| Abstrakt: |
Heat transfer scientists are all the time looking for innovative ways toward boosting an effectiveness of energy devices via heat transfer advancement. Because of its thermal performance, excellent hydrodynamic performance, low fouling thermal resistance, and good recompense in helically coiled tubes, heat exchangers have been used in the agricultural, refrigerators, metallurgical, medicinal, biochemical, electric, textiles, and petrochemical sectors. Moreover, the system has disadvantages such as low or dead flow zones around the baffles where corrosion and fouling can occur, ineffective use of shell side pressure drop, and flow induced tube vibration due to which mechanical damage can occur. Twisted tubes are employed for increase heat transfer coefficient on the heat exchangers, which aids in heat exchanger size reduction. Furthermore, nanofluids have piqued concentration of multidisciplinary researchers owing to its unique thermo-physical features and several potential benefits in heat exchanger systems. This work discusses and summarizes nanofluid synthesis, heat transfer increase employing nanofluids in heat exchanger uses, and different twisted tube heat exchangers. Furthermore, a few limitations and problems are addressed, and future research directions are described. [ABSTRACT FROM AUTHOR] |
