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Indian Institute of Technology, Kharagpur

Heat Exchangers: Fundamentals And Design Analysis

Indian Institute of Technology, Kharagpur and NPTEL via Swayam

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Heat exchangers are extensively used in diverse industries covering power generation, refrigeration and air conditioning, cryogenics, oil refineries and chemical processes, automobiles and other transport devices. The performance of a heat exchanger is very important for the conservation of energy, assurance of product quality, process viability and environmental protection. The present course aims at developing a familiarity with various types of heat exchangers, their construction and applications. Conventional methods of heat exchanger analysis; brief design methodology of typical heat exchangers and synthesis of heat exchanger network. It is planned to develop an appreciation and basic expertise in heat exchanger through description, mathematical analysis and numerical examples.INTENDED AUDIENCE : Mechanical Engineering, Chemical Engineering, Energy Engineering, Cryogenics Engineering, Aerospace Engineering etc.PREREQUISITES : Thermodynamics, Fluid Mechanics and Heat Transfer (at a very basic level).INDUSTRY SUPPORT : All the companies generating coal based and nuclear based power (NTPC, different state electricity boards, CPRI, BARC, andNPCL etc.). Companies dealing with the design and fabrication of heat exchangers, auto mobile industries, process industries, oil refineries. Companies dealing with waste heat recovery and renewable. Some specific companies could be BHEL, ALSTOM, HP, HPCL, IOCL, THERMAX, BPCL, GAIL, Reliance, TATA Chemicals etc.


Week 1 : Background, Application, Classification, Common terminologies.
Week 2 : Introduction to Thermal and hydraulic aspects, pressure drop and heat transfer, sizing and rating. F-LMTD and -NTU method.
Week 3 : Tubular Heat Exchangers: different designs, brief description of Shell and Tube Heat Exchangers, Special types.
Week 4 : Compact heat exchangers, enhancement of heat transfer, extended surface or Fin, fundamental of extended surface heat transfer,Fin tube heat exchanger
Week 5 : Plate Fin Heat Exchangers (PFHE), types, construction, fabrication, design, application. Multistream PFHE.
Week 6 : Multistream PFHE continued. Direct contact heat exchangers, types, application, simple analysis.
Week 7 : Regenerators, types of regenerators, construction, application. Theory of Regenerator, -NTU and - method..
Week 8 : Heat pipes, construction, working principle, application, analysis. Special heat pipes.
Week 9 : Microscale Heat Exchangers and heat sinks; heat transfer and fluid flow through narrow conduits, special design considerations
Week 10 : Phase change HEX; phase change heat transfer, introduction to evaporators and condensers.
Week 11 : Phase change HEX; phase change heat transfer, introduction to evaporators and condensers.
Week 12 : Heat Exchanger testing, steady state and dynamic methods.

Taught by

Prof. Prasanta Kumar Das & Prof. Indranil Ghosh


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