63results about How to "Avoid affecting the heat transfer effect" patented technology

The invention discloses a combined screw divert plate tubular heat exchanger, wherein, in one pitch, the screw divert plate is radial divided into inner and outer parts; the central area in the frame has discontinuous inner screw while outside the central area, uses continuous annular screw divert plate to form continuous outer screw; the outer screw divert plate surrounds the inner screw divert plate. For the horizontal heat exchanger, when the medium is accumulated with dirt, the nearby outer screw divert plate is mounted to make the connection at the bottom of heat exchanger, and the outer edge of each connection has a cut at the connected part. The invention can reduce flowing resistance, improve heat exchange efficiency and improve the service life. The invention also provides the method for processing the continuous screw divert plates, to confirm the concentric property of holes of divert plate.

The invention discloses a deep processing method of urban recycled water by using it as industrial cycling cooling water comprising the steps of, the urban recycled water being collected and entering the recycled water pool, then entering pressure type mixer, entering into clarification tank, liming by wet method for softening, condensation, settlement and automatic de-sludging, the output water flowing into the circular double chamber filter, then entering clean water tank through pressure type mixer, the clean water being pumped to the cycling water pump discharge pressure tube after the compensator to be used for re-circulated cooling water system.

The invention discloses a novel two-stage type converter gas waste heat recovery system. The novel two-stage type converter gas waste heat recovery system sequentially comprises a converter (1), a converter flue (2), a high-temperature cyclone separator (3), a fire tube type natural circulation converter gas waste heat boiler (6) and a gas dust removal purification device (7) which are connected. The gas dust removal purification device (7) is connected with a converter gas storage cabinet (9) and a vent stack (10). After gas generated by the converter (1) is subjected to evaporation cooling through the converter flue (2), the temperature is decreased to 800-1000 DEG C from 1400-1600 DEG C; then, the gas enters the high-temperature cyclone separator (3), so that more than 50% of coarse-particle dust in the gas are separated out; afterwards, the gas enters the fire tube type natural circulation converter gas waste heat boiler (6). Through the novel two-stage type converter gas waste heat recovery system, waste heat can be recovered under the condition that zero leakage of smoke is guaranteed, and meanwhile wastewater treatment cost caused in the later period can be reduced.

The invention relates to a horizontal type waste heat boiler of a zinc-containing dust recovery system of a rotary hearth furnace, belonging to the technical field of steel-making waste gas processingdevices. The horizontal type waste heat boiler of the zinc-containing dust recovery system the rotary hearth furnace comprises a boiler body and a boiler cradle, wherein the boiler body is arranged on the boiler cradle; the boiler body is a cavity-shaped structure consisting of a boiler body water-cooling wall and an embedded scraping plate mechanism arranged on the bottom of the boiler body water-cooling wall, the boiler body water-cooling wall consists of a front wall water-cooling wall, a left wall water-cooling wall, a right wall water-cooling wall and a ceiling water-cooling wall, wherein the front wall water-cooling wall is provided with a smoke gas inlet, a rear wall water-cooling wall is provided with a smoke gas outlet, and the ceiling water-cooling wall is sequentially providedwith a smoke gas radiation baffle plate, a radiation tube panel and an overheater; and the boiler cradle is provided with a steam pocket and a circulating pump. The invention can not only solve the problem of tube wall dust adherence, but also recover heat contained in smoke gas as much as possible under harsh conditions.

The invention discloses a horizontal spiral cement cooler, which comprises a support. A horizontal barrel is arranged on the support; a hollow shaft is rotatably arranged in the barrel; a hollow spiral blade which is communicated with the hollow shaft is arranged on an outer circumferential surface of the hollow shaft; a plurality of spray pipes are arranged above the barrel; and a cooling water tank capable of soaking the barrel is arranged under the barrel. The horizontal spiral cement cooler has the advantages of simple structure, reliable operation, good cooling effect, simple and convenient maintenance and operation, low operation and manufacturing cost, and the like, and can be used for cooling powdery high-temperature materials in various industries.

The invention provides an all-in-one cabinet air conditioner and an outdoor cabinet. The all-in-one cabinet air conditioner comprises an indoor unit, an outdoor unit and a case used as a shell of theindoor unit and the outdoor unit. The case is divided by a partition plate into an indoor unit cavity and an outdoor unit cavity which are vertically distributed. The indoor unit cavity is provided with an indoor air outlet and an indoor air return opening. The outdoor unit cavity is provided with an outdoor air outlet and an outdoor air return opening. A water discharge pipe of a water receivingdisk of the indoor unit penetrates through the partition plate and is in lap joint with a condenser of the outdoor unit. A connection pipe between the condenser and an evaporator of the indoor unit penetrates through the partition plate. The all-in-one cabinet air conditioner can solve the problems that an existing outdoor cabinet air conditioner is inconvenient to install and maintain, a connection pipeline between an indoor unit and an outdoor unit is long, materials are consumed seriously, and the structure is not compact.

The present invention provides an evaporation method and apparatus for an easily polymerizing hydrocarbon solution, said evaporation method includes processes that: the easily polymerizing hydrocarbon solution is fed into a main evaporator(1),the evaporated hydrocarbon gas is discharged from the top of the main evaporator(1), the evaporated liquid components are drawn out via a cycle pump(2) from the bottom of the main evaporator(1), part of them being circularly fed into the main evaporator(1) and part of them being fed into a film evaporator(3). The evaporated hydrocarbon gas is then discharged from the top of the film evaporator(3) and the remnant liquid after evaporation is forced to be discharged from the film evaporator(3). The forced circulation evaporator and the film evaporator in this invention combines to realize the evaporation process, the polymeric monomer in the easily polymerizing hydrocarbon solution is not subject to polymerization, thereby improving the evaporation efficiency, maintaining the steady operation, lowering the consume of source and energy.

The invention discloses a medical refrigeration container hot gas defrosting system for temperature and humidity control, and belongs to the technical field of refrigeration plants. The medical refrigeration container hot gas defrosting system for temperature and humidity control is simple and reliable, and temperature and humidity in a refrigeration container meet standard requirements in the overall process. The medical refrigeration container hot gas defrosting system for temperature and humidity control comprises a compressor, the air exhaust end of the compressor is connected with a condenser through an air exhaust pipe, a drying filter is connected to the tail end of the condenser, the output end of the drying filter is connected with a refrigeration capillary pipe, the other end of the refrigeration capillary pipe is connected into an inlet of an evaporator, a liquid storage tank is arranged at an outlet of the evaporator, and the other end of the liquid storage tank is connected with the air inlet end of the compressor through an air inlet pipe; an electromagnetic valve is connected to the air exhaust pipe at the air exhaust end of the compressor and is connected with the condenser in parallel, a defrosting capillary pipe is connected to an outlet of the electromagnetic valve, and the defrosting capillary pipe and the refrigeration capillary pipe are connected in parallel to be connected into the inlet of the evaporator.

The invention discloses a fog dissipation filler. The fog dissipation filler is formed by arranging a plurality of heat exchange sheets, and a first channel and a second channel which are arranged atintervals and are in not communication with each other are formed among the multiple heat exchange sheets; each heat exchange sheet comprises a plurality of baffling surfaces, a flow guide groove anda liquid collecting groove; the flow guide grooves extend outwards from the junction of two vertically adjacent baffling surfaces, flow guide surfaces are formed at the lower parts of the flow guide grooves, and the flow guide surfaces are downwards deflected relative to the baffling surfaces below the flow guide surfaces; and the liquid collecting grooves are defined by the upper portions of theflow guide grooves and the baffling surfaces above the flow guide grooves, and a semi-closed flow guiding space is formed by the liquid collecting grooves and the flow guide grooves above the liquid collecting grooves. The invention further discloses a fog dissipation cooling tower. According to the fog dissipation cooling tower and the fog dissipation filler thereof, water mist in wet and hot aircan be captured more effectively through cooperation of the flow guide grooves, the flow guide surfaces and the liquid collecting grooves, and the demisting water-saving effect is improved.

The invention provides a heat pump air conditioner system and a control method thereof. When the air conditioner system runs in a heating mode, to prevent an outdoor heat exchanger from being frosted,the heat pump system achieves defrosting running through reversing of a four-way valve. During defrosting running, to guarantee indoor comfort, indoor heat supply is guaranteed in the manner of additionally mounting electric heaters. In the heating defrosting process of the air conditioner system, room temperature fluctuation caused by defrosting in the heating process is reduced by controlling switches of a first evaporator, a second evaporator, the first electric heater, the second electric heater, a first evaporation fan and a second evaporation fan, meanwhile, the defrosting time can be prolonged, defrosting of an outdoor unit is achieved more thoroughly, the situation that after the system enters the heating mode again, the heat exchange effect is influenced due to the fact that theoutdoor unit is frosted is avoided, and the heating running efficiency is improved. Thus, the room temperature reduction amplitude in the heating defrosting process is reduced, defrosting of the outdoor unit is achieved thoroughly and reliably, and the heating running efficiency is improved.

The invention discloses a combined screw divert plate tubular heat exchanger, wherein, in one pitch, the screw divert plate is radial divided into inner and outer parts; the central area in the frame has discontinuous inner screw while outside the central area, uses continuous annular screw divert plate to form continuous outer screw; the outer screw divert plate surrounds the inner screw divert plate. For the horizontal heat exchanger, when the medium is accumulated with dirt, the nearby outer screw divert plate is mounted to make the connection at the bottom of heat exchanger, and the outer edge of each connection has a cut at the connected part. The invention can reduce flowing resistance, improve heat exchange efficiency and improve the service life. The invention also provides the method for processing the continuous screw divert plates, to confirm the concentric property of holes of divert plate.

The invention provides a defrosting assistance system of an air-conditioning heat pump unit in extremely-cold working conditions. The defrosting assistance system comprises a water collecting tray anda heating element, wherein the water collecting tray is used for collecting defrosting water when the air-conditioning heat pump unit works in the defrosting mode; and the heating element is used forsupplying heat to the water collecting tray. According to the defrosting assistance system, the effect that defrosting water is timely and thoroughly discharged out of the water collecting tray can be achieved through the reasonable arrangement of the heating element on the water collecting disc. The invention further discloses the air-conditioning heat pump unit and a defrosting method. The air-conditioning heat pump unit is equipped with the defrosting assistance system. The defrosting method is applied to defrosting by using the defrosting assistance system.

A heat exchanger comprises at least five vertically-arranged fins and is characterized in that the upper end surfaces of the fins are in the shape of upright triangle, the bottom surfaces of the fins are in the shape of inverted right triangle, and a water collecting tank is arranged under the right-angle side of the inverted right triangle of every bottom surface. The heat exchanger is safe and reliable in structure, high in heat transfer efficiency, easy to manufacture, install and operate and less in maintenance as well as reduces dust accumulation.

The invention discloses a plate type coupling low-temperature flue gas waste heat recovery device for heating raw water. The device comprises a waste heat recovery unit, a raw water heating unit and connecting pipelines. A closed circulation circuit of phase-change working media in the waste heat recovery unit and the raw water heating unit is formed through the connecting pipelines; the waste heat recovery unit comprises a finned heat pipe exchanger, phase-change working medium flow channels are arranged in finned pipes, and a flue gas flow channel is arranged outside the finned pipes; and the raw water heating unit consists of a plate type steam-water condenser, a steam-water separating steam pocket is arranged on the connecting pipelines between the waste heat recovery unit and the raw water heating unit, and a cold water inlet pipe and a steam outlet pipe of the finned heat pipe exchanger and a steam inlet pipe and a cold water outlet pipe of the plate type steam-water condenser are communicated with the inside of the steam and water separating steam pocket. The waste heat recovery device is compact in structure, high in heat exchange efficiency and working stability and large in effective heat exchange area.

The invention discloses a ceiling air conditioner. The ceiling air conditioner comprises a shell (1) and a centrifugal fan (2) arranged in the shell (1). The centrifugal fan (2) is horizontally arranged in the axial direction and is open downwards. Air inlets (3) are formed in the side wall of the shell (1). An air outlet (4) is formed in the position, corresponding to an outlet of the centrifugal fan (2), of the bottom of the ceiling air conditioner. The outlet of the centrifugal fan (2) is formed in the position of an air outlet (4). According to the ceiling air conditioner, the problem that in the prior art, short circles of air flow are likely to occur when a ceiling air conditioner is under a heating working condition can be solved.

The invention belongs to the technical field of environmental protection, particularly relates to a high-temperature flue gas waste heat utilization device. Aiming at solving the problems that a traditional high-temperature flue gas heat recovery device is generally simple in structure, flue gas is directly introduced into the device for heat exchange, the wall surface of a heat exchange componentis prone to be attached with dust, and then the heat recovery effect is affected, the following scheme is provided. According to the scheme, the novel device comprises a heat exchange tank, a water outlet is formed in the bottom end of the heat exchange tank, and a water outlet hopper is welded to the inner wall of the water outlet. According to the novel device, by arranging an automatic drainage mechanism, when the temperature of water in the heat exchange tank continuously rises, and the internal pressure rises to a certain value, a sealing top plate is pressed to be separated from a fixing ring, so that the water flows out; and in the process of losing magnetic adsorption of magnetic blocks, the water flows out and impacts, along with the water outlet hopper, a flow dividing blockingpiece and a supporting plate with a semispherical plate, so that continuous pulling force is generated on the sealing top plate, and then it is guaranteed that the sealing top plate is far away from the fixing ring, and the automatic drainage is smoothly carried out.

The invention discloses a ship exhaust gas waste heat recovery system with a secondary recovery function and relates to the technical field of ship exhaust gas recovery. The system comprises a bottomplate and an exhaust gas tube; supporting plates are fixedly connected on the two sides of the top of the bottom plate; a first fixed plate and a second fixed plate are fixedly connected to the bottoms and the tops, between the opposite sides, of the two supporting plates correspondingly; a temperature difference power generator is arranged on the surface of the bottom plate in a penetrating mode;one side of the temperature difference power generator communicates with one end of the exhaust gas tube; and a first water storage tank and a second water storage tank are fixedly connected with thetwo sides of the top of the first fixed plate from left to right. The invention relates to the technical field of ship exhaust gas recovery. Through the ship exhaust gas waste heat recovery system with the secondary recovery function, exhaust gas can be secondarily recycled, the utilization rate of waste heat in the exhaust gas is increased, the practicability of the system is improved, rust scale and deposits on the inner walls of a first tube, a first heat exchange tube, a second heat exchange tube and a second tube can be removed, and the situation that impurities are accumulated for a long time, and consequently the heat exchange effect is affected is avoided.

The invention relates to an air source heat pump system with a heat recovery unit. The air source heat pump system comprises a compressor, an oil separator, a heat recovery heat exchanger, a four-way valve, an air-side heat exchanger, a tank-type heat exchanger and a gas-liquid separator which are connected in sequence. The oil separator is connected with an oil groove of the compressor through an adjusting device. The heat recovery heat exchanger is connected with a first port of the four-way valve. A second port, a third port and a fourth port of the four-way valve are connected with the tank-type heat exchanger, the gas-liquid separator and the air-side heat exchanger correspondingly. The air-side heat exchanger is connected with the tank-type heat exchanger through a throttling device. The tank-type heat exchanger is connected with the compressor through a return oil solenoid valve. An outlet of the gas-liquid separator is connected with an inlet of the compressor. The gas-liquid separator is located in the tank-type heat exchanger. The efficiency of the heat pump system is improved. The structure is simplified. The material cost is lowered. The use safety performance and reliability of the heat pump are improved.

The invention relates to an air conditioner of a machine cabinet. An inner circulation heat exchanging system is provided with an air inlet inside the cabinet, an air outlet inside the cabinet and an inner circulation heat exchanging cavity formed in enclosing mode. The inner circulation heat exchanging cavity comprises a fan inside the cabinet, an electrical component and an evaporator. An outer circulation heat exchanging system is provided with an air inlet outside the cabinet, an air outlet outside the cabinet and an outer circulation heat exchanging cavity formed in enclosing mode. The outer circulation heat exchanging cavity is provided with a fan outside the cabinet, a compressor and a condenser aligning to the air inlet outside the cabinet or the air outlet outside the cabinet. Sealing strips arranged on the periphery of the air outlet outside the cabinet or the air inlet outside the cabinet and capable of being extruded by the condenser to cause elastic deformation to seal the periphery of the condenser are arranged between the condenser and the air outlet outside the cabinet or the air inlet outside the cabinet. By means of the sealing strips, the direction of hot wind after passing through the condenser is guided so as to avoid affection on heat exchanging effect caused by streaming of hot air and cold air.

Disclosed are a device and a method for recycling flue gas waste heat of a roasting furnace. The device comprises a heat exchanger and a steam pocket. Fin heat exchange tubes are arranged in the heat exchanger, are filled with heating media and are communicated with the steam pocket through heating medium tubes. The steam pocket comprises a body and a center pipe positioned in the body, the body is filled with water, and the center pipe is communicated with the heating medium tubes. Primary heat exchange between flue gas of the roasting furnace and the heating media is performed in the heat exchanger, and then, secondary heat exchange between the heating media and the water in the steam pocket is performed in the center pipe. Heat in heating medium gas can be recycled through heat exchange, and thus, energy waste is not caused; the temperature of the heating media is high, and the heating media are vaporized during heat exchange, so that moisture condensation on the surfaces of the fin heat exchange tubes during heat exchange of the fuel gas in the heat exchanger is avoided, and heat exchange effect is guaranteed.

The invention discloses a chemical condenser which comprises a base, fixing holes, a cooling shell, a mounting base, a liquid inlet pipe, a liquid outlet pipe, a water inlet pipe, a water outlet pipe and a connecting assembly. The fixing holes used for fixed mounting are formed in the two sides of the surface of the base, the cooling shell is mounted on one side of the upper end of the base, and the cooling shell is in a U shape; the water inlet pipe and the water outlet pipe are arranged at the two ends of one side of the cooling shell correspondingly, penetrating holes are formed in the two ends of the cooling shell correspondingly, and a flow guide assembly is arranged in the cooling shell, so that the flowing speed is conveniently controlled and adjusted; by rotating a rotating sleeve, the rotating sleeve drives a connecting ring to rotate, the connecting ring drives a mounting screw sleeve to rotate through a meshing tooted bar and a meshing gear; and the mounting plate moves along the surface of the mounting bolt along with rotation of the mounting screw sleeve, so that the mounting plate moves towards the interior of the mounting base, and quick mounting of the mounting plate and the heat exchange assembly is facilitated.

The invention provides an efficient wind power generation water cooling system capable of preventing nanofluid precipitation. The system comprises a gear box cooler, a generator cooler, a converter cooler and a transformer cooler which are arranged in a wind power generator shell, and further comprises a mixing and stirring expansion tank, a pump and a cabin outer cooler which are sequentially connected through pipelines. The mixing and stirring expansion tank is used for mixing and stirring nano-flow cooling liquid and providing the nano-flow cooling liquid for the gear box cooler, the generator cooler, the converter cooler and the transformer cooler under the action of the pump and the cabin outer cooler. The nano-flow cooling liquid is sucked out from the mixing and stirring expansion tank under the action of the pump and enters the cabin outer cooler to be cooled into low-temperature cooling liquid; then, the cooling liquid enters a main supply path, and the cooling liquid enters atransformer cooler, the converter cooler, the gear box cooler and the generator cooler for heat exchange and temperature rise; and the mixing and stirring expansion tank is used for stirring the nano-flow cooling liquid, so that the heat exchange effect is prevented from being influenced by nano-particle precipitation.

The invention relates to a simple oil separator for an automobile air conditioner system. The simple oil separator comprises an oil separation bent pipe and an oil storage cavity. The oil separation bent pipe penetrates through and is fixed to the upper portion of the oil storage cavity in the mode that the two ends are exposed, the two ends of the oil separation bent pipe are a refrigerant inletend and a refrigerant outlet end, the arc face on the side with the large curvature radius of the oil separation bent pipe or a straight pipe section connected with the tail end of the arc face on theside is provided with an oil separation port, and the oil separation port is located in the oil storage cavity. The lower end of the oil storage cavity is provided with an oil return mechanism. In the oil output direction, the oil return mechanism is formed by sequentially connecting a throttling hole, an oil drainage hole and an oil return port. The oil drainage hole is a variable-section hole with the cross section increased gradually. According to the simple oil separator, in the flowing process of gas state refrigerant and liquid state refrigerating machine oil in the oil separation bentpipe, oil separation is achieved under the effect of weight and inertia. Oil enters the oil storage cavity through an oil separation port and returns back into a compressor of the air conditioner system through the oil return structure. The simple oil separator has the advantages of being small in size, simple in structure and resistant to vibration.

The invention discloses a dark-color polyester fabric post-treatment process, and belongs to the technical field of textile processes. The process comprises the steps of heat exchange and cleaning: specifically, under the pressure of 4-6 bar, wet and hot steam in a dye vat and high-temperature residual liquid contained in the dye vat are used for conducting heat exchange heating on clear water, and the temperature of the clear water to be heated is increased by 4-6 DEG C; and under the pressure of 4-6 bar, the heated clear water is injected into the dye vat to clean dark-color polyester fabric, and the temperature of the clear water is controlled to be 12-16 DEG C lower than the temperature of the residual liquid of the dye vat. The dark-color polyester fabric produced by the method can achieve the color stability and color fastness which can be achieved by a traditional reduction cleaning process; use of caustic soda and sodium hydrosulfite is avoided, electric energy is saved, pollution discharge is reduced, and the process has the advantage of environmental protection.

The invention relates to novel cooling equipment comprising an upper head, a housing, and a bottom head; the upper head is arranged on the upper portion of the housing, and provided with an observe port and a material feeding port; an upper pipe board is arranged between the upper head and the housing; the bottom head is arranged on the lower portion of the housing, and provided with a maintain port and a material outlet; a lower pipe board is arranged between the bottom head and the housing; heat exchange pipes are arranged between the upper and lower pipe boards; a cooling water inlet and a cooling water outlet are arranged in the housing; the heat exchange pipes are phenolic resins profiling graphite pipes; the heat exchange pipe and the upper pipe board are elastically sealed through a sealing ring; the heat exchange pipe and the lower pipe board are elastically sealed through a sealing ring; the novel cooling equipment employs rubber ring elasticity connection, so carbon steel intensity, graphite material corrosion resisting ability, and good heat exchange effect can be perfectly combined.

The invention provides a method for controlling biological slime of a clean circulating water system through a physicochemical-superconduction high gradient magnetic separation (HGMS) coupled process,and belongs to the technical field of water treatment. The method comprises the steps: firstly, an inorganic efficient composite flocculant is added into circulating water, thus zoogloeae in the circulating water are demulsified from hydrosol together with fine micro-nano particles to form alum floc, and a flocculation effect is generated; and then the water after flocculation passes through thesuperconduction HGMS system, the magnetic field intensity and the flow rate are controlled, a strong magnetic flocculation effect is generated to enable flocs to grow quickly, thus the zoogloeae in the circulating water wrap the micro-nano-scale particles to be quickly separated and removed from the water, meanwhile the functions of sterilization and algae killing are achieved, and the purpose ofdeeply purifying the water quality is achieved. According to the method, breeding and adhesion of the biological slime on the surfaces of cooling equipment and a pipeline can be avoided from the source, thus the situation that scale is generated, and consequently the heat exchange effect is influenced can be avoided, and meanwhile generation of the scale and subscale corrosion is effectively avoided, and normal operation of production is guaranteed; and the water quality is stabilized, the concentration multiple is increased, and water conservation and energy conservation are achieved.

The invention discloses an ash deposition resistance and acid dew corrosion resistance heat exchanger accurate in positioning and easy for side leakage. The heat exchanger comprises a support frame, three-wing connectors connected to the support frame, 8-shaped blocks connected between the adjacent three-wing connectors through hanging hooks, and fluoroplastic heat exchange pipes penetrating through the 8-shaped blocks to form a netty heat exchange grid. The heat exchanger adopts the three-wing connectors and the 8-shaped blocks with simple and reasonable structures to fix and position according to characteristics of fluoroplastic pipes; the complex grid structure of the fluoroplastic pipes can be quickly and conveniently installed, is accurately and conveniently positioned, and overcomes fixation of traditional fluoroplastic pipes through bending insertion in positioning grids to prevent more bending positioning installation; when hot smoke continuously passes through, the fluoroplastic pipes cannot generate bending marks after being softened; and cooling water in the fluoroplastic pipes is smoothly circulated, so that the heat exchange efficiency is improved, and the service life of the fluoroplastic pipes is prolonged.

The invention discloses an air conditioner oil return system, a method and an air conditioner. The problem that because the oil return temperature is too high in the oil return process of the air conditioner in the related art, the heat exchange effect of the system is influenced is solved. The air conditioner oil return system comprises a first oil separator, a first oil return pipeline and a controller, wherein an inlet of the first oil separator is connected with an exhaust port end of a compressor in the air conditioner, and the first oil separator is used for receiving oil-gas mixture discharged by the compressor connected with the first oil separator and separating the oil-gas mixture. The oil return pipeline is used for conveying the oil separated by the first oil separator to a compressor in the air conditioner. The controller is used for controlling the air conditioner to run when the air conditioner returns oil, and the air supplementing flow of the air supplementing loop ofthe compressor is adjusted according to the air supplementing superheat degree of the compressor in the air conditioner, so that the oil return temperature of the air conditioner is reduced. Accordingto the system and the method, the problem that because the system oil return temperature is too high, the system heat exchange effect is influenced is solved.

The invention discloses a ship exhaust gas waste heat recovery system with a secondary recovery function and relates to the technical field of ship exhaust gas recovery. The system comprises a bottomplate and an exhaust gas tube; supporting plates are fixedly connected on the two sides of the top of the bottom plate; a first fixed plate and a second fixed plate are fixedly connected to the bottoms and the tops, between the opposite sides, of the two supporting plates correspondingly; a temperature difference power generator is arranged on the surface of the bottom plate in a penetrating mode;one side of the temperature difference power generator communicates with one end of the exhaust gas tube; and a first water storage tank and a second water storage tank are fixedly connected with thetwo sides of the top of the first fixed plate from left to right. The invention relates to the technical field of ship exhaust gas recovery. Through the ship exhaust gas waste heat recovery system with the secondary recovery function, exhaust gas can be secondarily recycled, the utilization rate of waste heat in the exhaust gas is increased, the practicability of the system is improved, rust scale and deposits on the inner walls of a first tube, a first heat exchange tube, a second heat exchange tube and a second tube can be removed, and the situation that impurities are accumulated for a long time, and consequently the heat exchange effect is affected is avoided.