A Graham condenser typically consists of a glass tube that is surrounded by a water jacket. The vapor to be condensed enters the top of the condenser and flows through the inner tube or coil. The water flowing through the jacket cools the vapor, causing it to condense and collect at the bottom of the condenser. Graham condensers may have different shapes, such as spiral or coiled shapes, and can be made of different materials. They are commonly used in distillation applications to cool and condense the vapor produced during the distillation process.
A coiled condenser consists of a long, coiled glass or metal tube, typically surrounded by a water jacket. The vapor to be condensed enters the outer jacket of the condenser and is cooled by the cold water flowing through the inside of the coil. The cooled vapor then condenses and collects at the bottom of the condenser. Coiled condensers are commonly used in reflux applications to cool and condense the vapor during the reflux process.
To summarize, the main difference between Graham and coiled condensers is their shape and application. Graham condensers are typically glass tubes with an outer jacket that is cooled by water and an inner tube or coil through which the vapor passes, and are commonly used in distillation applications. Coiled condensers are long, coiled tubes that are commonly used in reflux applications.