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In chemical engineering, a jacketed vessel is a container that is designed for controlling the temperature of its contents, by using a cooling or heating "jacket" around the vessel through which a cooling or heating fluid is circulated.
A jacket is a cavity external to the vessel that permits the uniform exchange of heat between the fluid circulating in it and the walls of the vessel. There are several types of jackets, depending on the design:
Conventional Jackets. A second shell is installed over a portion of the vessel, creating an annular space within which cooling or heating medium flows....