Generally it will strengthen the heat transfer outside piping by the means of the ambient air as the cooling medium and by heat transfer area entended relying on the fin tube, as well as take away heat by air temperature rise after the air across the fin tube to achieve the purpose of cooling, condensing the heat fluid inside the pipe.

Air will be available to acquire as a cooling medium; when the dry air cooler is used, the plant selection is basically not limited by water source; air corrosion is low, special scaling measures shall be unneccessary,the operation cost is low due to air cooling pressure reduction; air cooling system maintenance cost is low, which is generally 20% ~ 30% of water cooling; and the environmental pollution is also low.

Generally it is used in the occasion where the terminal temperature of medium shall be higher than the environment design temperature 10-15 ℃ or more.