- 風冷式蒸發器：強制送風速度快速，建造成本低，優勢在於自動除霜不需人工。
- 鋁管：（太陽管／星輪管）節能，但若故障，維修成本高，不易維修，維修時間長，除霜需要人工，鋁盤管採二次冷媒無機械設備，因而無噪音且熱交換效率高，庫內溫度曲線平穩，由於溫度平穩儲存物品保存期限可拉較長。
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Air-cooled evaporator:Forced wind delivery speed is fast, construction costs are low, the advantage is that automatic defrosting does not require labor.
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Aluminium tube：(Sun tube/ star wheel tube) energy saving, but if the fault, maintenance costs are high, not easy to repair, maintenance time is long, defrost ingesting needs labor.), Aluminum coil extraction secondary refrigerant no mechanical equipment, so no noise and high heat exchange efficiency, the temperature curve in the library is stable, because the temperature stable storage items can be long.
