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 In design of compact heat exchangers, passive techniques of heat transfer augmentation can play an important role if a proper passive insert configuration can be selected according to the heat exchanger working condition (both flow and heat transfer conditions) In the past decade, several studies on the passive techniques of heat transfer augmentation have been reported The present paper is a review on progress with the passi

Review of passive heat transfer augmentation techniques

S.K. Agarwal

Papers

Heat transfer augmentation for the flow of a viscous liquid in circular tubes using twisted tape inserts