A Complete Guide to Different Types of Finned Tubes
By adminFeb 17,2021
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Finned tubes serve as heat exchangers that generally use air to cool or heat fluids such as water and oil. These mechanical tubes are used across industries in diesel charge air coolers, oil coolers, hydrogen coolers, waste heat recovery, driers, air conditioning, air heaters, generator coolers, and steam condensers.
Finned tubes are usually used in heat exchangers. But you may wonder what these finned tubes are and why are they used over normal tubes in these exchangers. Here’s everything you need to know about finned tubes.
What Are Finned Tubes?
Finned tubes are elongated flat tubes that are made of aluminum cladded carbon steel and are provided with brazed aluminum fins. These tubes are used in a series in heat exchangers. The advantage they offer over ordinary tubes is that the fins offer greater contact with the liquid outside. This quickens the exchange of heat between the liquid inside the tube and the one outside it. With a normal tube, the rate of exchange of heat would be much slower.
Finned tubes are available in different shapes. They are available as oval tubes, round tubes, and flat tubes.
What Are Their Uses?
Finned tubes are particularly useful in the case of air heat exchangers. In an air heat exchanger, the heat transfer is to take place between a liquid and gas. With the heat coefficient of the airside being lower, a finned tube can be exceptionally helpful. A finned tube increases the surface area and thus helps in faster heat transfer between the components.
Example of Fin Tube Heat Exchangers
Fin tube heat exchangers are used in household appliances and industrial heat exchangers. Fin tube heat exchangers are used in air conditioners and car radiators. The purpose of using a finned tube in an air conditioner is to cool the air passing through it. In a car radiator, it cools the liquid in the tube with the air passing through in crossflow.
Advantages of Using Finned Tubes
Finned tubes offer several advantages:
Increase Heat Transfer Rate
The fins in a finned tube increase the surface area of contact. This allows it to quicken the heat transfer rate.
Improve Heat Transfer Coefficient
In an ordinary tube, the outer surface area is just about the same or slightly different from the inner surface area. In such a case, the fluid with the lowest heat transfer coefficient will drive the entire heat transfer rate. A finned tube increases the surface area significantly. This is particularly helpful when the heat transfer coefficient of the fluid inside the tube is greater than that of the fluid outside the tube.
Reduces Size of the Equipment and Makes Project Cost Efficient
Finned tubes can significantly increase the surface area. The use of a finned tube can cut down the number of tubes used in an application. This results in a considerable reduction in the size of the equipment. In the long run, this can lead to a decrease in the cost of the project.
If you are looking for high-quality finned tubes, you should consult the experts at Anand Seamless Tubes – leading finned tube manufacturers in Ahmedabad!
Everything You Should Know About G Type Finned Tubes
By adminMay 20,2019
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Considered as one of the most important aspects of any gas to gas or gas to liquid type of heat-exchanger, finned tubes are compact units of vigorous and damage-resistant construction.
The outside surface of fin tubes is covered with small fins. The role of these fins is to act as a transfer process and filter. The heat transfer is generally from inside to the outside and reverse. The rate of heat transfer by a particular type of fin tube can depend upon:
Temperature difference between the fluids/gas
Heat transfer between the fluids and the walls of the tubes
The exposed surface
There are various types of finned tubes that finned tube manufacturers produce. And the type required for a particular process depends on the process equipment unit.
G-Type finned tubes are known as embedded-fin tubes where g means grooved. They are formed by twisting a fin strip made of copper or aluminium into a machined groove and back-filling to secure the lock. Base tube material is filled. The G-type fin tube is strong as compared to other tubes. Hence, it is widely used where high-temperature heat transfer is required.
G-Type Finned Tube Features
Compact design
High-performance
Easy installation
Less space required
Less cabling
Optimized surface
Finest technology used
Average corrosion protection
Less energy consumption
Increased reliability
Low maintenance
High mechanical resistance
In G-type finned tubes, the fins are prepared by embedding the metal strip into a groove. The latter is formed on a base tube. Placing the fin on it, back-filling is done – resulting in strong attachment of the fins to the base tubes. Hence, the name G-Fin Tubes has come up. The three processes mentioned above are carried out simultaneously. Maximum heat transfer is expected out of the g-fin tubes as the fins are strongly attached to the base tube.
The G-type finned tubes usually work at high temperature (with around 400 degree Celsius) applications. Made of copper, carbon, or aluminium, these fins have comparatively less resistance towards atmospheric corrosion. On the other hand, mechanical resistance is acceptable. Stainless steel and carbon steel fin materials are also used, but particular processing and tooling of the steel fin strips are necessary. Air coolers, radiators, etc use the g-fin tubes.
Industries Where G-Type Finned Tubes Are Used:
Rubber plants
Power plants
Petroleum industries
Chemical industries
If you are looking for G type fin tubes or grooved fin tubes, get in touch with the experts at Anand Seamless Ltd. by calling +91-9099996851. We can help you choose the most relevant product as per your needs.
What are the Applications of Finned Tubes in Industries?
By adminApr 15,2019
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Finned tubes are a series of tubes which have fins attached on its exteriors. This increases the contact area with the fluid which is outside the tube. This extended outer area augments the heat transfer rate. It also exchanges heat between the outside and inside the tube.
Inside of the tube is for the liquid to flow and the outside has air or some other gas. The main components of heat exchangers in any industry are Finned Tubes. Usually, crossflow happens here and this is due to the radial fins. If you want a counter-flow, use longitudinal fins instead.
In most of the cases, there is an open heat exchanger with the application of finned tubes for air flow. However, internal finned tubes can also be used in a closed heat exchanger.
Finned tubes are made by helically twisting strips on the tubes. They can be longitudinal, transverse, parallel, flat, round, oval, etc. For industrial purposes where the outside flow has to streamline with the tube length, the best finned tube is the one with longitudinal fins. On the other hand, for air coolers, crossflow exchangers, gas flows, shell and tube heat exchangers, or turbulent flows, you can use transverse finned tubes.
High-finned tubes are used to heat and cool down gases in heating, machinery, and plant technologies.
For evaporating and condensing refrigerants or when you have to control the temperature of liquids and gases, you can use low finned tubes. Then there are safety tubes which are also known as double-wall tubes. They have particular leakage paths to separate fluids.
Tubes applicable in oil coolers, condensers, water heaters, etc., are medium-high finned tubes. For specific applications with the best designs, stainless steel finned tubes can be used.
Other Application of Finned Tubes
Finned tubes are used to relay heat in any industry where hot fluid has to be transferred to cold fluid through a proper medium. They expand the exterior of the tube. Finned tubes have the capacity to take the place of bare tubes with reduced volume and cost.
One of the significant feature of finned tubes is to secure the surface area of heat exchanger tubes. Heat transfer is based on the outside area to which the fluid is exposed, temperature difference between the fluids, and the heat transfer between the tube and fluids.
Application of Finned Tubed in Industries
Petroleum Industry
Chemical industry
Wood industry
Food industry
Steel Industry
Plastic molding industry
Glycol dehydration units
Coils for hybrid cooling towers
Printing Machines
Production of surface coatings
Solvent recovery
Cooling of turbine air intakes
Textile production
Greenhouse heaters and breeding
Tanneries
Anti-freeze coils for process air
Paper works
Finned tubes heat exchangers can be applied in various household as well as industrial machineries. Car radiator also used finned tube heat exchangers which cools the hot water in the tubes when air passes through it. This is a crossflow process.
For industrial purposes, finned tube heat exchangers are generally used to heat or cool the air and other gases. Finned tubes have fins attached to its exterior areas. Hence, with the increase in the outside area, the heat transfer rate also increases. Moreover, in the long run, it abbreviates the overall equipment size.
If you are looking to purchase finned tubes for any of the above mentioned industrial applications, call us on +91-9099996851. Being one of the leading finned tubes manufacturers in India, we can help you get products as per your requirements. We also supply seamless tubes made of carbon steel and alloys.
The oil and gas industry in India is among the top 8 industries that practically influences all the major decision of the county. To make the industry run efficiently, there are many plant owners who use different kinds of materials but particularly one stands out from it, and it is the Finned Tubes.
The extruded finned tubes are quite popular with the oil and gas industries, around the world. With its great characteristic to transfer heat to the cold fluids from the hot ones, makes them a proper medium that can handle transfers at great length. They act as a great heat exchanger when one of the transfer variables is gas or air. Normally, the extruded finned tubes have a crossflow which is quite similar to the counterflow.
Another prominent factor that makes the plant managers choose extruded fin tubes is that the fins can actually provide a highly efficient surface area for a heat exchanger tubing. It can also be used as a great heat transfer coefficient, which means that the outside of the tubes are less hot than the insides, letting people work easily around the tubes.
Kinds of Transfers That An Extruded Finned Tube Can Easily Perform
Transfer from vapour to gas
Transfer from liquid to gas
Transfer of thermal fluid to air
The heat transfer depends upon three major factors that include:
The surface area to which a fluid is exposed to
Temperature difference of two fluids involved in the process
Heat exchanger coefficient between the fluids and the tube
Applications of Extruded Finned Tubes:
Coils for hybrid cooling towers
Printing machines
Chemical industry
Solvent recovery
Production of surface coatings
Wood industry
Cooling of turbine air intakes
Greenhouses and breeding
Plastic moulding industry
Anti-freeze coils for process air
Textile production
Food industry
Paper works
Tanneries
Other than this, extruded finned tubes have other major benefits that make it different from other heat exchangers.
Major Benefits of Extruded Finned Tubes
1. Fast Heat Transfer Rate
Finned tubes come along with the tubes, attached to its exterior. This helps the fluids to have additional heat transfer surface area with an increase in the heat transfer rate. This situation will allow a cross flow, due to which the fins play the most important role in this heat exchanger unit.
2. Bigger Outside Surface Area
This can be greatly useful for gas or fluids where fewer tubes are required for the process. This happens as the extruded finned tubes increase the outside surface area letting the tubes work more efficiently. This will help reduce the overall plant and equipment size. This can be greatly beneficial in the long run.
3. Better Heat Transfer Coefficient
With the normal tubes, the fluid that has the lowest heat transfer dictates the complete process of heat transfer and also decides the rate. With extruded finned tubes, this is not the case. It provides a bigger and better surface area due to which it reduces the workload as well as the wastage of money.
Get Superior Quality Extruded Finned Tubes with Anand Seamless Ltd!
Anand Seamless Ltd is one of the leading finned tubes manufacturers in India. With many years of experience in producing quality seamless tubes, we have surely made a name with prominent oil and gas companies like Indian Oil, HP, Reliance Industries and more. Call us at +91-9099996851 to talk to one of our representatives, to know more.
Fin tubes can be recognized to have small fins on its outside surface making everyone detect them easily. These fins are not for show, they act as a transfer mechanism and filter, flowing the heat from outside to inside and vice versa. You can never fix the rate of the heat transfer by merely looking at the tube as it depends upon three factors-
The coefficient of heat transfer between the fluids and walls of the fin tubes
The difference of temperature between the fluids
The surface on which the fluids are exposed
Types Of Fin Tubes
There is a wide range of fin tubes that manufacturers of fin tubes produce. These tubes are used in various industries, inside the heat exchangers. They are used to transfer heat or cold to air, water or chemicals. To name a few industries, these tubes can greatly fit in the petrochemical, power generation, petroleum among many other industries.
When the tubes are manufactured, they go through a corrosion protective process to strengthen it against the failure caused due to corrosion! Some fin tube types are:
1. ‘L’ Fin Tubes
They can work at a maximum temperature of 150 degrees Celsius
It has an acceptable level of atmospheric corrosion resistance
It is made of aluminium and copper
Offers a poor mechanical resistance
2. ‘LL’ Fin Tubes
They can work at a maximum temperature of 180 degrees Celsius
It has an acceptable level of atmospheric corrosion resistance
It is made up of aluminium and copper
Offers a poor mechanical resistance
3. ‘KL’ Fin Tubes
They can work at a maximum temperature of 260 degrees Celsius
They have an acceptable level of atmospheric corrosion resistance
They are made up of aluminium and copper
Offers acceptable mechanical resistance
4. ‘G’ Fin Tubes
They can work at a maximum temperature of 400 degrees Celsius
They have a poor level of atmospheric corrosion resistance
They are made up of carbon, aluminium and copper
Offers acceptable mechanical resistance
5. Extruded Fin Tubes
They can work at a maximum temperature of 285 degrees Celsius
They have an excellent level of atmospheric corrosion resistance
They are purely made up of aluminium
Offers excellent mechanical resistance
Why Companies Choose Extruded Fin Tubes?
Most of the industries choose extruded fin tubes as they offer a better level of resistance against corrosion. This helps them to be highly durable thus letting you have a strong heat exchanger. Along with this, they can withstand mechanical stress, thus provide flawless results. It is generally used with industries that do not require the material to reach a very high temperature.
Get Them From the Leading Extruded Finned Tube Suppliers in India!
Our extruded fin tubes are manufactured with great precision in the most advanced fining machine. We also supply our tubes with utmost care and professionalism with our special process to assure they adhere to the industry standards and required safety measures. At Anand Seamless Ltd, we take great pride in providing our clients with the best quality at a great deal. Call us on +91-9099996851 or drop us a mail on inquiry@anandseamless.com to get an instant quote! Get in touch today.
