Aluminum finned tubes are mainly used in refrigeration systems for cold storage ranging from 10℃ to -45℃ and are ideal evaporators for various types of frozen and refrigerated food storage. The heat transfer coefficient of aluminum finned tubes at an evaporation temperature of -40℃ to 0℃ is approximately K ≈ 9–14 W/m²·℃, while the heat transfer coefficient of steel finned tubes at the same evaporation temperature is approximately K ≈ 8–13 W/m²·℃. Therefore, for the same cold storage (under the same load), the evaporator area required for aluminum finned tubes is smaller than that for steel finned tubes. Additionally, considering the cost of aluminum material and advanced die-casting technology, the unit area price of aluminum finned tubes is higher than that of steel finned tubes. However, the performance of aluminum finned tubes is significantly better than that of steel finned tubes, making the overall cost-performance ratio of aluminum finned tubes superior to that of steel finned tubes.