方案摘要
方案下载应用领域 | 能源/新能源 |
检测样本 | 其他 |
检测项目 | |
参考标准 | 暂无 |
采用美国Artium公司的PDI-300型相位多普勒粒子干涉仪,用AIMS软件测量除污过程中喷雾性能的实际状况并于CFD模拟的结果进行对比分析。
Heat exchangers are widely used in heating, air conditioning, refrigeration, industrial plants and refineries, gas pro-cessing and water treatment. Fouling is a chronic operating and design problem for retaining highly effective heat exchangers. This leads to countless chemical and mechanical attempts for reducing fouling. Mitigation of fouling and removal of deposits can be addressed efficiently with proper design and gas conditioning modification. All previous mentioned factors and uncertainties can be examined, evaluated and optimized by using computational fluid dynamics (CFD) simulation.
Typical defouling and cleaning process involves chemical solvent sprayed on the heat exchanger surfaces. Manufacturers and operators are facing increasing difficulty to preserve heat exchanger efficiency due to complex structures. Spray behavior and performance cannot be simply predicted due to the many variables involved such as nozzle characteristics, geometry, orientation, gas flow of heat exchanger and pressure resistance. There are tremendous challenges associated with fouling of heat exchangers, where CFD is known as a common tool to predict and resolve those problems. In this work, we will compare the performance of CFD simulation of spray with practical droplet test data in a scaled heat exchanger built and tested in Spraying Systems Co. spray laboratory for a pilot anti-fouling imitation. The spray characteristics based CFD will be used to validate the importance of reasonable and precise spray input simulation in a solvent based defouling process.
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