n   Structural principle and characteristic of spiral plate heat exchanger:

Spiral plate heat exchanger is a highly efficient heat exchanger equipment, used steam-steam, vapor-liquid, liquid-liquid, liquid heat transfer. It is suitable for chemical, oil, solvents, pharmaceuticals, food, light industry, textile, metallurgy, steel, coking industry. According to its structure can be divided into separable type (type I) spiral plate and detachable (type II, and type III) spiral plate heat exchangers.

n   Structural principle and characteristic of tubular heat exchangers:

Column tube type heat exchanger (and ranked tube type condensation device), by material is divided into carbon steel column tube type heat exchanger, stainless steel column tube type heat exchanger and carbon steel and stainless steel mixed column tube type heat exchanger three species, by form is divided into fixed tube plate, and floating head, and u type tube type heat exchanger, by structure is divided into Dan Guancheng, and double tube drive and more tube drive, heat area 1~500m2, can according to user needs custom.

n   Heat exchange equipment: chemical production in heat exchange equipment is the transfer of heat exchange and essential equipment. Often in the heat of some highly corrosive, oxidizing materials, therefore, requirements to create a material has strong corrosion resistance performance of heat transfer equipment. It can use a non-metallic materials such as graphite, ceramics, glass and stainless steel, titanium, tantalum, zirconium, and other metal material. But made of graphite, ceramics, glass and other materials disadvantages of fragile, bulky, heat conduction, made of titanium, tantalum, zirconium, and other rare metals heat prices too expensive, stainless steel is unbearable many corrosive media and generated intergranular corrosion.

n   Structural principle and characteristic of shell-and-tube heat exchangers:

Shell-and-tube heat exchangers are heat exchange operations of General technical equipment. Widely used in chemical industry, petroleum, petrochemicals, electric power, light industry, metallurgy, shipbuilding, aviation, Atomic Energy, heating, and industrial sectors. Especially in oil refining and chemical processing plants, occupies a very important position. Type of heat exchanger.

n   Structural principle and characteristic of displacement heat exchanger:

Energy-saving automatic temperature control volume heat exchanger, it makes full use of steam power, high efficiency, energy saving, is a new type of water heater. Common water heater water water heat exchanger needs to be configured to reduce the temperature of steam condensation water in order to reuse. Energy-efficient heat exchanger, condensation water outlet temperature 45 ℃, reuse or directly back to the boiler room. Such investment is reduced, saving heat exchanger room area, thereby reducing infrastructure costs, so energy-saving-type volumetric heat exchangers the majority of design, users welcome. Than stainless steel lined copper heat exchangers heat exchangers economic and technically assured. It leverages the strength of steel and the corrosion resistance of copper, that is, ensure that the heat exchanger can work under pressure, and heat exchanger, water quality is good. Thickness of steel lined copper is generally 1.0mm. Steel lined copper heat exchangers must be prevented from forming a partial vacuum in the tank, so product factory is equipped with vacuum valves. This valve unless regular maintenance should not be cancelled. Cause of the partial vacuum may be discharged improperly, from the low-water heat exchanger, or poor drainage system. Water hammer or pressure caused by sudden pressure drop is also a negative reason.

n   Structural principle and characteristic of the floating head heat exchanger:

Floating head heat exchanger tube plates and shell fixed at one end and the other end of the tube plate can float freely inside the shell. Thermal expansion shell and Tube bundle is free, when the difference between two media, does not produce thermal stress between the tube and shell. Floating head design into a removable structure, which bundles can be easily inserted or withdrawn, which provides convenience for maintenance and cleaning. Is especially suitable for this form of heat exchanger shell and tubes thermal stress is large, but requires a shell and tube side cleaning should be carried out in the operating mode.

n   Structural principle and characteristic of tubular heat exchangers:

DLG-tube heat exchanger based on the principle of heat conduction and thermal radiation, flue gas through a tube and countercurrent shell-air energy exchanges, so as to achieve the goal of clean hot air output. The heat exchanger is compact, runs *, it tube using high temperature resistance of thin-wall corrugated pipe, increase the heat transfer area and heat transfer efficiency. Widely used in chemical, pharmaceutical and light industries such as waste heat and air heating.

n   Structural principle and characteristic of heat pipe heat exchangers:

Heat pipe is a heat transfer components, hundreds of times to thousands of times times higher thermal conductivity than metals. Heat pipe with good temperature characteristics, heat flux characteristics such as adjustable, reversible direction of heat transfer. It consists of heat-pipe heat exchanger used not only with heat pipe heat quantity, temperature, light weight small cubage, rapid thermal response and other characteristics, but also has easy installation, easy maintenance, long life and resistance losses small, inlet and exhaust airflow road easy to separate, non-leakage and so on. Heat pipe is processed by the inner wall has aluminum sealed at both ends of the channel (rolling) fin-and-tube has been cleaned and pumped into a high vacuum into the best liquid medium, and injected with liquid refrigerant composition and proportion, into KLS heat pipe heat exchanger in low temperature heat pipe heat exchanger, GRSC-A, GRSC-B high temperature heat pipe heat exchanger. One end of the tube is heated tube refrigerant evaporation from heat-source absorption heat of vaporization, vaporized steam to flow and cold condensation at the other end to the heat sink release latent heat. Backflow of condensate by capillary forces and gravity effects, continue heating vaporization, looping around a large transfer of heat from the heated area to thermal zone. Pipe is by refrigerant heat transfer of phase change process.

Heat element by a certain row and column spacing, layout, packed inside the shell of the framework, with plates of heat pipe heating and cooling segments separated constitute a heat pipe heat exchanger.

Heat from United States invention, first used to space technology and nuclear reactors to address the dayside and shaded surface uneven heating. In the 1990 of the 20th century was used for civilian air conditioning, due to its excellent thermal conductivity, are widely valued, now being widely used in computers, radar and other high-tech fields.

n   Aufbau principle and characteristics of steam-water heat exchanger:

On the basis of plate heat exchangers, heat exchanger consisting of installed cooling and pressure-relief devices, use of steam or heat water level regulator for high heat to make it drop below 150 deg. Enter the plate heat exchanger for heat transfer, applicable to high temperature steam and hot water (150 ℃). This device also has a cooling plate heat exchanger and its advantages. The fuller of the heat exchanger for heat exchange.

n   Structural principle and characteristic of air heat exchangers:

In order to reduce the energy consumption of heating furnaces, air heat exchanger in the flue, to recover waste heat from flue gas to save fuel, reduce production costs, improve combustion temperatures, increase the production of stoves. Air heat exchangers are ideal for waste heat utilization equipment, heating furnace of steel rolling, heat treatment furnace, heating furnace for forging a variety of widely used industrial furnaces. Many types of air heat exchanger for the furnace, at present, is used in most metal heat exchanger, air heat exchanger is the use of exhaust heat to preheat the air emissions from furnaces wife returned after a certain temperature furnace combustion or used for other devices. Metal heat exchanger: small size, high heat exchange efficiency, hermeticness is good, simple structure and so on.

n   Aufbau principle, characteristics of corrugated tube heat exchanger:

Features a new type of energy-saving high-efficiency heat exchanger enhanced heat transfer, on the basis of the traditional tubular heat exchanger, use of enhanced heat transfer technology is a breakthrough to the traditional heat exchanger. Nominal diameter DN325~2000mm; P0.6~.4Mpa nominal pressure; heat exchange tube specifications ф 19, ф 25, ф 32, ф 42.0.5~1.0 wall thickness working medium water-water and steam-water-water, oil, oil-oil and many other heat transfer medium. Overall heat transfer coefficient of water-water K=2000~3500w/㎡; steam-water K=2500~4000w/㎡; others may be depending on the physical properties of the medium and medium condition. Excellent performance of high heat transfer efficiency, good corrosion resistance, no stain, no blocking, less prone to fouling, maintenance-free, sealed *, smooth operation, small footprint, save investment.

n   Structural principle and characteristic of graphite heat exchanger:

Round-hole type graphite heat exchanger by the columns impervious graphite block heat, oxygen-graphite upper and lower lid and the fluorine rubber (or flexible graphite) O-rings and metal casing and capping, assemble them. Is more advanced, superior graphite heat exchanger performance. Cylindrical shaped graphite for hot block has high of results strength, and easy and solution sealed problem; in sealed in the used fluoride rubber (or flexible graphite) O type circle sealed media, plus loaded pressure spring as thermal expansion and contraction of automatically compensation, to up to sealed keep role; used short channel improve turbulent flow degree makes equipment structure degrees high, and resistance temperature resistance pressure performance strong, and anti-hot impact performance good, and volume utilization high, and heat effect good and easy loaded split overhaul. Corrosive media device vertical holes, transverse hole non-corrosive medium.

n   Structural principle and characteristic of heat exchange units:

Heat exchange unit is a heat network and direct bridge between the user and get heat from a heating network, automatically converted to user needs continuous domestic water and heating water, suitable for air conditioning (heating and cooling), heating water (bath) or other heat exchanging loops (such as floor heating, process water, cooling, etc). Heat exchange units and People's Republic of China Ministry of construction issued the plate heat exchanger unit highly attuned to urban construction industry standards or according to customer's specific requirements and actual design and processing of non-standard units. Heat exchanger unit by plate heat exchangers, circulating pumps, repair water pumps, filters, valves, base, heat meter, distribution boxes, electrical instrumentation and automatic control systems and other components. Heat sources, steam or hot water from the unit's primary water supply into the plate heat exchanger, secondary side water at low temperature after filter removal, also in the plate filter circulation pump, two different temperatures of water through the heat exchanger and transfers heat to the secondary users.