Heat Transfer & Thermal Machines | Heat Exchanger Design by Pavan | Learn Smarter
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Heat Exchanger Design

Heat exchangers play a critical role in transferring heat between fluids at varying temperatures without mixing them, and they are essential in various industries like power plants and HVAC systems. The chapter covers different classifications of heat exchangers based on flow configuration, construction, and heat transfer mechanisms. Key methods for analyzing and designing heat exchangers, such as the LMTD method and Effectiveness-NTU method, are described along with selection criteria such as thermal performance, pressure drop limits, and maintenance considerations.

Sections

  • 1

    Function Of Heat Exchangers

    Heat exchangers transfer heat between two or more fluids without mixing, playing a crucial role in various industries.

    Learning Practice

  • 2

    Classification Of Heat Exchangers

    This section covers the classification of heat exchangers based on their flow configuration, construction, and heat transfer mechanisms.

    Learning Practice

  • 2.1

    Based On Flow Configuration

    This section discusses the classification of heat exchangers based on flow configuration, highlighting the three main types: parallel flow, counter flow, and cross flow.

    Learning Practice

  • 2.2

    Based On Construction

    This section focuses on the classification of heat exchangers based on their construction and highlights different types.

    Learning Practice

  • 2.3

    Based On Heat Transfer Mechanism

    This section explores the mechanisms of heat transfer in heat exchangers, focusing on direct and indirect contact methods.

    Learning Practice

  • 3

    Mean Temperature Difference

    Mean Temperature Difference (MTD) is a crucial calculation used for estimating heat transfer rates in heat exchangers when fluid temperatures change along the device.

    Learning Practice

  • 3.1

    Log Mean Temperature Difference (Lmtd)

    The Log Mean Temperature Difference (LMTD) is a crucial calculation used in heat exchanger design to determine the average temperature gradient for heat transfer rate calculations.

    Learning Practice

  • 4

    Heat Exchanger Effectiveness

    Heat exchanger effectiveness quantifies how well a heat exchanger performs compared to its maximum potential.

    Learning Practice

  • 5

    Analysis And Design Of Heat Exchangers

    This section covers the critical aspects of heat exchanger design, detailing their functions, classifications, and methods for analysis and design.

    Learning Practice

  • 5.1

    Lmtd Method

    The LMTD Method is crucial for calculating heat transfer rates in heat exchangers when inlet and outlet temperatures are known.

    Learning Practice

  • 5.2

    Effectiveness-Ntu Method

    The Effectiveness-NTU method is a crucial approach for analyzing heat exchanger performance, particularly when outlet temperatures are unknown.

    Learning Practice

  • 6

    Selection Criteria

    This section outlines the key criteria for selecting heat exchangers, including thermal performance and space constraints.

    Learning Practice

References

Module V_ Heat Exchanger Design.pdf

Class Notes

Memorization

What we have learnt

  • Heat exchangers transfer he...
  • Different types of heat exc...
  • The effectiveness of heat e...

Final Test

Revision Tests