756results about How to "Sufficient heat exchange" patented technology

The invention provides a melting furnace slag quenching dry type granulation and sensible heat recovery generating system and a method using the same and belongs to the technical field of steel metallurgy furnace slag treatment and complementary energy recovery. The melting furnace slag quenching dry type granulation and sensible heat recovery generating system provided by the invention comprisesa slag-receiving device, a high-pressure water-air pulverization furnace slag quenching and granulating device, a furnace slag slow-cooling device, a sensible heat recovery generating device and a waste gas purification treatment device. According to the invention, the melting furnace slag is quenched and granulated by utilizing the high-pressure water-air pulverization device, so that the melting furnace slag is rapidly cooled to be in a glassy state; and then through a water-cooled type vibration grid plate, the melting furnace slag in the glassy state is further subjected to heat exchange with cold air so as to facilitate the subsequent recovery of the sensible heat. By the system provided by the invention, the melting furnace slag is quenched and granulated, and the high-temperature sensible heat resource of the furnace slag is sufficiently recovered and is used for generation on the basis that the water activity quality of the furnace slag is not influenced.

A system used for sinter ore cooling and sensible heat efficient recycling comprises a stepping sintering machine used for sintering mixed iron ore materials, a vertical cooling kiln used for cooling sinter ore which is sintered and crushed, a feeding mechanism arranged between a discharging opening of the stepping sintering machine and a feed inlet of a material receiving funnel of the vertical cooling kiln, a gravity dust remover, a high-temperature smoke unit, a discharging machine, a belt conveyer and a vertical double-pressure waste heat boiler used for heat exchange, wherein the gravity dust remover and the high-temperature smoke unit are connected with a gas outlet in the upper portion of the vertical cooling kiln, and the discharging machine and the belt conveyer are arranged on a discharging opening of the vertical cooling kiln. A gas outlet of the vertical double-pressure waste heat boiler is connected with a gas inlet of a low-temperature gas unit, a gas outlet of the low-temperature gas unit is connected with a gas inlet in the lower portion of the vertical cooling kiln, and a heat exchange pipe of the vertical double-pressure waste heat boiler is connected with a power generation system. By means of the system, the sinter ore and cooling air can flow reversely in a closed space, cooling time of the sinter ore is prolonged, heat exchange is sufficient, heat efficiency of the system is greatly improved, and efficient recycling of sensible heat of the sinter ore is achieved.

The invention relates to the field of heat exchangers, in particular to a fin-typed heat exchanger with high efficiency and low resistance, comprising a fin row which consists of fins and a heat exchange pipe which vertically passes through the fin row. The fin-typed heat exchanger is characterized in that the section of the heat exchange pipe is an ellipse shape; the fin is provided with a longitudinal vortex generator. The fin-typed heat exchanger can greatly improve the whole heat exchange performance of the heat exchanger but increases the flow resistance to small extent at the same time, and is mainly applied to gas-liquid heat exchange or gas-phase variable heat exchange.

The invention relates to a condensing gas boiler, which belongs to the technical field of heat exchange facilities. The condensing gas boiler mainly comprises a burner and a heat exchange device with smoke and water passages, wherein the heat exchange device comprises a horizontal heat exchanger and a V-shaped heat exchanger which are mutually connected in series; a first group of water pipes forming a roundabout flow passage are distributed at the circumference of the horizontal heat exchanger, and the middle part of the horizontal heat exchanger is provided with a cylindrical combustion chamber; the burner is arranged at one end of the cylindrical combustion chamber, and the smoke passes through the horizontal heat exchanger and enters the V-shaped smoke passage of the V-shaped heat exchanger through a downward through hole; a second group of water pipes forming a roundabout flow passage are distributed in the V-shaped smoke passage at intervals; and reverse heat exchange is formed between the water first flowing through the second group of water pipes and then the first group of water pipes and the smoke coming from the combustion chamber and flowing through the V-shaped smoke passage. The heat exchange is sufficient, the flow rate of the cooled smoke can be kept to ensure the heat exchange efficiency, and the condensing gas boiler has a reasonable structure and occupies small area.

The invention discloses an ice preventing and removing system for an aircraft wing. The system comprises a waste gas treatment device, an air pump, a shell, an evaporator, a condenser, an air line and a liquid line, wherein engine waste gas treated by the waste gas treatment device is introduced into the shell to heat the evaporator, working media are vaporized after being heated in the evaporator and then led out through the air line, and then the working media are cooled into liquid in the condenser located on the skin and give out heat, and finally flow back to the evaporator through the liquid line to finish the whole circulation. According to the system, the vapor-liquid two-phase flow phase change heat transfer design concept is adopted, vapor-liquid phase conversion of the working media is utilized to transmit heat, and then the purpose of preventing and removing ice on the aircraft wing is achieved; engine waste gas of an airplane is utilized as the heat source to increase the comprehensive utilization rate of airplane energy.

The invention discloses a metal and conductive plastic composite micro heat exchanger, belonging to the technical field of heat exchangers. In the heat micro-exchanger, a shell with heat insulating function is sleeved outside the heat exchanger to protect internal panels; a seal head for distributing or collecting fluid is welded on the shell, and mouths of cold and heat fluid inlet and outlet pipes are welded on the seal head; and particular structures can be arranged according to requirements. The heat micro-exchanger is characterized in that the internal panels comprise a metal substrate and a plastic micro-structure, wherein metal is used as a conductive substrate, and the conductive plastic of a micro-structure is compounded on the metal substrate. By the metal and conductive plastic composite heat micro-exchanger, the processing cost is greatly reduced, and the micro-channel made of plastic is difficult to scale compared with that made of metal materials.

The invention relates to a waste gas high-efficiency cooling system with high EGR efficiency, which comprises a cooler and an EGR valve and has the innovative points: the system includes a precooler, an aftercooler and an EGR valve; wherein, the precooler is used for cooling high temperature large flow rate waste gas introduced from an exhaust system; the aftercooler is used for cooling the circulated waste gas which is introduced from the precooler and cooled by the precooler; and the EGR valve is connected and installed between the precooler and the aftercooler in series, and used for adjusting the flow rate of the waste gas. The invention is scientific and reasonable in design, and is especially used for high EGR efficiency (70-80%) waste gas cooling in an oxy-fuel combustion engine based on waste gas recycling. The waste gas high-efficiency cooling system has the advantages of high cooling efficiency, small occupying space, convenient installation, high durability, etc.

The invention provides a drum-shaped evaporator and a cabinet air conditioner with the drum-shaped evaporator. The drum-shaped evaporator comprises a drum-shaped evaporator body, one of the inner circumference side and the outer circumference side of the evaporator body is the air inlet side, and the other is the air outlet side. The cabinet air conditioner comprises a casing, the upper portion of the casing is provide with an air outlet, the lower portion of the casing is provided with an air inlet, and the drum-shaped evaporator located between the air inlet and the air outlet is further arranged in the casing in the vertical direction. By arranging the evaporator into the drum shape, enabling one of the inner circumference side and the outer circumference side to be the air inlet side and enabling the other to be the air outlet side, even if air flow flows into the drum-shaped evaporator from the periphery of the drum-shaped evaporator or flows out of the drum-shaped evaporator to the periphery of the drum-shaped evaporator, a heat exchange area between the air flow and the evaporator is the whole circumference, the heat exchange area of the evaporator is effectively enlarged, the speed of the air flow penetrating through the evaporator is reduced, the air flow and the evaporator perform heat exchange fully, and the heat exchange effect is improved.

A device with a griddle and a process for generating power by efficiently recycling sinter waste heat relate to the technical field of waste heat power generation. The device comprises a sinter cooling system, a waste heat power generation system and a smoke system. The sinter cooling system and the waste heat circulation power generation system are connected through the smoke system to form a loop. The process includes 1) sinter cooling, 2) the smoke system and 3) waste heat power generation. The device and the technological process for waste heat power generation have the advantages of completely utilizing waste heat discharged in the sinter cooling process, obviously increasing power generation quantity, obviously reducing system self power utilization rate and being remarkable in energy-saving effect.

The invention discloses an inflation-type compound-channel evaporator for a solar direct-expansion heat pump water heater. The inflation-type compound-channel evaporator comprises an upper pressing plate and a lower pressing plate which are in close fit with each other. A compound channel network is formed between the upper pressing plate and the lower pressing plate through inflation. Flowing refrigerant which is used for absorbing heat for evaporation is arranged in the compound channel network. The inflation-type compound-channel evaporator for the solar direct-expansion heat pump water heater has the advantages of simple structure, attractive appearance, high practicability, low cost and the like, and can enable the solar direct-expansion heat pump water heater to adapt to different climate and weather conditions.

The invention provides a heat exchanger which comprises two collecting boxes and heat exchange tubes, wherein the heat exchange tubes are arranged between the two collecting boxes; the heat exchange tubes are flat heat exchange tubes; fins are arranged in the flat tubes; the fins comprise inclined parts; a fluid channel is partitioned by the inclined parts into a plurality of small channels; the larger the distance between the flat tubes and an inlet tube is, the larger the lengths h of the bottom sides of the isosceles triangular communication holes in the flat heat exchange tubes are. According to the heat exchanger, as the lengths h of the bottom sides of the isosceles triangular communication holes are changed along with the distance between the flat heat exchange tubes and the inlet tube, fluid can be enabled to flow to the heat exchange tubes with small flow resistance and far away from the inlet tube, the fluid can be uniformly distributed inside the heat exchange tubes, the heat exchange efficiency can be improved, and the service life can be prolonged.

The invention relates to a fresh air ventilator and belongs to the field of vented exhaust equipment. The fresh air ventilator comprises an enclosure and a partition plate support in the enclosure; space in the enclosure is divided into a fresh air inlet passage, a fresh air outlet passage, an exhaust air inlet passage and an exhaust air outlet passage through the partition plate support; a filter, a high-voltage static box and an ozone filter are arranged in sequence along an air inlet direction in the fresh air inlet passage; a fresh air fan is arranged in the fresh air outlet passage; an exhaust air fan is arranged in the exhaust air outlet passage; a plate heat exchanger is arranged at the hubs of the fresh air inlet passage, the fresh air outlet passage, the exhaust air inlet passage and the exhaust air outlet passage, and is fixedly arranged on the partition plate support through mounting buckles. The fresh air ventilator disclosed by the invention has the advantages that substances, such as impurities, dust and ozone, in air can be effectively filtered out to ensure the freshness of the air; the energy is saved, and the environment is protected; the heat exchanger is convenient to install and maintain.

The invention discloses a technology for baking and grinding high-moisture chalk through a vertical mill and belongs to the field of cement raw materials prepared by adopting high-moisture chalk raw materials. Clammy chalk with the moisture more than 25% is fed onto an inner refiner plate of the vertical mill from a feeding mouth of the vertical mill; hot wind passes through a wind chamber, a wind ring and a chamber above the refiner plate from a hot wind inlet and discharges out of the vertical mill from a hot wind outlet; zone control is performed on the moisture of materials inside the mill; the moisture of the materials is dried step by step; a powder selecting machine, the feeding mouth and the hot wind outlet are arranged at the upper part of the vertical mill; the refiner plate and mill grinding rollers are arranged inside the vertical mill; a cloth scraping plate is arranged above the refiner plate; a retaining ring is arranged at the edge of the refiner plate; the height of the retaining ring exceeds 150 mm; the wind chamber is arranged below the refiner plate; the wind chamber is communicated with the chamber above the refiner plate through the wind ring; the hot wind inlet of the mill, a material scraping device and a feeding back port are arranged in the wind chamber, the feeding back port is connected with the feeding mouth through an outer circulating system of the mill. The invention provides a simpler and energy-saving preparation technology and device for preparing the cement raw materials by adopting the high-moisture chalk raw materials.

The invention relates to the field of thermal energy and power engineering, in particular to a heat-pipe heat exchanger and a heat exchange method. The heat-pipe heat exchanger comprises a heat pipe housing, at least one radiator, at least one heat collector, a heat insulating layer and an exhaust liquid-filling port, wherein the heat pipe housing comprises a single inner space, a heat transfer medium is filled into the lower portion of the inner space, each radiator is filled with a radiating medium, the radiators are positioned on the lower portion of the inner space and immersed in the heat transfer medium, each heat collector is filled with a heat collection medium, the heat collectors are positioned on the upper portion of the inner space and above the liquid level of the heat transfer medium, the heat insulating layer warps the outer wall of the heat pipe housing, the exhaust liquid-filling port is reserved at the top of the heat pipe housing or on the upper portion of the lateral wall of the heat pipe housing, the heat transfer medium is filled into the heat pipe housing through the exhaust liquid-filling port, and gas in the heat pipe housing is exhausted through the exhaust liquid-filling port. The heat-pipe heat exchanger is simple in structure, convenient in maintenance and better in heat exchange effect.

The invention provides a control method for an air conditioner indoor unit and the air conditioner indoor unit. The air conditioner indoor unit comprises a first air supplying fan, a second air supplying fan, a first heat exchanger, a second heat exchanger and a fresh air device, wherein the first heat exchanger is arranged on an air inlet flow path of the first air supplying fan, the second heatexchanger is arranged on an air inlet flow path of the second air supplying fan, and the fresh air device conducts flow guiding on outdoor air to the upstream position of the second heat exchanger. The control method comprises the steps that the outdoor ambient temperature and the indoor ambient temperature are obtained; whether the indoor ambient temperature is closer to the temperature expectedby a user than the outdoor ambient temperature or not is judged; if yes, the fresh air device is started, the temperature of the second heat exchanger is lower than that of the first heat exchanger when the first heat exchanger and the second heat exchanger are in a refrigeration state; and when the first heat exchanger and the second heat exchanger are in a heating state, the temperature of the second heat exchanger is higher than that of the first heat exchanger, the outdoor air is fully subjected to heat exchange, and the temperature difference between an air flow blown by a first air outlet and an air flow blown by a second air outlet is decreased.

The invention relates to double fixed junctions slit cooling finger coaxial vessel refrigerating machine. It belongs to refrigeration technical field. Line form compressor is connected to the hot end of the hold over. The cooling end of the vessel is formed a slit type cooling finger. Its bottom and out wall are set groove. The edge of the cooling end cover and the out wall of the hold over are welded. The invention simplifies cooling end structure, enhance heat transfer capability. Thus the performance of the coaxial vessel refrigerating machine is increased further.

The invention is suitable for the field of molten slag dry process treatment, and provides an afterheat recycling system utilizing a slag-granule-jetting molten-slag-crushing process. The system comprises a dry cooling tower, a granulated slag bin and a blowing tank, wherein an opening is formed in the upper end of the dry cooling tower; an air inlet is formed in the lower end of the dry cooling tower; a hot air outlet is formed in the top of the dry cooling tower; a discharging port is formed in the bottom of the dry cooling tower; an collection bin is also arranged inside the dry cooling tower; the bottom of the collection bin is communicated with the discharging port; a slag trough and a spray gun are arranged at the opening; the spray gun is positioned below the outlet of the slag trough; the outlet of the granulated slag bin is connected with the blowing tank; compressed air is used as a fluidization and transmission medium, and the outlet of the blowing tank is communicated with the spray gun. According to the afterheat recycling system utilizing the slag-granule-jetting molten-slag-crushing process, by adopting a pneumatic transmission way, slag granules are jetted so as to crush molten slag, and heat exchange on the slag granules and the molten slag can be performed, so that the flow of the cooling air is reduced; moreover, the molten slag is easily crushed by the slag granules, the obtained hot slag layer has certain voidage, and therefore, full heat exchange is facilitated. According to the system, higher temperature of the hot air can be acquired, the afterheat recycling quality is improved, and the generating efficiency is increased.

The invention discloses a ceramic-matrix high-temperature fused-salt phase-change heat-storage type off-peak electricity utilizing and steam generating device. The ceramic-matrix high-temperature fused-salt phase-change heat-storage type off-peak electricity utilizing and steam generating device comprises a heat-storage pile, a heat-storage pile heat insulation structure, a heat transfer medium system and a heat exchange system. The heat-storage pile comprises a shell and a plurality of heat-storage units, fused salt is packaged inside the heat-storage units, and electric heating devices are arranged on the outer surfaces of the heat-storage units. The heat-storage pile heat insulation structure is arranged on the outer surface of the heat-storage pile and comprises heat conducting bricks, a phase-change heat insulation layer and a water-cooled wall from inside to outside, and the water-cooled wall comprises an upper water tank, a lower water tank and connection water pipes. A water pump of the heat transfer medium system is connected with the lower water tank through a pipeline, and atomizing spray heads are arranged at the bottom of the heat-storage pile and used for spraying atomized soft water into the heat-storage pile. A heat exchanger of the heat exchange system is connected with the heat-storage pile through a steam pipeline and is connected with the upper water tank through a water pipeline, and a three-way valve is arranged on the steam pipeline. The ceramic-matrix high-temperature fused-salt phase-change heat-storage type off-peak electricity utilizing and steam generating device has the advantages that electric energy can be converted into heat energy to be stored during off-peak electricity at night, and heat is obtained after the soft water is atomized during on-peak electricity in the daytime, so that hot water and steam are provided for users.