• Ramnaresh R. Prajapati
• Pravin A. Mane
• Seema P. Mane
• Dattatray Gaikwad

Heat exchangers have several industrial and engineering applications. The design procedure of heat exchangers is quite complicated, as it needs exact analysis of heat transfer rate and pressure drop estimations apart from issues such as long-term performance and the economic aspect of the equipment. Whenever inserts are used for the heat transfer enhancement, along with the increase in the heat transfer rate, the pressure drop also increases. This increase in pressure drop increases the pumping cost. Therefore any augmentation device should optimize between the benefits due to the increased heat transfer coefficient and the higher cost involved because of the increased frictional losses. Heat transfer augmentation techniques (passive, active or a combination of passive and active methods) are commonly used in areas such as process industries, heating and cooling in evaporators, thermal power plants, air-conditioning equipment, refrigerators, radiators for space vehicles, automobiles, etc. Passive techniques, where inserts are used in the flow passage to augment the heat transfer rate, are advantageous compared with active techniques, because the insert manufacturing process is simple and these techniques can be easily employed in an existing heat exchanger

Active Technique, Passive Technique, Compound Technique, Heat exchanger

"Review of Recent Techniques of Heat Transfer Enhancement and Validation of Heat Exchanger ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.2, Issue 2, page no.349-361, February-2015, Available :http://www.jetir.org/papers/JETIR1502033.pdf

"Review of Recent Techniques of Heat Transfer Enhancement and Validation of Heat Exchanger ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.2, Issue 2, page no. pp349-361, February-2015, Available at : http://www.jetir.org/papers/JETIR1502033.pdf