This paper describes the development of a method that can be used to simulate in a laboratory the effects of air side fouling of condensers from split system air conditioners. The method includes a synthetic fouling agent that realistically mimics field fouling. The fouling agent was developed by considering the fouling materials and effects on heat transfer and air side pressure drop that were measured on a set of condenser coils that had been fouled in situ. The proposed fouling agent matches these effects by combining a fiber component with a particulate component. The particulate component is made from quartz dust that has a particle size distribution based on averages of size distributions in samples collected from condensers in Omaha, NE and Las Vegas, NV. The fouling agent is applied to coils with several different designs, including a range of fin pitches, and plate fin, spine fin, and microchannel configurations. The rates of fouling deposition, as well as the effects of fouling on coil performance, are shown and compared for these coils.

本文介绍了一种方法的开发，该方法可用于在实验室中模拟分体式空调器的冷凝器空气侧结垢的影响。该方法包括实际上模拟现场污垢的合成污垢剂。通过考虑结垢材料以及对传热和空气侧压降的影响来开发结垢剂，这些结垢是在一组就地结垢的冷凝器盘管上测得的。所提出的污垢剂通过将纤维组分与颗粒组分结合而匹配了这些效果。微粒成分由石英粉制成，石英粉的粒径分布基于从内布拉斯加州奥马哈市和内华达州拉斯维加斯的冷凝器收集的样品中粒径分布的平均值。结垢剂可用于具有几种不同设计的线圈，包括一系列鳍间距，板鳍，脊鳍和微通道配置。显示并比较了这些线圈的结垢沉积速率以及结垢对线圈性能的影响。