Heat Exchanger DesignHeat Exchanger Design

Dr. Sarit Kumar DasDr. Sarit Kumar DasDepartment of Mechanical Department of Mechanical

EngineeringEngineering Indian Institute of Technology Indian Institute of Technology

MadrasMadras

Classification of Heat ExchangersClassification of Heat Exchangers

Transfer processesTransfer processes

Degree of surface compactnessDegree of surface compactness

Flow arrangementFlow arrangement

Construction featuresConstruction features

Number of fluidsNumber of fluids

Heat transfer mechanismHeat transfer mechanism

CurriculumCurriculum

1.1. Classification and selection of HXClassification and selection of HX2.2. Basic HX theory and foulingBasic HX theory and fouling3.3. Shell and tube HXShell and tube HX4.4. Double pipe HXDouble pipe HX5.5. Plate HXPlate HX6.6. Compact recuperative HXCompact recuperative HX7.7. Evaporators Evaporators 8.8. CondensersCondensers9.9. HX networkHX network10.10. Cooling towersCooling towers

BooksBooks

Compact Heat Exchangers – Compact Heat Exchangers – Kays and LondonKays and London

Process Heat TransferProcess Heat Transfer –– Hewitt, Shires and Hewitt, Shires and BottBott

Process Heat Transfer Process Heat Transfer – – KernKern

Heat Exchangers Heat Exchangers – – H. MartinH. Martin

HEDH HEDH – – Hemisphere Publication Hemisphere Publication

Classification According to Transfer Process

Direct Contact

Spray Condensers cooling tower Direct transfer Storage type Fluidized Bed

Indirect Contact

Classification According to Surface Compactness

Tabular Plate Extended Surface Regenerative

Double pipe

Shell & tube

Spiral &

Tube

Plate & Frame

Spiral Lamella Plate Fin Tube Fin Rotary Fixed bed

Plate Baffle Rod Baffle Single pass Multi PassOrdinary Heat Pipe Disc

TypeDrum Type

Plate Heat ExchangerPlate Heat Exchanger

Flow Principle of a Plate Heat Exchanger

Plate Fin Heat Exchangers (a) Unmixed-unmixed (b) unmixed-mixed (c) mixed-mixed

A Plate Fin Exchanger

Finned Tubes for Heat Exchangers

Combination of Cross Flow Leading to Overall Counter Flow

Valve Arrangement for Two Stationary Cyclic Regenerator

A Typical Rotary Regenerator

Classification According To Heat Transfer Mechanisms

Single-Phase Convection on Both

Sides

Single-Phase Convection on One-Side, Two-Phase Convection on the Other Side

Two-Phase

Convection On Both

Sides

Combined Convection And Radiative Heat

Transfer

Classification According to Flow Arrangements

Single-Pass

Multi pass

Cross flowCounter flow

Parallel flow Split flow

Divided flow

Plate Extended Plate

Mixed-mixed

Mixed-unmixed

Unmixed-unmixed

U-type Z-type Spiral

Shell and Tube

Plate

Overall parallel flow

Overall counter flow

Split flow

Divided flow

Equal passes

Unequal passes