Answer: Air-cooled condensers do not require cooling water and are suitable for use in areas with difficult water supply or in mobile applications. However, its heat transfer effect is worse than that of water-cooled condensers. When used in high temperature or poorly ventilated environments, the condensation pressure is not easy to drop; when used in dusty environments (such as cement plants, flour mills, textile mills, etc.), dust and dirt are easily accumulated on the condenser surface, affecting heat transfer, so it is generally only suitable for medium and small cold dryers.