With prime focus on quality, we are engaged in manufacturing and supplying the best range of Jacketed Vessels.† These vessels are specifically engineered for processing the materials at a desired controlled temperature. This vessel operates by cooling or heating the jacket around the vessel. We are offering these Jacketed Vessels to clients in a wide range of specifications and configurations to meet their diverse needs.†
INTRODUCTIONJacketed 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. A simple conventional jacket, with no internal components, is generally very inefficient for heat transfer because the flow media has an extremely low velocity resulting in a low heat transfer coefficient. Condensing media, such as steam or Dowtherm A, is an exception because in this case the heat transfer coefficient doesn't depend on velocity or turbulence, but instead is related to the surface area upon which the media condenses and the efficiency of removing condensate. Internals include baffles that direct flow in a spiral pattern around the jacket, and agitating nozzles that cause high turbulence at the point where the fluid is introduced into the jacket.
¬∑†††††††† Half-Pipe Coil Jackets. Pipes are split lengthwise, usually with an included angle of 180 degrees (split evenly down the middle) or 120 degrees, then wound around the vessel and welded in place.
¬∑†††††††† Dimple Jackets. A thin external shell is affixed to the vessel shell with spot welds located in a regular pattern, often about 50 mm on center both horizontally and vertically. These so-called dimples impart turbulence to the heating or cooling media as it flows through the jacket.
¬∑†††††††† Plate Coils. Often very similar to dimple jackets, but fabricated separately as fully contained jackets that are then strapped to a vessel. They are slightly less efficient than dimple jackets because there is a double layer of metal for the heat to traverse (the plate coil inside surface and the vessel shell). They also require good bonding to the vessel jacket, to prevent an insulating gap between the plate coil and the vessel.