Atmospheric Corrosion Simulation of Air Conditioning Heat Exchanger in Service Under Marine Environment

doi:10.16182/j.issn1004731x.joss.21-1330

Abstract

Abstract:

Aiming at the performance degradation of airconditioner heat exchanger caused by serious corrosion under marine environment, an atmospheric corrosion simulation method is studied to analyze and predict the influence on corrosion conditions of marine environment and working condition of air conditioner heat exchanger. From the acquisition of material parameters, the construction the model and the setting of boundary conditions, the atmospheric corrosion simulation process of air conditioner heat exchanger in service under marine environment is systematically introduced, and a method to verify the accuracy of the simulation model by using an artificially accelerated environmental test chamber is provided. From the simulation results, the location and appearance of main corrosion of air conditioner heat exchanger is observed, the relevant corrosion data is obtaining and the main factors causing the corrosion of air conditioner heat exchanger and the related improvement methods are provided.

Key words: air conditioner heat exchanger, marine service environment, atmospheric corrosion simulation, couple corrosion simulation, comsol multiphysics(COMSOL)

CLC Number:

TP391.9

Huang Peng, Jun Wang, Li Qi, Zhidong Wu. Atmospheric Corrosion Simulation of Air Conditioning Heat Exchanger in Service Under Marine Environment[J]. Journal of System Simulation, 2023, 35(4): 899-905.

Figures/Tables 9

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Table 1

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参数	数值
外界大气温度/℃	25
外界大气湿度	0.85
盐沉降量/(mg/m²·d^-1)	50
空调运行平均风速/(m/s)	2
制冷剂进入铜管温度/℃	70
制冷剂进入铜管压力/MPa	1.3

温度点位置	实测平均温度℃/湿度	仿真平均温度℃/湿度
铜管进口处	51.89/0.35	51.88/0.32
1#U型铜管处	34.01/0.67	33.95/0.65
2#U型铜管处	31.58/0.79	30.82/0.78
3#U型铜管处	25.08/0.80	24.67/0.81
铜管出口处	20.75/0.85	20.22/0.86

时间/h	人工加速实验/(g/m²)	仿真结果/(g/m²)
48	1.492	1.536
96	2.136	3.072
240	2.407	7.680
480	2.982	15.360
1 000	3.729	32.000

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