure tower (500) to the high-purity argon evaporator (910) as a heating medium.

The invention relates to the technical field of electric vehicle thermal management, and discloses an electric vehicle thermal management system and a control method thereof. The system comprises a compressor, multiple sets of refrigerant loops and cooling liquid loops, a three-way proportional valve, an electronic expansion valve and a controller, the refrigerant loops achieve heat transfer through the compressor and a water-cooled condenser, and the cooling liquid loops distribute heat to a passenger compartment and a battery through an electronic water pump and the three-way proportional valve; according to the control method, a first, second or third initialization mode is selected based on the outside environment temperature, and multi-loop cooperative control is achieved by adjusting the opening degree of the valve, the duty ratio of the water pump and the rotating speed of the compressor. The R290 refrigerant is adopted to broaden the operating temperature range, electric drive waste heat recovery and passenger compartment waste heat utilization are combined, the low-temperature heating energy efficiency ratio is remarkably increased, the problems that an existing heat pump system is difficult to start at the extremely low temperature, heating is delayed, and energy consumption is too high are solved, and rapid temperature rising and accurate temperature control of the passenger compartment and a battery in the environment of-30 DEG C or above are achieved.

The invention discloses an evaporator and cold drink equipment, the evaporator comprises an evaporation cylinder, an air return pipe and a communicating pipe, the air return pipe and the communicating pipe are communicated with the evaporation cylinder, an evaporation cavity is arranged in the evaporation cylinder, the air return pipe is communicated with an external compressor, an air return section of the air return pipe is connected with the evaporation cylinder and is communicated with the evaporation cavity, and the communicating pipe is communicated with the communicating pipe. The communicating pipe is communicated with an external condenser or a throttling component, a spraying section of the communicating pipe is connected with the air return section and communicated with the evaporation cavity, an oil return part is arranged in the evaporation barrel, the outlet end of the oil return part can be communicated with the air return section, the inlet end of the oil return part is close to the inner side wall of the evaporation barrel, and the oil return part is communicated with the oil return part. And the oil return piece can rotate along with the evaporation cylinder. The cold drink equipment comprises the evaporator. By adopting the oil return device, oil can be effectively returned, and the oil return efficiency is improved, so that the normal operation of the compressor and the heat transfer efficiency of the evaporator are ensured, and the external space of the evaporator is not occupied.

The invention relates to a liquid cooling heat dissipation system based on double-circulation dynamic switching and a control method, and belongs to the technical field of data center heat dissipation. The liquid cooling heat dissipation system comprises a server cabinet, an indoor CDU and an outdoor heat dissipation unit; the outdoor composite heat dissipation unit comprises a multi-channel condenser; the multi-channel condenser is provided with a plurality of independent flow channels, and the independent flow channels are opened or closed according to different temperatures. According to the invention, through innovative pipeline architecture and thermal path design, collaborative optimization of heat dissipation efficiency and space utilization rate of the high-density data cabinet is realized. The system adopts a graded tandem type heat transfer mode, chip-level high-heat-flux heat dissipation and cabinet-level low-grade waste heat recovery are integrated into the same circulating system, meanwhile, the heat dissipation requirements of different seasons and external temperatures are met through dynamic flow path switching of an outdoor module, the energy efficiency is remarkably improved, and equipment redundancy is reduced.

The invention relates to the technical field of heat exchangers, and discloses a shell-and-tube condenser capable of automatically removing a liquid film, which comprises a shell, one end of the shell is provided with a cold water inlet, the other end of the shell is provided with a cold water outlet, the upper end of the shell is provided with an air inlet, and the lower end of the shell is connected with a liquid outlet pipe; a plurality of air uniformizing holes are formed in the air uniformizing cover, the air uniformizing cover divides an inner cavity of the shell into a first cavity body and a second cavity body, a second finned tube is arranged in the first cavity body, a first finned tube is arranged in the second cavity body, and liquid guide fins are arranged on the outer wall of the first finned tube. The finned tube I is arranged, and the liquid guide fins are additionally arranged on the finned tube I, so that the continuity of a liquid film is actively destroyed, the liquid film does not accumulate and grow outside the tube, but accumulates in the liquid guide fins to drop in a liquid drop form, and the problem of thermal resistance caused by liquid film coverage is effectively solved; and the heat transfer efficiency of the whole equipment is obviously improved.

The invention discloses a spraying type ice maker which comprises a top cover, a shell and a base plate, a compressor and a condenser which are located on one side of the base plate and arranged side by side are installed on the lower side of the shell, and a fan which directly blows air to the outer side of the shell is installed beside the condenser; a cold water storage tank with a 7-shaped hopper-shaped cavity structure is mounted in the shell beside the compressor and the condenser, and the top end of the cold water storage tank is sealed by a top cover; a spiral automatic ice discharging device used for automatically supplying ice blocks outwards is obliquely arranged in the middle of the cold water storage box. A spraying ice-making device located on the upper portion of the rear side in the cold water storage box is arranged on the upper side of the spiral automatic ice discharging device. A spraying water pump for pumping ice water stored at the bottom of the cold water storage tank to the spraying ice-making device through a pipeline to perform spraying ice-making is also mounted on the outer wall of the storage cavity at the lower part of the cold water storage tank; the whole machine is small in size, capable of automatically controlling ice discharging, high in ice making efficiency and suitable for home use, the evaporator is integrally formed through the die-casting technology, and the heat transfer efficiency of the evaporator and the ice block quality are improved.

The invention relates to a converter station waste heat recovery management optimization model, and belongs to the field of converter station waste heat recovery. The method mainly comprises the steps of thermal resistance analysis, scaling process control, turbulence enhanced heat transfer, online monitoring and dynamic adjustment, cleaning period optimization and the like. The waste heat recovery performance is optimized through the measures of analyzing the total heat transfer resistance of the condenser, restraining dirt deposition, arranging a turbulence promoting device to enhance the heat transfer efficiency and the like. And meanwhile, real-time monitoring and dynamic optimization of operation conditions are carried out by virtue of a computational fluid mechanics simulation and dirt growth coupling model. And finally, the scaling period is prolonged through a turbulence strengthening device and a surface modification technology, and the waste heat recovery efficiency of the converter station is improved. According to the method, the dirt deposition rate can be effectively reduced, the heat energy recovery efficiency and the equipment operation safety are improved, and efficient use of energy is achieved.

The utility model discloses an anti-overflow expansion tank and an anti-oil-overflow refrigeration temperature control system, the anti-overflow expansion tank comprises an expansion tank main body, the expansion tank main body is provided with a liquid adding port, the expansion tank is provided with a first interface and a second interface, the anti-overflow expansion tank further comprises an exhaust valve and a one-way valve, the first interface is connected with an inlet of the exhaust valve, and an outlet of the exhaust valve forms an exhaust port of the expansion tank; an outlet of the one-way valve forms a main outlet of the expansion groove; comprising the anti-overflow expansion tank and further comprises a medium outlet and a medium inlet, and the medium inlet is sequentially connected with a cold storage tank, a circulating pump, a plate heat exchanger, a compressor, an oil separator, a condenser, a drying filter and an expansion valve through pipelines, then enters the plate heat exchanger and is connected to the medium outlet; by modifying a common expansion tank, heat-conducting oil overflowing from the expansion tank due to backward flowing can continuously stay in the expansion tank, so that the working environment is not polluted, the waste of the heat-conducting oil is avoided, and waste oil is avoided.

A heat exchanger module includes a skin condenser and a skin evaporator. The skin condenser includes an inner condenser plate, an outer condenser plate coupled to the inner condenser plate and a condenser tube channel formed on one of the inner condenser plate and / or the outer condenser plate. The evaporator includes an inner evaporator plate, an outer evaporator plate coupled to the inner evaporator plate, and an evaporator tube channel formed on one of the inner evaporator plate and / or the outer evaporator plate. The heat exchanger also includes an insulation layer extending between the inner condenser plate and the inner evaporator plate. Each of the plates that form the skin condenser and / or evaporator can be formed from different materials and / or have different material thicknesses to reduce heat transfer through the insulation layer from the condenser to the evaporator while also promoting heat transfer through natural convection with surrounding air.

A thermal management system for electric construction machinery, the thermal management system comprising a battery pack (1), a first liquid storage tank (2), a first liquid pump (3), a plurality of first air-conditioning units (4) arranged in parallel, a heat dissipation group (5) and a first controller (6), wherein the battery pack provides a driving force; the first liquid storage tank stores a circulating medium; the first liquid pump is in communication with the first liquid storage tank; the first liquid pump is connected to the battery pack to form a first circulating loop (100); the first liquid pump drives the circulating medium to flow through the battery pack, such that the circulating medium exchanges heat with the battery pack; each first air-conditioning unit comprises a compressor (41), a condenser (42), a first throttling device (43) and a first evaporator (44), and the first air-conditioning units reduce the temperature of the circulating medium in the first circulating loop; the heat dissipation group dissipates heat from the condensers in the first air-conditioning units and / or reduces the temperature of the circulating medium flowing through the battery pack; and the first controller controls, on the basis of the temperature of the battery pack, the plurality of first air-conditioning units and the heat dissipation group to start and stop. The thermal management system effectively reduces the number of heat dissipation groups, thereby facilitating an improvement in the heat transfer efficiency of the system, and improving the energy consumption of a whole vehicle. In addition, further disclosed are a control method and electric construction machinery.

The invention discloses a water chilling unit multi-component coupling modeling and dynamic simulation method based on Simscape, and belongs to the technical field of heating ventilation air conditioners, multi-physical field simulation models of a compressor, a condenser, an evaporator and a thermostatic expansion valve are constructed in a modular mode, and four main stages are achieved in a system level. State evolution and thermal conversion of compression, condensation, throttling and evaporation; the modeling process is combined with thermodynamics, fluid mechanics and heat transfer theory principles, and adjustable modeling is carried out on internal thermophysical property equations, structural parameters and flow boundaries of all assemblies by utilizing a Matlab / Simscape language, so that a complete closed-loop dynamic simulation system is formed. By adopting the Simscape-based multi-component coupling modeling and dynamic simulation method for the water chilling unit, the integration of component-level modeling, system-level coupling, adjustable parameter setting and simulation checking can be realized, and the accuracy, universality and engineering adaptability of the model are improved.

A two-phase immersion cooling device includes a coolant tank defining a liquid region for retaining a working fluid and a vapor region above it. A condenser is at least partially disposed in the vapor region. A heat transfer enhancer is positioned in the liquid region and thermally coupled to a heat dissipating component. The heat transfer enhancer includes a directed flow opening, an upper surface, and containment walls. A redirection flow orifice is formed on the upper surface or the containment wall. A pressure enhanced region is adjacent to the upper surface and in communication with a boiling region below. An accelerated flow region is formed beneath the directed flow opening, and a recycling flow region is defined between a containment wall and a tank side wall.

Thermodynamic water heater and water heating method implementing it The invention relates to a thermodynamic water heater (1) comprising a heating device (2) and a tank (3) with a container (3') for the water to be heated / heated, the tank (3) also comprising a condenser circuit (4) supplied by the heating device (2) forming a closed loop of heat transfer fluid circulation, and with an upper inlet end (4') and a lower outlet end (4'').A water heater characterized in that said condenser circuit (4) comprises a main hot heat transfer fluid supply inlet (5) and another secondary hot heat transfer fluid supply inlet (51), said secondary supply inlet (51) corresponding to an intermediate connection point (PR) of said condenser circuit (4), located between its upper inlet end (4') and its lower outlet end (4'') and defining two portions of the condenser circuit (4) corresponding respectively to two superimposed volumetric zones (Z1 and Z2) within the internal volume of the container (3'), and in that each of the hot heat transfer fluid supply lines (6, 61) connecting the heating device (2) to the supply inlets (5, 51) comprises a control valve (7, 71). Figure to be published with the abbreviation: Fig. 1.

The present application relates to the field of new energy vehicle thermal management technology, provide a kind of heat management system of waste heat utilization, including waste heat source, first heat exchanger, condenser and evaporator, first heat exchanger is connected with waste heat source, for absorbing the heat transferred by waste heat source;Condenser and first heat exchanger are connected with first injection line and second injection line in parallel, first injection line is provided with first injector, and second injection line is provided with second injector;Evaporator and condenser are connected with heat absorption line, for absorbing the heat of evaporator, and heat recovery line is arranged between evaporator and condenser, for returning the heat of evaporator to condenser;The heat management system provided by the present application utilizes double-injector coupling to carry out the heat conversion of waste heat, converts thermal energy into kinetic energy, improves refrigeration effect, and realizes the step-by-step utilization of energy.

The utility model discloses large-capacity plastic garbage pyrolysis equipment, and relates to the technical field of garbage recovery and treatment equipment. The plastic garbage pyrolysis equipment comprises a feeding bin, a pyrolysis pipe, a gas-solid separation bin, a slag bin, a condenser, an oil-water separator and a steam generator, the pyrolysis pipe is provided with a garbage input end, a steam input end and a pyrolysis material output end. According to the plastic garbage pyrolysis equipment disclosed by the utility model, garbage is directly blown through high-temperature steam, so that the heat transfer efficiency is greatly improved, the pyrolysis speed is greatly accelerated, high-speed large-capacity garbage treatment can be realized, and the problems of low treatment capacity and low heat efficiency of the existing garbage pyrolysis equipment are solved; and the pyrolysis pipe is adopted for pyrolysis, and the inner wall of the pyrolysis pipe is difficult to form wall adhesion and coking under strong blowing of steam and oil gas, so that the problem that the existing garbage pyrolysis equipment is easy to adhere to the wall is solved.

The present invention belongs to the technical field of heat exchange equipment, and discloses a heat exchanger using a combined liquid dispersion device and an absorption unit to which the heat exchanger is applied. The absorption unit includes an absorber, a regenerator, an evaporator, and a condenser. The evaporator and the absorber are arranged vertically in the same cylinder body, and the condenser and the regenerator are arranged vertically in the same cylinder body. The absorber, the regenerator, and the evaporator adopt a heat exchanger structure of a combined liquid dispersion device of a liquid drip device and a liquid spray device, and the liquid is collected in a conical liquid collecting tank, so that problems such as liquid flooding of pipes and cavitation of the liquid delivery pump caused by liquid sloshing due to the inclination or sway of the unit can be avoided. The heat transfer tubes and the tube sheets adopt special materials and an expanding and welding processing technology, so that the liquid can be evenly distributed and dispersed under the inclined or swaying state of the marine lithium bromide absorption unit, and problems such as refrigerant pollution and seawater corrosion of the unit are solved, the stability of the unit operation is ensured, and the effective utilization of energy is realized.

The present invention discloses a self-driven vapor-liquid separation and enhanced condensation heat transfer printed circuit board condenser, which includes a heat exchange core, hot and cold side working medium inlet and outlet headers, hot and cold side working medium inlet and outlet joints, and a hot side working medium non-condensable gas extraction port. The heat exchange core is formed by stacking condensation plates through which the hot working medium flows and heat exchange plates through which the cold working medium flows. The condensation plates through which the hot side working medium flows are composed of a number of enhanced condensation units, and the heat exchange plates through which the cold side working medium flows are composed of a number of parallel flow channels. The condenser can achieve vapor-liquid separation in a self-driven manner in a timely manner through the centrifugal force induced by the enhanced condensation unit structure, and gradually discharge the condensate into a dedicated drainage channel, thereby effectively suppressing the deterioration of condensation heat transfer caused by flooding caused by condensation in the tiny channel, thereby significantly improving the condensation efficiency of the condenser. The condenser design is relatively flexible and can meet a wider range of industrial application scenarios.

A climate-controlled transport unit's transport climate control system includes a main heat transfer circuit and a cooler heat transfer circuit. The main heat transfer circuit includes a compressor, a condenser, a main expansion valve, a main evaporator, a cooler expansion valve, and a cooler evaporator. The main evaporator and the cooler evaporator are arranged parallel to each other downstream of the condenser. A working fluid and a second process fluid flow through the main evaporator. The working fluid and a third process fluid flow through the cooler evaporator. The cooler heat transfer circuit includes the cooler evaporator, and the third process fluid is configured to provide auxiliary cooling. Methods of operating the climate-controlled transport unit's transport climate control system include operating in HVACR and cooler mode, operating in HVACR mode, and operating in cooler mode.

A refrigeration cycle apparatus includes a refrigerant circuit in which at least a compressor, a condenser, a first pressure reducer, and an evaporator are connected by pipes. The condenser includes a plurality of heat transfer tubes extending in an up-and-down direction, a first header having a tubular outer wall into which first ends of the plurality of heat transfer tubes are inserted, and a partition plate that is provided from a first end to a second end of the first header in a longitudinal direction, partitions an internal space of the first header into a high-pressure refrigerant passage where the first ends of the plurality of heat transfer tubes are disposed and a low-pressure refrigerant passage where the first ends of the plurality of heat transfer tubes are not disposed, and is configured to exchange heat between high-pressure refrigerant and low-pressure refrigerant in the first header.