Structure of L-shaped and double L-shaped finned tubes
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In air coolers, L-type and double LL-fin tubes are commonly used. How are the fins assembled to the base tube? Is it overall or wrapped around the base tube? Can the fins be replaced separately?
It is wound by specialized fin tube winding machines, which wrap aluminum strips around the base tube in layers. To replace the fins, it is necessary to remove the entire heat exchange tube from the heat exchanger, then take off the fins and wind new strips around them. Although this can be done in theory, it is generally not done in practice