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Depending on the amount of cooling needed, shell and tube heat exchangers can be built in single or double pass configuration. The number of pass refers to the number of times the fluid in the shell passes by the fluid in the tubes. This is achieved by placing baffles in the shell that allow for the fluid to be directed.
The tube fluid circulates inside the tubes, while the shell fluid flows around them, guided by baffles. The movement of the shell fluid, whether it is side-to-side or up-and-down, and the number of passes it makes over the tubes, are controlled by segmental baffles, essential for maximizing heat transfer efficiency. [10]
It is used in some household stoves [1] and in some industrial process vessels (tanks), such as shell and tube heat exchangers, chemical reactors, and static mixers. Baffles are an integral part of the shell and tube heat exchanger design. A baffle is designed to support tube bundles and direct the flow of fluids for maximum efficiency.
A shell and tube heat exchanger Shell and tube heat exchanger. Shell and tube heat exchangers consist of a series of tubes which contain fluid that must be either heated or cooled. A second fluid runs over the tubes that are being heated or cooled so that it can either provide the heat or absorb the heat required.
Shell Rotella is a line of heavy-duty engine lubrication products produced by Shell plc. The line includes engine oils, gear oils and coolants. The line includes engine oils, gear oils and coolants. The oil carries both the American Petroleum Institute (API) diesel "C" rating as well as the API gasoline engine "S" rating.
The oil accumulating at the top is then transferred to waste oil tank on the vessel where it is later discharged to a treatment facility ashore. This type of Oily Water Separator is common in ships, but it has flaws that decrease efficiency. Oil particles that are twenty micrometers or smaller are not separated.
The advance ratio is critical for determining the efficiency of a propeller. At different advance ratios, the propeller may produce more or less thrust. Engineers use this ratio to optimize the design of the propeller and the engine, ensuring that the vehicle operates efficiently at its intended cruising speed, see propeller theory.
Prelude FLNG is a floating liquefied natural gas (FLNG) platform owned by Shell plc and built by the Technip–Samsung Consortium (TSC) in South Korea for a joint venture between Royal Dutch Shell, KOGAS, and Inpex. [3] [4] The hull was launched in December 2013. [5]
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