Numerical Simulation of the Influence of Elliptical Tube Heat Exchanger in Indoor Unit of Air Conditioner on its Acoustic Field

Numerical Simulation of the Influence of Elliptical Tube Heat Exchanger in Indoor Unit of Air Conditioner on its Acoustic Field

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Elliptical tube heat exchanger has been widely used in heat exchange equipment due to its good flow and heat transfer characteristics.In this paper we use computational fluid GERANIUM OIL dynamics method to simulate the flow field and sound field generated by the indoor unit of air conditioner with elliptical finned tube heat exchanger , and make comparison with circular tube heat exchanger.The results show that for the inside the cross-flow, the structure of tubes in heat exchangers has no effect on the location and size of the eccentric vortex; compared with the circular tube finned heat exchanger with the same cross-sectional area, the air conditioners using elliptical tubes work better on increasing the air volume, improving cooling effect and reducing noise especially low-frequency noise under the same conditions.Above all, the conditioner using elliptical tubes in which the ratio of the long axis Leggings and short axis is 2.

0 can reduce noise 4 dB.