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What is the purpose of using finned tubes in heat exchangers?

What is the purpose of using finned tubes in heat exchangers?

Finned tubes are the main components of heat exchangers. They are a series of tubes where fins have been added on the outside to increase the contact area with the outside fluid, to exchange heat and between the fluid inside the tube and the fluid outside the tube.

What are the practical applications of heat exchangers?

Table 1 – Industries and Applications of Heat Exchangers by Type

Type of Heat Exchanger Common Industries and Applications
Evaporators/Boilers Distillation and refinement processes Steam trains Refrigeration HVAC
Air Cooled/Fan Cooled Limited access to cooling water Chemical plants and refineries Engines Power plants

Where is finned tube heat exchanger used?

Finned tube heat exchangers generally use air to cool or heat fluids such as air, water, oil or gas, or they can be used to capture or recover waste heat. These heat exchangers can used in a broad range of industries including oil & gas, power generation, marine and HVAC&R.

What are the applications of fins in heat transfer?

Uses. Fins are most commonly used in heat exchanging devices such as radiators in cars, computer CPU heatsinks, and heat exchangers in power plants. They are also used in newer technology such as hydrogen fuel cells. Nature has also taken advantage of the phenomena of fins.

Why do heat exchangers have fins?

This is primarily because fins are used for increasing the surface area for convection heat transfer. From a heat transfer perspective, the fin thickness is chosen the thinnest and is of secondary importance for industrial heat exchangers because of the limited range of permissible fin sizes [2].

What is a tube in tube heat exchanger?

Exergy LLC, tube-in-tube heat exchangers consist of two tubes, an inner and an outer coiled together. This unique, compact design prevents thermal fatigue, increases efficiency and reduces the overall size. It is ideal for high temperature, high pressure and low flow applications.

What are the applications of fins?

Application of fins:

  • Radiator used in automobile.
  • On engine surface in bikes.
  • Compressors.
  • Codensers of refrigerator or AC.
  • On electric transformers.
  • On electric motor.
  • In other electric and electronic components.

What is the effectiveness of a fin?

The effectiveness of the fin is the dimensionless parameter which can be measured the ratio of the heat transfer from the fin to the heat transfer occupied by the fin without fin attached.

What is the primary purpose of fins on heat exchanger walls?

Fins are used in a large number of applications to increase the heat transfer from surfaces. Typically, the fin material has a high thermal conductivity.

What are the types of fins commonly employed in industrial heat exchangers and what fin factors effect heat transfer?

Most commonly this heat exchanger type is for gas-to-gas heat exchange. Various fin geometries such as triangular, rectangular, wavy, louvered, perforated, serrated, or the so-called offset strip fins are used to separate the plates and create the flow channels [6].

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