You may refer to: A. Hernandez-Guerrero, A. Macias-Machin, "How to design bayonet-heat exchangers", Chemical Engineering, 98(4) April 1991, 122-128; reprinted in: G. Sam Samdani (Ed.), "Heat Transfer Technologies and Practices for Effective Energy Management", Chemical Engineering / McGraw-Hill, 1996, pp. 25-29.
You may want to check also: Donald Q. Kern, "Process Heat Transfer", McGraw-Hill, 1965 (or later reprints); sect. 7: "Bayonet exchangers" at Ch. 20 (pp. 738-745 at 22nd printing, 1984, int. student ed.).