copper fin tube heat exchanger, finned tube, aluminum fin tube

Detailed Product Description

Material:C12200 / C12000 / C70600Outer Diameter:47mm
Inner Diameter:22mmWall Thickness:1.5mm
Fin Height:11mmFPI:8
High Light:spiral finned tubes, spiral tube heat exchanger, Copper Spiral Finned Tube

Heat Exchanging Copper Spiral Finned Tube with Extruding Process

Quick Details:

1. Roll forming process
2. Higher heat transfer ability comparing to HF welding and Wrapped fin tube
3. Save cost and assembling space due to higher efficiency
4. ISO 9001:2008 quality certified
5. Well sold in USA, Australia, Germany, etc.

Tube Number Code System

Take Tube Number M-11045.180100.00 as example

M1104518010000

 M=Medium Height

H=High

L=Low

Minimum fins per InchFin Height in 1/10 mmMinimum Root Diameter in 1/10 mmRoot Wall-thickness in 1/100 mm

Code of Inner Surface

00=plain

01=Undulated

02=Grooved

Descriptions:

Process Flow:

  1. Order raw material based on customers’ request.
  2. Inspection on raw material when arrived
  3. Roll forming the fin tube, while monitoring the whole process
  4. Cut into customized length
  5. Inspection on specification of finned tube
  6. If required, we provide de-fin process, soft annealing, bending and coiling, welding connectors
  7. Clean procedure, pressure test, drying and packing

Finned tube:

The finned tube provide by us is Extruded Type, which is different from the ones through HF Welding and Wrapping method. The fins are obtained by roll forming the outer surface of a soft seamless plain tube. The technology simply squeezes the wall thickness transforming into straight fins on the tube. So the fin and the tube are integrated and inseparable, which avoids the heat resistance between fin and tube, and optimizes heat exchange efficiency. Based on this structure, the Extruded type can survive more severe working conditions than other finned tubes. Also it, on the other hand, shows several unique features such as enhanced physical structure, resistance to vibration, anti-corrosion ability, and long service life, etc.

Under this technology, there are two major types of finned tubes available with us, Single metal tubes and Bimetallic tubes. The former uses Copper, Aluminum, and Copper Nickel alone. The later has a core tube on the inside made of harder material. In this case, the outer tube is rolled onto the core tube in order to provide for a tight bond and good thermal contact between the two tubes.

Customized finned tube is available. The specification table is followed below. If required, the fin tube can be made into various forms after soft annealing process. They can be used for cooling and heating in a large scale of conditions. For example, coils in water heater, oil cooler in large machines, heat transfer part in boiler and heat recovering system, air-conditioning and refrigeration industry as condenser part or evaporator part, etc.

The material for our fin tube covers Copper(C10200, C12000, C12200), Copper Nickel(C70600), Aluminum(1060), Aluminum alloy, Aluminum-Steel(bimetallic), Aluminum-Stainless Steel(bimetallic), Aluminum-Copper(bimetallic), Aluminum-Copper Nickel(bimetallic), Copper-Copper Nickel(bimetallic).

Specifications:

Customized Outside diameter and Inside Diameter
Fin Height0~12mm
Fins per Inch5~26
Fin Thickness0.3~0.5mm
Wall thickness0.7~2mm

Advantage:

  1. Optimized inner to outer surface ratio
  2. High heat exchange rate
  3. Enhanced structure due to the roll forming process
  4. Flexible as straight tube or bent or coiled heat exchangers
  5. Low heat resistance between fins and tube
  6. Strong resistance to shock and thermal expansion and contraction
  7. Cost and energy saving due to long service life and high exchange rate

Applications:

The fin tubes are mainly used in heating(gas-fired boilers, condensing boilers, flue gas condensers), in mechanical and automotive engineering(oil coolers, mine coolers, air coolers for diesel engines), in chemical engineering(gas coolers and heater, process cooler), in power plants(air cooler, cooling tower), and in nuclear engineering(uranium enrichment plants).

4 Types of Heat Exchangers and Applications

Have you ever been driving down the highway and seen smoke drifting up from a smokestack? The truth is, all that smoke is wasted energy that could be used for another purpose. That’s why heat exchangers exist. A heat exchanger allows the heat from a fluid (liquid or gas) to pass through a second fluid without the two ever coming into direct contact with each other. For example, a heating furnace burns natural gas that is carried over water by pipes. If the gas and the water came into direct contact, the heat exchange would stop and the water would never warm up.

copper fin tube heat exchanger, finned tube, aluminum fin tube

Even though all heat exchangers perform the same function, there are different types that have varied applications. Learning about these different heat exchangers will help you determine what the right equipment is for your business. Let’s take a look at the 4 types of heat exchangers and their applications below:

1. Double Tube Heat Exchangers:

Double tube heat exchangers use what is known as a tube within a tube structure. There are two pipes where one is built inside the other. Just like the example above, one fluid flows through the inner pipe while the second fluid flows around the first fluid in the outer pipe. This type of heat exchanger is known for being the most basic and affordable of all. Its size makes it ideal for tight spaces, allowing for some extra flexibility in the layout of the manufacturing process.

2. Shell and Tube Heat Exchangers:

Out of all the types of heat exchangers, shell and tube heat exchangers are the most versatile. A shell and tube heat exchanger is designed with a number of tubes placed inside a cylindrical shell. The popular design of this type of heat exchanger allows for a wide range of pressures and temperatures. If you need to cool or heat a large amount of fluids or gases, the application of the shell and tube heat exchanger is an option to consider. While smaller in size compared to some of the other types, a shell and tube heat exchanger can be easily broken-down, making cleaning and repairs easy.

3. Tube in Tube Heat Exchangers:

Similar to the other types of heat exchangers, a tube in tube heat exchanger is comprised of two tubes, one for each fluid. However, the tubes are coiled together to form an outside and inside pattern. The application for a tube in tube design can get fairly creative. Since the tubes are coiled together, most designs for this type are compact. Applications for a tube in tube heat exchanger center around high temperature and high pressure. Since it runs at a higher output, a tube in tube heat exchanger tends to have greater efficiency.

4. Plate Heat Exchangers:

While all of the types of heat exchangers discussed so far have a similar design, the plate heat exchanger is the exception. Metal plates are used to transfer heat between two fluids. The plate is a metal shell, with spaces inside each plate that act as hallways for fluids to travel through. With a plate heat exchanger, there is a greater surface area in contact with the fluids, so it has better rates of heat transfer compared to all other types. Although plate heat exchangers can be more expensive, the efficiency gained by the design is a big plus. This type of heat exchanger is best used in places like power plants because of its durability and low repair rates.

WHAT ARE THE DIFFERENT TYPES OF HEAT EXCHANGERS?

Most heat exchangers in hygienic processing transfer heat indirectly from warmer fluids to cooler fluids without the fluids mixing together. Heat exchanger types vary to meet requirements for processing efficiency, cost of ownership, and maintenance. In this blog, we describe plate and frame, shell and tube, and scraped surface heat exchangers used in food, beverage, dairy, and pharmaceutical processing.

With supply change challenges among the latest high-priority concerns for contractors and system operators, our Guide to Choosing the Right Heat Exchanger is an invaluable tool for processors, production managers, and mechanical engineers. In this article, we introduce the types of heat exchangers used in food, dairy, beverage, and pharmaceutical processing.

PLATE AND FRAME HEAT EXCHANGER

Plate and frame designs feature corrugated parallel plates separated from each other by gaskets that control the alternating flow of hot and cold fluids over the plate surfaces.

A frame plate and a pressure plate compress gasketed plates together with tightening bolts. Gasketed plates and the pressure plate suspend between an upper bar and a lower guiding bar. The simple mechanical design enables easy cleaning and capacity changes by adding or removing plates.

Hot or cold media flows in alternating channels with processed fluids, and heat transfers from the warmer channel to the cooler channel.

Rods hold aligned plates in place in the heat exchanger frame.
With tightening rods removed, plates are easy to add, remove, clean, or replace.
Heating/cooling media flows in alternating channels between plates.

Because of the relatively narrow path between plates and the corrugated design of plates, which create turbulence, plate and frame designs are well-suited to heating fluids of low to medium viscosity.

When fluids are moderately viscous (thick) or include small amounts of particulates, wider gaps between plates can help maintain flow requirements. Wide gaps between plates allow particulates to pass between plates without obstructing flow.

Standard plates typically feature a chevron pattern to maximize plate strength at high pressures. Plates may have different chevron angles to optimize heat transfer for specific pressure drops.

Wider-stream plates have fewer contact points, so they help prevent blockages. They are especially effective for raw juice applications with heating by liquid or steam.

When used for fibrous liquids, viscous, or fluids with particulates, two features of wide-gap plates may ease the flow of fluids or particles:

  1. Wider gaps between plates than standard designs
  2. Plate pattern

Double-walled plates consist of two sheets formed together to prevent media from mixing in the event a crack forms in one of the plates.

Gaskets between plates seal the channels to keep fluids separate, to guide flow, and to prevent leaks. Gaskets fit into specially designed plate grooves

Gaskets can be clipped or glued to plates. Clips secure gaskets to the plate to prevent gaskets from moving and to prevent misalignments and leaking. Clip-on gaskets reduce the time required for re-gasketing.

Regasketing of clip-on gaskets is a process of taking off the old one and clipping on a new one.

For glued gaskets, the process is to remove the old one, clean the sealing surface, glue and heat-treating to set glue.

Plates hang from a carrying bar and a guide bar keeps plates vertically aligned. Operators compress the plates between the end plate and pressure with tightening bolts and nuts.

Typical applications for plate-and-frame heat exchangers include:
  • Low to medium viscosity products with little to no particulate: milk, cream, ice cream mixes, beverages, beer, beer wort.

Standard Plate Gap
Channels are all consistent size

Single-sided WideGap
One extra wide channel for fibrous/dirty fluid (A) and one channel for non-fibrous fluids (B)

Double-sided WideGap
Two wide channels for fibrous/dirty fluids (C)

SHELL AND TUBE HEAT EXCHANGER

Shell and tube heat exchangers transfer heat between fluids that pass through a bundle of tubes and fluids within a large shell vessel that surrounds the tubes. Tubes inside the shell can enable processing of fluids that are more viscous or contain more particulate than a plate and frame heat exchanger.

Because applications differ widely, shell and tube designs have evolved to meet specific processing requirements.

Monotube heat exchangers — also called tube-in-tube, and jacketed tube — consist of an external shell and a single inner tube. Monotube designs are used in heat-treating applications for products that many times include large particles or have high-pulp or high-fiber ingredients.

Annular models of tube heat exchangers apply heat to product from the inside and outside simultaneously to prevent layering. Annular space designs typically have three to four concentric tubes.

Multitube types have a bundle of inner tubes. They are designed for processing heating, cooling, and heat recovery of low viscosity products that include pulp, fibers, and particulates.

Single tubesheet design: Tubesheets hold tubes in place at one end of the shell. When tubes are placed inside a shell, tubesheets cap one end of the shell to contain heating or cooling fluids. In addition to the tubesheet, baffles hold tubes in place within the body of the shell.

Double tubesheet design: For applications where detecting leaks or mixing of the tube-side fluid with the shell-side fluid is especially warranted, double tubesheet designs afford easy spotting of both.

The risk of mixing between product and heating/cooling fluid is greatly reduced because as product flows through the tubes, the heating/cooling fluid is sealed in the shell by the first tube sheet, and the second tube sheet seals the product.

The gap between the two tubesheets is open to view for easy leak detection. While typically a feature of pharmaceutical processing, double-tubesheet designs can be used in any application utilizing a shell and tube heat exchanger.

Typical applications for shell-and-tube heat exchangers include:
  • Low to medium viscosity products: depending on specific product selected can contain varying size of particulate. Beverages with pulp, purees, WFI, lotions, gels, high fouling dairy products.

SCRAPED SURFACE HEAT EXCHANGER

Some applications require heat transfer to highly viscous and/or sticky products. In those applications, scraped surface heat exchangers are the best method to provide effective heat transfer due to the scraping blades that keep product from settling on the interior surfaces.

Product enters a cylinder at the bottom of the scraped surface tube. Heating or cooling fluids travel in a counter-current flow in a cylinder surrounding the product channel.

Blades inside the product channel remove product from the channel wall to ensure uniform heat transfer to the product.

The scraping blades are made a variety of materials to meet different processing requirements, and are designed specifically for gentle product handling to avoid compromising product quality and consistency.

Scraped surface exchangers can be mounted vertically or horizontally. Inside, an electric motor turns a rotor fitted with scraping blades.

To prevent damage to product, rotors turn and product the move through the heat exchanger in the same direction, with product entering at the bottom and exiting at the top.

The heating surface is polished to a high finish on the inner surface.

The seals are made of single carbon mechanical, carbon flushed / aseptic, hard face and hard face flushed / aseptic. Suitable materials will be selected for special applications.

Typical applications for scraped surface heat exchangers include:
  • Viscous products: Ketchup, mayonnaise, hummus, peanut butter, puddings, salad dressings, bread dough, gelatine, baby food, skin lotions, and shampoos.
  • Heat-sensitive products: Egg products, fruit purées, cream cheeses, and fishmeal.
  • Crystallizing and phase changing products: Coffee/tea extracts, icings and frostings, sugar concentrates, margarines, shortening, spreads, gelatine broth, lard, fondant, and, beer and wine.
  • Particulate products: Meats, poultry, pet foods, jams and preserves, and rice puddings.
  • Sticky products: Caramel, cheese sauces, processed cheese, gums, gelatine, mascara, and toothpaste.

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