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How To Choose an Ideal Fin Tube Radiator?

How to choose a suitable fin tube radiator?

General Knowledge on Finned Tube Radiator

Finned Tube Radiator, also named Radiator, Heat Pipes, Air Heater or Heat Exchanger, cooling the air in a cold medium or heating the air with a hot medium, or recovering the waste heat through cold water. It is a main equipment in heat exchanger device. With high temperature water inside, the steam or high temperature conduction oil can heat the air; with saline water or low temperature water inside, the air can be cooled.

Application of fin tube heat exchanger

The radiator is widely used as hot air heating, air conditioning, water/ air coolers and chillers, condensers, dehumidifier, drying and so on in various industry such as light industry, construction, machines, textile, electronics, food, starch, medicine, metal, painting, etc.

Radiator Structure

Commonly, it is formed by heating pipes, inlet and outlet pipe and frames.

The heating pipe is composed of tube bundle (made of fin and base tube). Its quality will effect heat transfer efficiency, arrangement mode affect air resistance and installation method affect thermal expansion and contraction.

The commonly used heat pipe type are as follows:

Carbon Steel Spiral Crimped Fin Tube with zinc hot dip galvanized

Steel and Aluminum Composted Fin Tube/ Extruded Fin Tube

Copper Wound Fin Tube (Copper Fin and Copper Tube with hot dip coating tin)

Copper and Aluminum Composited Fin Tube

Stainless Steel Crimped Fin Tube (Stainless Steel tube and SS Fin)

High Frequency Welded Fin Tube (HF Welded Fin Tube)

For carbon steel fin tube, zinc galvanized is very important, which can fill in gap, enhance fin solidity, improve heat transfer efficiency and corrosion resistant.

For copper fin tube, tin coating is important.

What should be considered when design?

When design the radiator, we should consider following factors: heat radiating area, ventilation net sectional area and heat conductivity. Radiating area is the main cost specification as it will affect heat dissipating capacity; ventilation area will affect flowing resistance and heat conductivity affects heat transfer performance.

Determined selection specifications for drying radiator are heating medium (steam, hot water), hot wind and materials.

Steam: pressure and temperature

Hot Water: inlet temperature, outlet temperature and flow capacity

Hot Wind: wind flow, inlet wind temperature, humidity, outlet wind temperature and air resistence.

Materials: Heat Loss and evaporation quantity.

For Insulated radiator, the key specifications are heating medium (steam, hot water), space, territory and thermal insulation.

Steam: pressure and temperature

Hot Water: inlet temperature, outlet temperature and flow capacity

Space: Length * Width * Height

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Email:finnedtube@163.com; minyangfintube@gmail.com

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