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Abstract

A method is proposed for dealing with large rectangular and circular tubeplates, in which edge loading and deflection is absorbed by a bellows or a diaphragm. The simple design procedure is based on curves derived from a theory which considers a strip at the edge of the tubeplate. Specimen curves and a recommended design procedure are included.

Reference is made to the ratios known as deflection and ligament efficiencies and results of tests are given which suggest that the values of these are in fact lower than those in general use. In an example it is shown that a significant saving can result by the use of a diaphragm in place of the more conventional bellows. Finally a description is given of a test rig, designed to check the values of stress and deflection in a given system of loading.

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References

British Standard 1500: 1958 ‘Fusion welded pressure vessels for use in the chemical petroleum and allied industries. Part 1. Carbon and low alloy steels’.

Gardner

K. A.

‘Heat exchanger tube-sheet design’, J. appl. Mech. 1948 15, 377.

Miller

K. A. G.

‘The design of tubeplates in heat exchangers’, Proc. Instn mech. Engrs, Lond. 1952–53 1B, 215.

Timoshenko

S. P.

Strength of materials Part 2 third edition 1956 (D. Van Nostrand, Princeton, N.J., and Macmillan, London).

Duncan

J. P.

‘The structural efficiency of tubeplates for heat exchangers’, Proc. Instn mech. Engrs, Lond. 1955 169, 789.

British Standard 3274:1960 ‘Specification for tubular heat exchangers for general purposes’.

Roark

R. J.

Formulas for stress and strain third edition 1954 (McGraw-Hill Book Co.).

Design of Rectangular Tubeplates for Large Heat Exchangers

Abstract

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References