GU Xin, LUO Yuankun, XIONG Xiaochao, et al. Influence of twisty flow heat exchanger's structural parameters on flow field and temperature field[J]. CIESC Journal, 2018, (8): 3390-3397.
GU Xin, LUO Yuankun, XIONG Xiaochao, et al. Influence of twisty flow heat exchanger's structural parameters on flow field and temperature field[J]. CIESC Journal, 2018, (8): 3390-3397.DOI: 10.11949/j.issn.0438-1157.20171612.
Periodic whole cross-section computation models of twisty flow heat exchanger and segmental baffle heat exchanger are established respectively. The heat transfer coefficient
flow resistance and thermal performance are studied with CFD simulation. The influence of inclination angle of trapezoidal baffles
baffles width
baffles pitch and number of baffles on the heat transfer performance in the twisty flow heat exchanger was studied. The results showed that the inclination angle of trapezoidal baffles and baffles pitch have a significant effect on heat transfer performance
the effect of baffles width is secondary
and the number of baffles have no significant effect. When the thermal performance factor TEF of twisty flow heat exchanger reaches the best
compared to segmental baffle heat exchanger
the pressure drop decrease by 42.5% to 46.9%
the TEF is improved by 7.2% to 14.1%. The results of this paper provide a new scheme of the shell and tube heat exchanger for structure optimization and heat transfer enhancement.