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A thermosiphon (or thermosyphon) is a device that employs a method of passive heat exchange based on natural convection, which circulates a fluid without the necessity of a mechanical pump. Thermosiphoning is used for circulation of liquids and volatile gases in heating and cooling applications such as heat pumps, water heaters, boilers and ...
There is a retaining wall or overflow weir separating the tube bundle from the reboiler section where the residual reboiled liquid (called the bottoms product) is withdrawn, so that the tube bundle is kept covered with liquid and reduce the amount of low-boiling compounds in the bottoms product. Image 2: Typical horizontal thermosyphon reboiler
The concept of a self-circulating thermic syphon began with stationary boilers and relatively simple Galloway tubes.They reached their peak in steam locomotive boilers, where the complexity of a syphon was justified by the need for a compact and lightweight means of increasing boiler capacity.
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Natural Circulation Boiler in construction. In a natural circulation boiler the circulation is achieved by the difference in density when the water in the boiler is heated. In natural circulation steam boilers the circulation of water is by convection currents, which are set up during the heating of water.
Comparison between Natural Circulation and Forced Circulation. A forced circulation boiler is a boiler where a pump is used to circulate water inside the boiler. This differs from a natural circulation boiler which relies on current density to circulate water inside the boiler.
A thermosyphon reboiler; A shell and tube heat exchanger; See also. Calandra (disambiguation) Calandrinia This page was last edited on 15 ...
forced-circulation boiler: boilers where circulation is forced by a pump, rather than relying on thermosyphon effect. These may use either forced-water-circulation (e.g. La Mont) or forced-steam-circulation (e.g. Löffler). [25] Foster-Wheeler boiler. D type; controlled-superheat type; ESD type (External Superheat, D type) Franco-Crosti boiler: