Numerical study of heat transfer in heat exchanger with nano fluids

Farshid Marzban¹ Mehrzad Ahmadi² Seyed Ali Agha Mirjalili³

1) Master of Mechanical engineering- Azad Islamic University of Yazd - Iran
2) Master of Mechanical engineering- Azad Islamic University of Yazd - Iran
3) PhD of Mechanical engineering- Azad Islamic University of Yazd - Iran

IOI Code : XYEH-BAKKF
Publication : The 2nd International Conference on Engineering Sciences and Technology(2icoesat.com)
Abstract :
    Analys conduct heat transfer coefficient of particles in nano and dispersed scale in base fluid with laminar flow regime is important phenomena in heat exchangers , especially In horizontal tubes . Increasing of hear transfer coefficient of nanofluids is far beyond the presumed ideas which is expected from common relations . It semms that a number of specific factors in mixed of nanofluids are changing the heat transfer mechanisms , especially for specific liquids at high temperature of walls . Results denotes that modification in condition of heat transfer can be done by changing the original fluids , nanofluids resources and loading of nanoparticles . Here the nanofluids are explained first , and then described different type of heat exchangers , afterward focused on heat transfer by nanofluids , and finally studied the importance and roles of nanofluids in exchangers and analysed heat transfer in tube-shell heat exchanger by using dispersed nanoparticles in fluids with ANSYS software . During the period of using of nanofluids in water an 5 centigrad tempratire difference between the inket and the outlet has occured .

Keywords : heat transfer nanofluids shell tube heat exchangers numerical solution