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  Types of Shell and tube heat exchanger Shell and tube heat exchanger  is also called tubular heat exchanger. It is a partition type heat exchanger with the wall surface of the tube bundle enclosed in the shell as the heat transfer surface. Shell and tube heat exchanger has simple structure, low cost, wide circulation cross section, and easy to clean scale; but it has low heat transfer coefficient and large area. It can be made of various structural materials (mainly metal materials) and can be used under high temperature and high pressure. It is the most widely used type. Shell and tube heat exchangers include fixed tube plate steam-water heat exchangers, shell and tube steam-water heat exchangers with expansion joints, floating head steam-water heat exchangers, U-shaped shell and tube steam-water heat exchangers. Corrugated shell and tube steam-water heat exchanger, segmented water-water heat exchanger and other types. The main control parameters of the shell and tube heat ...

The problem of tube oxygen corrosion in  finned tube heat exchanger s has always been a key problem to be solved in the industry. If we can solve the problem of finned tube corrosion in oxygen-containing medium, it will play a positive role in the development of the existing technology. In the long-term production practice, Murphy also summarized some methods to solve the problem of internal corrosion of the fin tube. When designing the heating system of the finned tube heat exchanger, it is necessary to avoid mutual circulation with oxygen as much as possible and to seal as much as possible. When replenishing water to the fin tube, it should be deoxidized. When the finned tube heat exchanger stops heating, it should be fully maintained with a drying method or deoxygenated water. Also, when testing the pressure of the newly installed finned tube heat exchanger, whether it is hydraulic testing or adding solvents, non-toxic rust inhibitors should be used. During use, if the finned tu...

Copper extruded finned tube has excellent heat conduction characteristics. The fins increase the heat exchange area, improve the heat conduction performance, increase the heat exchange rate, and save energy and material. Murphy copper fin tubes are widely used in various types of heaters, heat exchangers, refrigeration equipment, chemical engineering, power station auxiliary machinery, ship auxiliary machinery cooling machine.

There are many types of shell and tube heat exchangers. Under normal circumstances, the shell and tube heat exchanger is divided into: fixed tube sheet type, floating head type, U-shaped tube type, stuffing box type and kettle type reboiler. Today I want to tell you more specifically about the  fixed tube-plate heat exchanger  in the  shell and tube heat exchanger . What is a   fixed tube-plate heat exchanger ? The tube plates at both ends of the fixed tube plate heat exchanger are connected and fixed to the shell by a welding method. The heat exchange tubes can be smooth tubes or low-fin tubes. It is suitable for occasions where the medium on the shell side is clean and not easy to scale and can be dissolved and cleaned. The temperature difference between the two sides of the pipe and the shell side is not large or the temperature difference is large, but the pressure on the shell side is not high. For more details please check  here

In the marine turbine, the  heat exchanger  is to ensure that the turbine is in normal equipment. Of course, there are many common heat exchangers, such as runner type and plate type. The advantages and disadvantages of different heat exchangers are very obvious. The plate type heat exchanger is often used in the electrical equipment of the turbine engineering. This type of heat exchanger is small in size and relatively high in efficiency. It has been used in marine turbines, but it is in urgent need of further promotion. Based on the current situation, the actual application of the plate heat exchanger is introduced in detail. In the marine turbine, heat exchange is undoubtedly a very critical factor to ensure the normal use of the turbine. When the turbine is working, it needs to maintain a certain temperature to ensure the normal operation of the machinery. At present, there are many heat exchangers in the marine turbine. Among them, the plate type is a very important one...

Murphy Plate heat exchangers transfer heat more efficiently than shell & tube units in most applications, due in large measure to the turbulent flow created by the corrugated patterns of their plates. They can pack greater than 22,000 ft2 (2,044 m2 ) of super-efficient heat transfer surface in a single unit with flow rates up to 25,400 gpm (5,768 m3 /hr). They use only 10-50% of the space required by shell & tube units and are much lighter in weight. And, they cost less. www.murphyfinnedtubes.com Murphy Plate & Frame • “U” values several times greater than shell & tube • Can be designed for less than 2°F (1°C) temperature approach • Opens for access within its own footprint • Easy disassembly—simply loosen bolts and roll movable frame back to the support column to remove plates • Low fouling due to corrugations and inherent turbulence • Intermix between fluids virtually impossible due to gasket design • Practically no heat loss—no insulation ...

Murphy  heat exchanger is designed to provide maximum efficiency in transferring heat from one liquid to another or from steam to liquid. It consists of a series of gasketed, embossed metal plates arranged alternately and bolted together between end frames to form channels through which hot and cold media flow. The hot fluid flows on one side of the plate while the cold fluid flows on the other, with the plate itself providing the most effective means to transfer heat from one fluid to the other. Gaskets on the plates seal the channels and provide flow direction. As liquids flow counter-currently through the channels between the plates, the cold liquid becomes warmer and the hot liquid cooler.  www.murphyfinnedtubes.com Most units are designed for a one-pass/one-pass flow arrangement, resulting in all nozzles being installed on the stationary end frame, which facilitates simpler piping arrangements and easier disassembly. Due to its high efficiency, the Murphy ...

The plate and frame type heat exchangers are the most efficient and economical type of heat exchanger available on the market with compact space saving design. The standard material for flow plate is stainless steel, optional Titanium and other alloys are available as well. Murphy offers design, supply and installation of heat exchangers and heat exchange systems for applications such as water to water heating or cooling，milk heat recovery pasteurizer, wine and juices chilling of fluids, protection of high-value cooling and heating equipment, pressure breaker, space-limited process expansions, HVAC, heat recovery from low grade waste streams,viscous fluids or slurries, industrial fluids suitable for high heat transfer rates at low pressure drops. www.murphyfinnedtubes.com Gasketed Plate Design With the large range of plate heat exchangers Murphy has got the optimal technical solution for any possible task, with connection sizes from Ø15 – Ø500 mm coverin...

Braz ed  heat exchanger does not have sealant pad, all the plates are made of  high temperature melt ed  and weld ed copper foil, plate has a unique herringbone corrugated design, can make the fluid in low flow rate   also achieve the effect of turbulence, heat transfer efficiency is high, its volume is usually small, mainly used in high temperature and high pressure, rubber pad can not adapt to the working conditions. It also has certain disadvantages, brazing heat exchanger can not be separated to clean, can not be repaired, the price is slightly higher.   Brazed plate heat exchanger is one of the new equipment in the field of heating and cooling. It has the advantages of compact structure, small footprint, high heat transfer efficiency, convenient operation and maintenance, and the ability to deal with small temperature difference. As a high efficiency and energy saving product, it has been widely used in mining, metallurgy, petroleum, chemical industr...

Plate   Heat Exchanger, sometimes referred to as a gasketed plate heat exchanger or GPHE, provides outstanding efficiency transferring heat from one liquid to another, often water to water, or from steam to liquid. This modular exchanger combines frames, plates and connections to form a variety of configurations. It is found in many of the same duties as shell and tube heat exchangers. The plate heat exchanger is composed of a set of corrugated metal plates with four corner holes for the passage of two liquids for heat transfer. The metal sheet is mounted in a frame having a fixed plate and a movable pressing plate on one side and clamped by a clamp bolt. A gasket is placed over the plate to seal the fluid passages and direct fluid flow alternately into the respective passages to form a heat exchange. The flow, physical properties, pressure drop and temperature difference of the fluid determine the number and size of the plates. The corrugation of the plate not only increases th...

Working principle: The plate heat exchanger is composed of a set of corrugated metal plates with four corner holes for the passage of two liquids for heat transfer. The metal sheet is mounted in a frame having a fixed plate and a movable pressing plate on one side and clamped by a clamp bolt. A gasket is placed over the plate to seal the fluid passages and direct fluid flow alternately into the respective passages to form a heat exchange. The flow, physical properties, pressure drop and temperature difference of the fluid determine the number and size of the plates. The corrugation of the plate not only increases the degree of turbulence but also forms a number of support points sufficient to withstand the pressure difference between the media. The metal plate and the movable compression plate are suspended on the upper guide bar and positioned by the lower guide bar, while the rod end is fixed on the support. On the column, but if one or both of the liquids pass through the heat ...

Plate heat exchanger is a kind of high efficiency, energy-saving heat exchange equipment, with high heat transfer coefficient, compact structure, less material, various forms, easy maintenance, and many other advantages, application domain gradually expanded, has been widely used in machinery, electric power, metallurgy, chemical, textile, beverage, urban heating and other industries and fields, showed a strong competitiveness. Plate heat exchangers are made of metal plates (generally 0 5 ~ 1 0mm in thickness) as heat exchange elements, and are made of stainless steel, industrial pure titanium or other materials pressed by bony plates. Generally, the plate is pressed into various groove or corrugated shapes by the mold, which can not only increase the stiffness of the plate, to prevent the deformation of the plate under pressure, but also enhance the turbulence of the fluid and increase the heat transfer area. Each of the four corners of the plate has a hole, the plate around and ...

Finned tube is a common heat exchange component in our heat exchangers. In these finned tubes, the functions of finned tube in each category are different, the differences are as follows: Single metal composite finned tube is made of aluminum tube rolled as a whole, called aluminum rolled finned tube, no contact thermal resistance, high strength, heat resistance and mechanical vibration, good thermal expansion performance, and has considerable expansion heat transfer surface. This kind of fin tube heat exchanger, the effect is preferred to the series or wrap heat exchanger, is a very wide use of heat exchanger. The single metal composite finned tube can also be directly rolled by steel tube or copper tube. The difference between bimetallic finned tube and single metallic finned tube technology center home page straight  straight  double metal finned tube and single metal finned tube, the difference between finned tube is a common heat exchange component in our heat exchanger...

The raw material of carbon steel tube is round tube blank. The round tube blank is cut and processed by cutting machine to billet with a length of about 1 meter, and then sent to the furnace by conveyor belt for heating. The billets are fed into a furnace and heated at a temperature of about 1200 degrees Celsius. The fuel is hydrogen or acetylene. The temperature control in the furnace is the key problem. Generally more common puncher is tapered roller puncher, this kind of puncher has high production efficiency, good product quality, large perforation diameter, can wear a variety of steel. After perforating, the round tube blank is successively rolled, rolled or squeezed by three high. After extrusion, take off the pipe to determine the diameter. The sizing machine rotates the cone bit into the steel blank at high speed to punch holes to form the steel pipe. The inner diameter of the steel pipe is determined by the outer diameter length of the caliper bit. After the steel pipe dia...

Finned tube heat exchanger still belongs to shoulder-arm heat exchanger to a certain extent. The main feature of the finned tube heat exchanger is that it has an extended heat transfer surface. Therefore, in the process of heat transfer, it is not only carried out on the primary heat transfer surface, but also on the secondary heat transfer surface. The heat of the medium on the high temperature side is not only poured into the medium on the low temperature side once on the surface, but also transfers part of the heat along the fin surface height direction, that is, along the fin height direction, there is a partition poured into the heat, and then pass the heat to the medium on the low temperature side. www.murphyfinnedtubes.com Finned tube heat exchanger in the production of the material will have a certain degree of thermal resistance, in the use of the direct and heat dissipation is inversely proportional, that is to say, the higher the thermal resistance, the lower the h...

When selecting spiral plate heat exchanger equipment, Murphy experts suggest that users should specify the general requirements for heat exchangers, including the specific requirements for the selection of spiral plate heat exchanger equipment should have thermal performance, including the flow of fluid on each side, inlet and outlet temperature, heat transfer, etc. Attention should also be paid to the type of fluid and the fluid's thermophysical properties, physical and chemical properties (such as fouling, corrosion, danger, and impurities, etc.). Clarify the operating conditions, working pressure and environmental conditions of spiral plate heat exchanger equipment; Next, it is necessary to pay attention to the clear technical and economic requirements, such as heat exchanger material, price, weight, size, flow resistance and fan and pump power, operating life, maintenance and cleaning requirements, maintenance cycle, transportation and installation restrictions. www.murph...

Plate spacing in spiral plate heat exchanger, the ripple height or the gasket groove depth is 25% higher than normal, so that can prolong the heat exchange between the liquid on the plate, so that will make heat transfer more sufficient, increases the cold and hot medium temperature, at the same time, it can improve the thermal efficiency, small heat transfer temperature difference is only 1 ℃. Spiral plate heat exchanger heat transfer coefficient is higher, has the characteristics of high efficiency and energy saving, because the liquid into the heat exchanger plate, between turbulence is very developed, the formation of turbulence and support the contact between the plate and there will be more close relationship, many support contact will also makes heat exchanger heat transfer capacity was improved, bearing capacity will be strengthened. Murphy spiral plate heat exchanger plate stiffness is better. Since the thickness and width of the gasket (that is, the volume) on the much larg...

At present, the spiral plate heat exchanger equipment adopts the plate structure form, in most cases, it will be mainly herringbone waviness, from this point of view, in fact, it is a typical network flow plate structure, which is characterized by the fluid channel formed between the plates, the wrong line is full of contacts, the fluid around these contacts form a spiral forward orbit, at this time will produce strong disturbance. The design of the spiral plate heat exchanger on the plate, if increase the fluid flow degree, the actual use, can also reduce the thickness of the bottom layer of laminar flow, effectively improve the convective heat transfer coefficient without phase transition, so as to achieve the purpose of increasing the heat transfer coefficient. https://www.alibaba.com/product-detail/Murphy-Stainless-steel-Plate-Heat-Exchanger_62426429251.html?spm=a2700.icbuShop.41413.25.668c215dVJSQWw Murphy experts proved by experiments that for water medium, when Re=20 ~ 20...

When the stainless steel finned tube is used, pay attention to the position of the scale when the finned tube is pressed back. During the operation, the rubber gasket shall not be pressed excessively, so that the ring ratio reduces the service life of the gasket. When replacing the rubber gasket of the stainless steel finned tube, Murphy experts suggest that the laser welded stainless steel finned tube needs to renew all the segments in the process of operation, so as to effectively avoid the uneven gap between the segments, which will directly affect the heat transfer effect. https://szmurphy.en.alibaba.com/product/62414268795-811592052/Murphy_Aluminum_gas_boiler_laser_heat_exchanger_Laser_Welded_Finned_Tubes_heat_exchange_for_Heat_recovery_steam_generators.html?spm=a2700.icbuShop.41413.11.4da46a21ReV6B6 https://szmurphy.en.alibaba.com/product/62414734126-811592052/Murphy_Copper_industrial_electric_boiler_laser_heat_exchanger_Laser_Welded_Finned_Tubes_heat_exchange_for_Water_H...

In the process of using finned tube heat exchanger, it is necessary to keep it clean effectively. No matter before or after working, the bent net of the equipment should be cleaned, so that the phenomenon of blockage of the heat exchanger can be effectively avoided to a certain extent. The price of finned tube heat exchanger of Murphy is in its scope, and it also effectively includes the price of laser welding stainless steel finned tube. To a certain extent, for the copper aluminum composite fin tube, its price can be calculated not only by meter, but also by ton during operation. Different pricing standards will lead to different prices. https://szmurphy.en.alibaba.com/product/62412153639-811592052/Murphy_Copper_electric_boiler_laser_welded_heat_exchanger_Laser_Welded_Finned_Tubes_heat_exchange.html?spm=a2700.icbuShop.41413.37.5b646a21vXYm0Q The finned tube heat exchanger needs to clean its filter effectively when it is in use, and the whole work can be completed sm...