73results about How to "Shorten heat transfer time" patented technology

The invention relates to a composite sleeve double-helix heat exchanger. At present, a plate type heat exchanger has high coefficient of heat transfer but can bear lower working pressure; a pipe shelltype heat exchanger is of a pressure-resisting structure but has very low coefficient of heat transfer; and a pipe type heat exchanger is formed by a single heat exchanging pipe or a heat exchange pipe bundle and has low heat transfer rate due to thick viscous flow layer of liquid inside the pipe and poor circulation state due to very low flow rate of liquid outside the pipe. In a double-helix three-sleeve heat exchanging pipe bundle of the composite sleeve double-helix heat exchanger, a middle pipe and a hollow inner pipe form an inner flow passage; inner helical blades are arranged in an annular gap of the middle pipe and the inner pipe; an outer pipe and the middle pipe form an outer flow passage; outer helical blades with opposite handedness with the inner helical blades are arranged in an annular gap of the middle pipe and the outer pipe; and two-phase liquid fast forms an annular lamella in the pipe to flow forwards in a helical scouring way. The structure not only has strong structure, but also can greatly improve the heat-transfer characteristic of the heat exchanger.

A process for using coke oven gas to extinguish coke and desulfurize coke features that the coke oven gas is circulated in the coke extingushing furnace, the heat-absorbing cracking reaction of methane in gas and the high heat transfer efficiency of gas can effectively extinguish to coke, and the H2 in gas can react on the sulfide and organosulfur in coke to generate H2S, so desulfurizing coke.

The invention relates a composite positive electrode of a rapidly-activated thermal battery and an electrode manufacturing method. The composite positive electrode is mainly manufactured from thermal battery positive electrode powder, heating powder and a wire mesh by physical compression molding, wherein the positive electrode powder is coated with a molten salt electrolyte; the heating powder is 5-60 percent of the positive electrode powder; the wire mesh in an electrode assembly is embedded into a positive electrode layer; and the diameter of the wire mesh is 60-90 percent of a flake diameter. In a process of activating the thermal battery, the heating powder in the composite positive electrode burns, so that a positive electrode coating layer can be activated rapidly; heat transfer intermediate processes can be reduced; and the electrolyte in a diaphragm is directly heated. Moreover, the conductivity of the electrode can be improved through excessive iron in the wire mesh and the heating powder, and rapid voltage buildup is facilitated. The positive electrode has a high molding property and high heat transfer efficiency, and is suitable for a short-time rapidly-activated thermal battery design; and the activation time can be shortened greatly.

The invention relates to a device for heat exchange of an electrolytic bath, which comprises an air inlet tube, an air outlet tube, stainless steel sleeves and a cooling coil. A heat exchanger is perpendicularly mounted below a cover of a magnesium collection compartment of the electrolytic bath and integrated with the cover of the electrolytic bath. The air inlet tube and the air outlet tube are respectively connected with the cover. The cooling coil is in a multi-set structure and subjected to temperature resistance and corrosion resistance treatment. The outer sleeves for the air inlet tube and the air outlet tube between the level of electrolyte and the bottom of the cover are made of anticorrosion or stainless steel materials, and castables are cast between each stainless steel sleeve and the corresponding one of the air inlet tube and the air outlet tube. Safe and reliable temperature regulation and control for the electrolytic bath are realized by the heat exchanger physically, damage of mass balance, chemical balance and thermal balance of the electrolyte in the electrolytic bath can be reduced, operation is facilitated, operation safety of the electrolytic process is ensured, current efficiency of the electrolytic bath is improved, product quality and mass are improved, operation stability of the electrolytic bath is guaranteed effectively, and energy consumption of an electrolytic system is reduced.

The invention discloses an active heat regenerator for a room temperature magnetic refrigerator. The active heat regenerator comprises an insulated housing and a magnetocaloric working medium bed layer arranged inside the insulated housing, wherein the magnetocaloric working medium bed layer is internally provided with mutually parallel micro channels for a heat exchange fluid flowing through linearly and uniformly along the length direction; the heat exchange fluid is a low boiling point fluid, such as R410a, R134a, R407a or R290, that the boiling temperature after pressurization is 20-30 DEG C. The active heat regenerator has the effects and advantages that the heat exchange efficiency of the active heat regenerator is furthest improved, the boiling heat-transfer characteristic is effectively utilized, and the heat convection coefficient between the heat exchange fluid and a magnetocaloric working medium is greatly improved, thus the cold/heat flow time is reduced, and the running efficiency of the room temperature magnetic refrigerator is improved. Moreover, an organic low boiling point working medium is introduced, so that the problem that active rear metals corrode during the machine running process is effectively solved. Therefore the room temperature magnetic refrigerator keeps a smooth and efficient running state during a long-time running process.

The invention provides a radiation module and an air conditioning system with the same, wherein the radiation module includes a radiation plate, a graphene heat conducting film and a heat exchange tube; the radiation plate has a first surface and a second surface oppositely arranged; the graphene heat conducting film is arranged on the second surface; and the heat exchange tube is contacted with the graphene heat conducting film to exchange heat with the radiation plate through the graphene heat conducting film. The radiation module can solve the problems of long heat exchange time between the radiation plate and a copper tube and low radiation efficiency in the prior art.

A polymerization reactor of the present invention includes a container body 1 and a jacket 2 covering the outer surface of the container body 1 and defining a passage for passing a cooling/heating medium between itself and the outer surface of the container body. The container body 1 is made of a clad metal plate including a support metal layer 11a having an inner surface at an inner side of the container body and an outer surface at an outer side of the container body, and an inner corrosion-resistant metal skin layer 11b bonded to the inner surface of the support metal layer and being smaller in thickness than the support metal layer.

The invention relates to a mechanical induction plate. The mechanical induction plate is characterized in that: a first conducting film and a second conducting film are respectively arranged on a first sliding surface of a first plate and a second sliding surface of a second plate; the first conducting film and the second conducting film are respectively patterned to form a plurality of corresponding first strain resistors and second strain resistors; a relief course with mobility is arranged between the first sliding surface and the second sliding surface; when the first sliding surface and the second sliding surface are pressed by the external force, the first sliding surface and the second sliding surface slide relatively, and the first plate and second plate are curved, and the first conducting film is stretched so that the positive stress value becomes smaller, and the second conducting film is compressed so that the positive stress value becomes greater; the first strain resistors and the second strain resistors generate very clear differential signals so that the accuracy and the sensitivity for the press force detection are improved; and as the relief course is provided with mobility so that the relief course can be set very thin and the consistency of the temperature is guaranteed and the differential signals can more accurately reflect the press force of the finger on the mechanical induction plate.

The invention provides an efficient energy-saving electrical oil heater. The efficient energy-saving electrical oil heater comprises a base, a pipeline unit, a plurality of heat sinks and a control unit, wherein the pipeline unit is arranged on the base, the pipeline unit forms a ring shape in a surrounding mode, the heat sinks are installed on the pipeline unit in a rotary mode along the ring shape, the control unit comprises a rotary rod, a control block and a plurality of connecting rods, the rotary rod is arranged on the base in a rotary mode, a rail is arranged on the side wall of the rotary rod, the rail extends upwards in a spiral mode along the side wall of the rotary rod, the control block is arranged on the rotary rod in a sleeving mode, and the control block extends towards the rail to form a clamping block so that the control block can move up and down when the rotary rod rotates; one end of each connecting rod is hinged to the control block, and the other end of each connecting rod is hinged to the corresponding heat sink; when the control block moves to the lowermost end of the rail, the heat sinks rotate outwards to be totally open; when the control block moves to the uppermost end of the rail, the heat sinks rotate inwards to be totally closed.

The invention discloses a novel coke stove based on wet-method quenching. The novel coke stove comprises a quenching section as well as a dry distillation section, wherein a plurality of nozzles are arranged at the bottom of the quenching section; the nozzles are divided into two parts; one part of the nozzles are communicated with a nitrogen inlet tube; the other part of the nozzles are communicated with an ammonia water inlet tube; the dry distillation section is arranged above the quenching section; the quenching section comprises an upper section and a lower section which are connected together; the upper section is directly connected with the dry distillation section, is provided with a water cooling wall and is used for carrying out radiation heat exchange with red hot semi-coke at the dry distillation section; a steam outlet tube of the water cooling wall is fed into a power plant through a waste heat boiler; the lower section is an inert gas quenching section. Quenching of cokeis carried out with nitrogen and ammonia water in a spraying manner, so that the quality of the coke is greatly improved, the red coke can be slowly cooled by using a circulated inert gas in a quenching process, cracks caused by water spraying in wet-method quenching can be avoided, the coke is subjected to mechanical pellet shaping in a dry quenching furnace, the uniformity of coke blocks is improved, and the mechanical stability of the coke is improved.

The invention relates to a multilayer cylindrical spiral pipe solar storage tank. A tank body of the multilayer cylindrical spiral pipe solar storage tank is cylindrical, three cylindrical spiral heat transfer pipeline layers are arranged on the tank body from inside to outside, namely, an outer cylindrical spiral heat transfer pipeline layer, a middle cylindrical spiral heat transfer pipeline layer and an inner cylindrical spiral heat transfer pipeline layer, and each cylindrical spiral heat transfer pipeline layer penetrates in the tank body from top to bottom. A fluid inlet pipe is divided into three inlet branch pipes, each branch pipe is provided with an adjusting valve, and the three inlet branch pipes are connected with inlets of the cylindrical spiral heat transfer pipeline layers respectively and are in one-to-one correspondence with the inlets. Outlets of the three cylindrical spiral heat transfer pipeline layers are gathered to an outlet manifold at the bottom of the tank body, and the outlet manifold extends out of the tank body. A heat preservation layer is arranged on the outer wall of the tank body. By means of the multilayer spiral pipe distribution structure, the heat transfer efficiency of a system is improved, the heat transfer time of the system is shortened, and energy saving of the system is achieved.

The invention relates to a manufacturing method for a PVC straight-through pipe and a PVC straight-opening reducer tee joint. The manufacturing method comprises the following steps that pipe-shaped objects are cut into required lengths and angles through a multi-angle pipe sawing machine; the cut pipe-shaped objects are placed on a welding machine clamp and well fixed; the to-be-welded end faces of the two pipe-shaped objects are treated to be level and smooth; the end faces are folded, the centering situation is checked, the staggered edges of the two to-be-welded end faces are no more than 10% of the wall thickness, and otherwise, adjusting is conducted through the clamping force of the clamp and the end faces are treated to be level and smooth again; a welding machine heating plate is placed between the two pipe ends, the pressure P1 is gradually exerted within the time T1, so that the pipe ends are pressed on the heating plate to be heated, after uniform welding beads are formed, the pressure is gradually decreased to be P2 and maintained to be P2, and heat is absorbed; the pipe ends are released, the heating plate is taken out, and then the pipe ends are folded again; the pressure is gradually increased from 0 to P1, so that the pipe welding parts inwards and outwards form uniform turned edges; and the pressure P1 is maintained, so that the welding parts are naturally cooled.

The invention relates to the field of electrical technologies, and in particular relates to an assembled heat sink. According to the assembled heat sink provided by the invention, a graphene heat dissipation film layer can accelerate the heat dissipation effect and the heat conduction performance of the heat sink; the heat transfer time between the heat sink and an electrical component is shortened; the heat dissipation effect is improved; a corrosion-resistant protective film layer is arranged to improve the corrosion resistance of the surface of the heat sink body; the graphene film layer isprotected; the graphene film layer is prevented from being damaged by physical or chemical factors, and the service life is not affected; heat dissipation through-holes are arranged, which greatly improves the heat dissipation function of the heat sink; the heat sink is detachably assembled on the heat sink body, which is easy for maintenance and replacement; and the assembled heat sink has the advantages of simple and reasonable structure, simple preparation process and low production cost.

The invention relates to a heat preservation container capable of quickly transferring heat and a preparing method of the heat preservation container. The heat preservation container capable of quickly transferring heat comprises a hot container, a cold container and a shell wrapping the outer surfaces of the two containers. A vacuum cavity is defined by the hot container, the cold container and the shell. The lower half part of the vacuum cavity is filled with a heat transfer medium, and the height of the heat transfer medium in the vacuum cavity is lower than the bottom of the hot container. The preparing method comprises the steps that the containers are welded to the shell, a process opening is reserved, and the sealed cavity is formed by the shell and the outer surfaces of the containers; the sealed cavity is vacuumized through the process opening, and the heat transfer medium is injected into the cavity through the process opening after vacuumizing is finished, wherein the height of the heat transfer medium in the vacuum cavity is lower than the bottom of the hot container; the process opening is sealed. The heat preservation container can preserve heat and can also quickly transfer heat through the phase change of the heat transfer medium, the heat transfer time is greatly shortened, and cooling is fast; the preparing method is simple, and the processing cost is low.