Shell and Tube Heat Exchangers Design, Operation, Control

• The Heat Exchanger terminology its significance.

• Functions and applications of heat exchangers

• Basic principles of heat transfer and their application to design of heat exchangers,

• Overall heat transfer coefficients

• Specific considerations applicable to condensers, evaporators etc.

• The participants would also gain understanding of design thumb rules,

• Overview of TEMA code,-Mechanical Design

• Understanding ASME Sec.VIII – UHX Rules

• Fouling effect, prediction and techniques of control

• Heat Exchanger performance

• Operation and Control aspects

• Maintenance and troubleshooting

Part 1 – Introduction Classification based on application, terminology and applications (typical)

• Classification based on construction

• Fundamentals of Heat transfer

• Concept of LMTD, Overall HT co-efficient, fouling factor

• TEMA Classification and TEMA types

• Design of shell and tube exchanger – sizing, pressure drop, considerations for fluid allocation (shell side/tube side), no. of passes. Baffle spacing

• Use of both Kern Method and Bell (Delaware) Method would be highlighted

Part 2 – Mechanical design and design optimization techniques.(TEMA and UHX)

• Mechanical Design of Shell and Tube Heat Exchangers

• Selection of Tubes

• Design of Shell

• Baffles and Support Plates

• Design of Tube Sheet – General Requirements

• Tube Sheet Bending and shear Formula

• TTS Joints – Expanded and Welded

• Design of Nozzles

• Pass-partition plates, End Flanges and Bolting

• Mechanical design of components – tube sheet, baffles, bonnet/shell cover

Part 3 – Identifying the common factors affecting thermal performance.

• Problems with Thermal aspects; overall mean temperature difference, effective heat transfer coefficients, required heat transfer area, sizes and number of tubes.

• Problems with Hydrodynamics aspects; pressure drops, pumping power,

• Investigate the parameters that affect heat transfer coefficients

• Effects of fouling. and remedial measures.

• Show ways to avoid vibration and velocity related problems

Part 4 – Operations and control:

• Malfunctioning – typical causes and remedial measures

• Process control of heat exchangers

• Maintenance of Heat -exchangers