Rules of Thumb for Chemical Engineers: A Manual of Quick, Accurate Solutions to Everyday Process Engineering Problems, Fourth Edition

By Carl R. Branan (ed)

Chapter 2: Heat Exchangers

TEMA

Nomenclature

Shell and tube heat exchangers are designated by front head type, shell type, and rear head type as shown in Figures 1-4 and Table 1 from the Standards of Tubular Exchanger Manufacturers Association (TEMA).

Table 1: Typical Heat Exchanger Parts and Connections
Stationary Head Channel Stationary Head Bonnet Stationary Head Flange Channel or Bonnet Channel Cover Stationary Head Nozzle Stationary Tubesheet Tubes Shell Shell Cover Shell Flange Stationary Head End Shell Flange Rear Head End Shell Nozzle Shell Cover Flange Expansion Joint Floating Tubesheet Floating Head Cover Floating Head Flange Floating Head Backing Device Split Shear Ring Slip-on Backing Flange Floating Head Cover External Floating Tubesheet Skirt Packing Box Flange Packing Packing Follower Ring Lantern Ring Tie Rods and Spacers Transverse Baffles or Support Plates Impingement Baffle Longitudinal Baffle Pass Partition Vent Connection Drain Connection Instrument Connection Support Saddle Lifting Lug Support Bracket Weir Liquid Level Connection

Figure 1: Heat exchangers.

Figure 2: Type AES.

Figure 3: Types BEM, AEP, CFU.

Figure 4: Types AKT and AJW.

Classes

Table 2 compares TEMA classes R, C, and B.

Table 2: ^[*]TEMA Standards 1978 Comparison of Classes R, C, & B
Paragraph	Topic	R	C	B
1.12	Definition	for the generally severe requirements of petroleum and related processing applications.	for the generally moderate requirements of commercial and general process applications.	for general process service.
1.51	Corrosion allowance on carbon steel	? inch	inch	inch
2.2	Tube diameters	, 1, 1 , 1 , and 2 inch od	R + , ?, , and ?

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Rules of Thumb for Chemical Engineers: A Manual of Quick, Accurate Solutions to Everyday Process Engineering Problems, Fourth Edition

TABLE OF CONTENTS

Chapter 2: Heat Exchangers

TEMA

Nomenclature

Classes

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