High efficiency heat transfer heat exchanger
High efficiency heat transfer heat exchanger
High efficiency heat transfer heat exchanger Technical parameters Introduction
Wound tube type high efficiency heat exchanger
The tube-wound heat exchanger is a new type of high-efficiency heat exchanger with compact structure and high heat transfer efficiency. The heat exchange tubes are alternately wound between the core tube and the outer tube in a spiral shape. The spiral heat exchange tubes of two adjacent layers rotate in opposite directions, and a fixed distance element of a certain shape is used to keep a certain distance. The reverse winding of the heat exchange tube between the layers greatly improves the flow state of the fluid and forms a strong turbulence effect; the strengthening effect of the spiral flow state of the medium in the tube increases the heat transfer coefficient of the tube side; the fixed layer The distance element also continuously disturbs the flow of the shell side fluid. Under the combined effect of the three aspects, the heat transfer efficiency of the heat exchanger has been greatly improved.
High flux tube high efficiency heat exchanger
The high-flux tube high-efficiency heat exchanger is to spray or sinter metal powder uniformly on the surface of the light tube. These powders form a layer of porous metal powder with numerous micropores and interconnected tunnels on the surface of the heat exchange tube. The porous coating on the surface not only increases the heat transfer area, but also greatly accelerates the bubble nucleation speed by the formation of numerous vaporized cores. The interconnected porous coatings also accelerate the agitation of the local liquid during the process of bubble growth and escape, and further strengthen the heat transfer coefficient outside the tube. Under the joint enhancement of many aspects, the heat transfer efficiency of the heat exchanger has been greatly improved.
High efficiency heat exchanger with internal wave and external threaded tube
The heat exchange tube of the internal wave external threaded tube high-efficiency heat exchanger is a special-shaped tube with a spiral corrugated tube inner wall and a threaded outer wall. The spiral inner corrugated structure causes the fluid boundary layer near the wall to be continuously destroyed, which effectively reduces the thickness of the fluid boundary layer. When the outside of the tube is in a condensing condition, the condensate can be easily discharged from the threaded groove, avoiding the formation of a condensate film, and effectively reducing the heat transfer resistance outside the tube. Thereby greatly improving the overall heat transfer efficiency of the heat exchanger.
Bellows high efficiency heat exchanger
The heat exchange tube of the bellows high-efficiency heat exchanger is a special-shaped tube with corrugated inside and outside the tube. The convex corrugated surfaces inside and outside the corrugated tube make the fluid in the boundary layer vortex. The vortex continuously mixes the fluid in the boundary layer with the fluid outside the boundary layer, and the heat transfer coefficient inside and outside the bellows tube is greatly improved, thereby greatly improving the heat transfer efficiency of the heat exchanger.
T-slot tube high-efficiency heat exchanger
The heat exchange tube of the T-slot tube high-efficiency heat exchanger is a light tube as a blank tube, and the outer surface of the heat exchange tube is processed into a spiral T-shaped fin, and there is a special tube with an internal expansion cavity between the fins. The T-shaped groove structure not only provides a stable vaporization core for the fluid in the inner expansion cavity, but also makes the boiling fluid outside the tube form a thin liquid film on the tunnel wall, effectively strengthening the boiling heat transfer coefficient outside the tube, thus greatly Improve the heat transfer efficiency of the heat exchanger.
Inner groove tube high efficiency heat exchanger
The inner groove tube of the inner groove tube high-efficiency heat exchanger is a special tube with a smooth tube as a blank tube and a linear or spiral groove on the inner surface of the heat exchange tube. The groove structure provides a stable vaporization core for liquid vaporization. The thin liquid film formed by the fluid in the groove can be quickly evaporated, which effectively strengthens the heat transfer coefficient in the tube, thereby greatly improving the heat transfer efficiency of the heat exchanger.
Twisted tube high-efficiency heat exchanger
The twisted tube of the high-efficiency twisted tube heat exchanger is made of a bare tube as a blank tube and processed by a special machine tool. When the fluid flows longitudinally in the twisted tube, a secondary swirl flow is generated perpendicular to the main flow direction, which greatly improves the synergy of the velocity field and the temperature field; after the tube bundle is assembled, the shell side fluid flows through the spiral channel formed between the heat exchange tubes. Under the action of centrifugal force, the speed and direction are periodically changed, and the wake that leaves the tube wall is formed after the contact point, which increases the turbulence of the fluid. Under the combined effect of the enhanced heat transfer of the fluid inside and outside the twisted tube, the heat transfer efficiency of the heat exchanger is greatly improved.
Low-finned tube high-efficiency heat exchanger
The low-fin tube of the low-fin tube high-efficiency heat exchanger adopts a special tube whose outer surface is rolled into threaded fins. The low fin tube not only increases the heat exchange area, but also when the shell side fluid flows through the surface of the fin, the fin has a splitting effect on the fluid boundary layer, the thickness of the boundary layer is thinned, and the heat transfer resistance is reduced; in addition, the fin The periodic disturbance generated by the fluid at the tip also accelerates the heat transfer between the fluid and the wall. The heat transfer coefficient outside the tube is strengthened under the dual effects of fluid boundary layer thinning and periodic disturbance, which greatly improves the heat transfer efficiency of the heat exchanger.
High fin tube high efficiency heat exchanger
The high fin tube for high fin tube high-efficiency heat exchanger is a special tube that uses a smooth tube as a tube blank, and is rolled and pressed to form a spiral fin on the outer surface of the tube. It is mainly divided into a single metal high fin tube and a bimetal high Finned tube. The single-metal high-fin tube is processed into a fin-like shape from the outer surface of the metal tube blank, and the fin and the metal tube are integrated; the double-metal high-fin tube is tightly composited by two metal tubes, and the outer metal tube The outer surface of the blank is processed into a fin shape. The high-fin tube not only expands the heat transfer surface area, but also promotes fluid disturbance, reduces heat transfer resistance, effectively increases the heat transfer coefficient outside the tube, and greatly improves the efficiency of the heat exchanger.
High efficiency heat exchanger with baffle rod
The baffle ring of the baffle rod high-efficiency heat exchanger is welded by a group of parallel and equidistant baffle rods and a circular support ring. Every four adjacent baffle rings are a set, which are clamped from four directions. Tight heat exchange tubes, instead of traditional heat exchanger bow baffles to support heat exchange tube bundles. The fluid in the shell side of the heat exchanger flows downstream along the axis of the heat exchange tube, and the special tube is further used to enhance heat transfer, which can greatly improve the heat transfer efficiency of the heat exchanger.
High-efficiency heat exchanger with spiral baffle
The baffle of the spiral baffle high-efficiency heat exchanger is assembled by spirally using several fan-shaped baffles. The medium in the shell side flows helically forward in the spiral channel formed by the baffle, the fluid is not easy to form a dead zone in the heat exchanger, and the fluid flow is more uniform. At the same time, special-shaped tubes are used to enhance heat transfer, which can greatly improve the heat transfer efficiency of the heat exchanger.
Spiral plate high efficiency heat exchanger
The spiral plate high-efficiency heat exchanger is a compact plate-type high-efficiency heat exchanger. It is made by rolling two or more parallel metal sheets on a special rolling bed. The formed spiral body has two or more parallel spiral channels, and each channel is generally equipped with a fixed distance column (bubble), which can not only maintain the channel spacing and improve the pressure bearing capacity of the heat exchanger, but also Under the combined action of centrifugal force, the fluid can be turbulent at a lower Reynolds number, resulting in a higher heat transfer coefficient, thereby greatly improving the heat transfer efficiency of the heat exchanger.
Card issued high-efficiency heat exchanger
The hairpin type high efficiency heat exchanger is a new type of high efficiency heat exchanger with compact structure and high heat transfer performance. It is suitable for occasions where the flow of the medium in the shell side is small, the medium viscosity is large, it is easy to coke and scale, and it needs to be cleaned regularly. The diameter of the heat exchanger shell is usually relatively small.
