What are the advantages of fully welded plate heat exchangers?

1. All-welded plate heat exchanger: high heat transfer efficiency.

In the plate structure, the all-welded plate heat exchanger adopts a detachable plate heat exchanger, and its complex fluid flow form can be produced by changing the shape and spacing of the plates, and then exerts its heat transfer ability to a certain extent, and the turbulence effect can be achieved when the Reynolds number is hundreds, and the heat transfer performance is higher, and the total heat transfer coefficient is 3-5 times that of the shell and tube heat exchanger compared with the shell and tube heat exchanger; Under the same working conditions, its area is only 1 3-1 4 of the area of shell and tube heat exchanger; In addition, the fouling coefficient of the all-welded plate heat exchanger is small, which is only 1 5 of the tubular heat exchanger, so its heat exchange performance is good.

2. All-welded plate heat exchanger: small pressure loss.

In this case, all the surface of the plate participates in the heat exchange, in the flow channel, the medium can flow without dead zone, which can reduce the consumption of kinetic energy to a certain extent, and further save the operating cost.

3. All-welded plate heat exchanger: not easy to scale.

After the corrugated plate is welded around the perimeter, it is affected and restricted by thermal stress during operation, resulting in the free expansion and contraction of the inner side of the plate, and it is not easy to form the surface scale layer of the plate.

4. All-welded plate heat exchanger: compact structure and small footprint.

The all-welded plate heat exchanger has a compact structure, a large expansion range of suitable space conditions, and can be exchanged freely. The heat exchange area in the unit area is 2-5 times that of the shell and tube heat exchanger, and there is no need to reserve the maintenance space for extracting the tube bundle, and when the same heat exchange task is realized, the floor area of the all-welded plate heat exchanger is about 1 6-1 10 of the shell and tube heat exchanger, which can greatly reduce the infrastructure investment cost.

Guangzhou Force and Hyde.

1. After the plate is staggered around it, due to the phenomenon of thermal expansion and cold contraction during operation, the internal stress of the plate is released, which will automatically fall off the dirt on the surface of the plate. Usually, the dirt thermal resistance is only 1 5 1 4 of the dirt thermal resistance of the tubular heat exchanger.

2. Due to the full and uniform heat exchange of the plates, the corrugation depth varies widely, and the flow is smooth regardless of whether the fluid is in the flow channel between the plates or between the tubes, without dead zones and with little resistance loss.

3. The heat transfer efficiency is high, and almost all the surfaces of the plates participate in heat exchange.

4. The same fluid can reach turbulent flow when the Reynolds number is 4000 6000 in the tubular heat exchanger, and when the Reynolds number is 100 300 in the all-welded plate heat exchanger, it can reach the turbulent state.

5. Light weight, only 1 5 1 4 of shell-and-tube heat exchangers with the same heat exchange area.

6. It occupies a small area, which is equivalent to the detachable type. Compact construction up to 250 m2 m3.

7. The applicable temperature is -200 900, the pressure change range is vacuum, and the maximum assembly area can reach 6000m2.

Advantages: high heat exchange efficiency, small heat loss, compact and lightweight structure, small footprint, wide application, long service life and other characteristics. Under the same pressure loss, its heat transfer coefficient is 3-5 times higher than that of tubular heat exchanger, and the floor area is one-third of that of tubular heat exchanger, and the heat rate can be as high as more than 90%.

Plate heat exchangers are recommended for small footprint and easy installation and disassembly.

Applicable working conditions:

1. Chemical industry: it can be used in the alkali industry to cool or heat various concentrations of electrolyte and lye; sulfuric acid cooling; desalination process, thermal **, etc.; Cooling, heating, condensation, reboiling, etc. of heat transfer liquids. Production industries such as biological products and cosmetics.

2. HVAC: It can be used for central heating, and the urban centralized heating pipe network is sent to the user through the plate heat exchanger.

3. Air conditioning: plate heat exchanger is used in air conditioning system and can be used in conjunction with air conditioning.

4. Thermal system: heat for the wastewater, waste gas, waste smoke, etc. discharged inside the factory.

5. Heating: central heating for residences, factories, buildings, etc.; Heating, water supply, gas supply and air conditioning in restaurants, guesthouses, etc.; Heating for heating of thermal power plants, domestic hot water, boiler area heating, etc.

6. Petroleum industry: plate heat exchanger is used in the treatment of acid water, cooling water and gas purification system in the factory; Heating and cooling of oil, condensation cooling of gas.

7. Food industry: plate heat exchanger can be used for heating and cooling, sugar making, sterilization, cooling of wort in beer, and manufacturing monosodium glutamate. It can also be used for the cooling and sterilization of salt, dairy products, vinegar, cooling and heating of animals and plants, etc.

8. Oil industry: it can cool vegetable oil, cooling oil, emulsified oil, sodium hydroxide, etc.

9. Pressure blocker for high-rise buildings.

Disadvantages: 1) Poor sealing and easy leakage. It is more troublesome to replace the gasket frequently.

2) The use pressure is limited to a certain extent, generally not more than 1MPa.

3) The operating temperature is limited by the temperature resistance of the gasket material.

4) The flow channel is small, which is not suitable for gas-to-gas heat exchange or steam condensation.

5) It is easy to clog and is not suitable for fluids containing suspended solids.

6) The flow resistance is larger than that of shell and tube type.

Everything has two sides: the same goes for the brazed heat exchanger, which has the advantages of small size, high heat exchange efficiency, high pressure and temperature resistance, and durability. The disadvantages are: the channel is small and easy to block; It is inconvenient to clean, easy to freeze and easy to freeze.

The water quality requirements are high, the channel is smaller than other heat exchangers, and there is copper as the solder, which is easy to corrode.

Once the water quality is not good (containing impurities), it is very easy to block, and it cannot be cleaned after blockage, but can only be replaced.

1) Poor sealing, easy to leak. It is more troublesome to replace the gasket frequently.

2) The use pressure is limited to a certain extent, generally not more than 1MPa3) The use temperature is limited by the temperature resistance of the gasket material.

4) The flow channel is small, which is not suitable for gas-to-gas heat exchange or steam condensation.

5) It is easy to clog and is not suitable for fluids containing suspended solids.

6) The flow resistance is larger than that of shell and tube type.

1. High heat transfer coefficient. The flow channel of the plate heat exchanger is small, the plate is a waveform, and the cross-section changes are complex, so that the flow direction and flow rate of the fluid are constantly changing, and the disturbance of the fluid is increased, so that the turbulent flow can be reached at a small flow rate, and it has a high heat transfer coefficient. It is especially suitable for liquid-liquid heat exchange and fluid heat exchange with large Rudu.

2. Great adaptability. The required heat transfer area can be achieved by increasing or decreasing the plates. A heat exchanger can be divided into several units and can be adapted for heating or cooling between several fluids at the same time.

3. Compact structure, small size, less consumables. The heat transfer area between the volumes of each cubic meter can reach 250 m2, and only about 15 kg of metal is required per square meter of heat transfer surface.

4. High heat transfer coefficient and low metal consumption, so that the heat transfer effectiveness can reach more than 85%-90%.

5. Easy to disassemble, wash and repair.

6. The fouling coefficient is small. Due to the large flow disturbance, the dirt is not easy to deposit; The plates used are of good material and have little corrosion, which makes the fouling coefficient value smaller.

7. Plate heat exchangers are mainly made of metal plates, so the raw materials are cheaper than those of the same kind of metal.

According to the plate connection form, it can be divided into two types: gasket connection and welding.

The pressure resistance and temperature resistance of the gasket connection are limited, and the high temperature and high pressure resistance of the welding are limited.

Force and Hyde. Plate heat exchanger, with high heat exchange efficiency, small material flow resistance loss, compact structure, sensitive temperature control, large operation flexibility, convenient assembly and disassembly, long service life and other characteristics, can handle a wide range of materials, from ordinary industrial water, to high viscosity liquid, from high health requirements of food liquids, pharmaceutical materials to acid and alkali liquids with a certain corrosiveness, from liquid materials containing granular powder to suspended liquids containing a small amount of fiber can be treated by plate heat exchanger. It can be used for heating, cooling, evaporation, condensation, sterilization and disinfection, heat ** and other occasions.

Such as cooling the internal circulation of generator sets and rectifiers; used in metallurgy, mining and other mechanical lubricants; Sterilization and disinfection of hydraulic station, egg liquid, edible oil, sterilization of beer and wine; Used in the textile industry, paper industry, waste heat**; Collect condensate and provide central heating; steam to water; Intermediate heat transfer in boiler deaeration system, etc. At present, it has been widely used in metallurgy, mining, petroleum, chemical industry, electric power, medicine, food, chemical fiber, textile, papermaking, shipbuilding and central heating and other industrial sectors.

Kuanxin. The plate heat exchanger is characterized by a precise multi-point positioning system, and a four-corner positioning system with a corner hole diameter of less than 100 mm allows the plates to be accurately fitted together with the upper and lower guide rods as the axis. The five-point positioning system of models with corner hole diameters of 150 mm or more allows the positioning of plates to be determined by multiple metal-to-metal contact points.

Among them, the contact point of the upper and lower guide rods can move the plates up and down, and the wide letter multi-point positioning technology allows the plate group to move back and forth on the guide rod without resistance, which is easy and simple to maintain, and the user can make the plates accurately fit and completely reset when reloading, ensuring that the heat exchanger is more durable.

There are many characteristics of plate heat exchanger, mainly the advantages of small footprint, high heat exchange efficiency, small heat loss, and convenient maintenance and cleaning in the later stage.

Our company undertakes the installation, upgrading and transformation of heating machine room, plate heat exchanger maintenance and cleaning and other related businesses, and the company's employees have more than 10 years of industry experience and have served the world's top 500 enterprises for many years. Customers are located in Beijing, Tianjin, Hebei, Northeast, Northwest and other regions, specializing in providing heat exchange solutions for various working conditions.

The sealing is poor and easy to leak. It is more troublesome to replace the gasket frequently.

The use pressure is limited to a certain extent, and the use temperature of more than 1MPa is generally limited by the temperature resistance of the gasket material.

The runner is small, and it is not suitable for gas-to-gas heat exchange or steam condensation.

It is easy to clog and is not suitable for fluids containing suspended solids.

The flow resistance is larger than that of the shell and tube type and the jujube.

Hello landlord, Hepps official customers will serve you wholeheartedly!

Main advantages of brazed plate heat exchanger:

1. Compact structure and easy installation.

2. Light weight, only equivalent to 20 30% of shell and tube heat exchanger 3, durable, able to withstand high temperature and high pressure.

4. The fouling coefficient is low, and the high turbulence reduces the fouling coefficient, thereby reducing the number of cleaning.

5. High heat transfer efficiency and low water consumption.

Hope you can answer, hope!

The sealing is poor and easy to leak. It is more troublesome to replace the gasket frequently.

The use pressure is limited to a certain extent, generally not more than 1MPa

The operating temperature is limited by the temperature resistance of the gasket material.

The runner is small, and it is not suitable for gas-to-gas heat exchange or steam condensation.

It is easy to clog and is not suitable for fluids containing suspended solids.

The flow resistance is larger than that of shell and tube type.