Simulation study on noise reduction effect of porous material on electronic expansion valve

Kong, Fanchen; Zhao, Hongbin; Xu, Qiao; Li, Dongdong; Chen, Zhuang; Dong, Xiaofei

doi:10.1016/j.ijrefrig.2023.02.018

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Cited by 3 publications

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Acoustic mechanism and noise reduction optimization of globe valve in air conditioning system

Wang,

Zhuang

et al. 2024

Journal of Building Engineering

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Acoustic mechanism and noise reduction optimization of globe valve in air conditioning system

Wang,

Zhuang

et al. 2024

Journal of Building Engineering

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Investigation on the noise induced by gas–liquid two-phase flow in a capillary tube

2023

Physics of Fluids

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In order to research the noise generated by gas–liquid two-phase flow within capillary tubes in refrigeration systems, this study employs a numerical simulation method based on the volume of fluid model and evaporation-condensation model. The noise of gas–liquid two-phase flows is generated by refrigerant vaporization in capillary tubes under different inlet temperatures and diameters. The results of this study showed that two-phase flow noise in capillary tubes predominantly exists in the frequency range of 0–200 Hz, corresponding to low-frequency noise. Under different inlet temperature and diameter conditions, the total sound pressure level (TSPL) of a two-phase flow noise increased with the increase in the capillary tube diameter. Moreover, when the inlet temperature was 316.6 K, as the diameter increased from 1 to 1.9 mm, TSPL increased from 32.02 to 34.36 dB. In addition, as the inlet temperature gradually decreased, TSPL increased. Furthermore, it was found that the lower the inlet temperature, the greater the increase in TSPL. When the inlet temperatures were 316.6, 313.6, 310.6, and 307.6 K, and the diameter increased from 1 to 1.9 mm, TSPL increased by 2.34, 3.41, 4.1, and 5.38 dB, respectively, corresponding to the relative increase of 7.31%, 10.23%, 11.85%, and 15.34%. Finally, using an orthogonal analysis, a criterion relationship was obtained for predicting the TSPL of gas–liquid two-phase flow noises in capillary tubes under different conditions. This study provides guidance for noise control and structural optimization of capillary tubes considering the gas–liquid two-phase flow.

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Experiment and Numerical Investigation of Flow-Induced Noise Reduction in the Cut-Off Throttle Valves

ZHANG,

Wang,

Xuan

et al. 2024

Preprint

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Simulation study on noise reduction effect of porous material on electronic expansion valve

Cited by 3 publications

References 10 publications

Acoustic mechanism and noise reduction optimization of globe valve in air conditioning system

Acoustic mechanism and noise reduction optimization of globe valve in air conditioning system

Investigation on the noise induced by gas–liquid two-phase flow in a capillary tube

Experiment and Numerical Investigation of Flow-Induced Noise Reduction in the Cut-Off Throttle Valves

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