Shell and tube heat exchangers are complex and more expensive than ordinary pressure vessels. Also the strength calculation is more difficult. Part of the design process includes the determination of the amount of tubes to be used in the heat exchanger. The number and length of the tubes create the area thru which the heat is transfered from one process medium to the other. The outside of the shell and tube heat exchanger is mostly a cylindrical form which make the calculation by hand for the amount of tubes difficult. The number of tubes and the dimensions are required to execute the calculation for the tube sheet.
The Tube Sheet Lay-out page facilitates the calculation of the amount of tubes. The calculation can be done for four (4) pitch patterns (how the tubes are laid out) and for ten (10) types of passes (tube compartments).
Below figure gives the legend of the dimensions used in the calculations.
To the tubesheet lay-out page > (this link will generate a PNG image of the tube sheet lay-out)To the tubesheet lay-out page > (this link will generate a SVG image file of the tube sheet lay-out, usefull for SVG enabled browsers only. The scale of objects in the file is 1:2) To the EMbaffle® layout page > (this link will generate a SVG image file of the tube sheet lay-out, usefull for SVG enabled browsers only.) For more information about EMbaffle technology click here.
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