The finned air heater is composed of a perforated plate frame and a radiating pipe, and is one of the most widely used heat exchange equipment for industrial air heating. It is often used when the fluid at one end is at a high pressure or the heat transfer coefficient is much larger than the...
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The finned air heater is composed of a perforated plate frame and a radiating pipe, and is one of the most widely used heat exchange equipment for industrial air heating. It is often used when the fluid at one end is at a high pressure or the heat transfer coefficient is much larger than the other end.
Its core heating element is fins. Why should fins be installed on the surface? An important reason is to increase the heat dissipation area. What’s more, When selecting a heater, the heat exchange effect is an important reference factor for selection. At this time, the heat dissipation effect of the fins gives it a great advantage.
However, according to experiments, the more fins are not the better.When the heat transfer area of the heater fin doubles, the heat transfer coefficient cannot be doubled, but a discount is required, and when the fin is higher, the discount is greater or even lower than 0.5, which is It shows that after the fins reach a certain height, the increased area has less effect on heat transfer, and the economic efficiency of adding fins also decreases.
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