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"The other main type of baffle is the disc and donut baffle which consists of two concentric baffles, the outer wider baffle looks like a donut, whilst the inner baffle is shaped as a disk. This type of baffle forces the fluid to pass around each side of the disk then through the donut baffle generating a different type of fluid flow."

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"Radial Flow Heat Exchangers

The principal behind the radial flow heat exchangers is the use of disc and dount baffles. The dount baffle forces the gas to flow from the outside to the inside and through the hole in the middle of the baffle while the disc baffle does the opposite. Placing the tubes within the overlapping area of the disc and donut baffles means the all the gas flow will be essentially across the tubes only. The disc and donut baffles are symmetrical around their centres so it does not matter where the gas enters or exits the shell side of the heat exchanger."

"Для повышения скорости теплоносителя в межтрубном пространстве устанавливается комбинация чередующихся кольцевых и дисковых перегородок"