进行了一项实验研究，以测量在约45华氏度（7.2摄氏度）下运行的冷水机组浸没式蒸发器管内的污垢热阻。污垢阻力测量是在一个特殊设计的12.6英尺长的测试蒸发器中进行的，该蒸发器包含16根管子，与现有的250吨R11制冷机蒸发器并联。测试蒸发器使用的水与流经250吨蒸发器管的水相同。来自250吨蒸发器的制冷剂在测试蒸发器管的外表面上沸腾。收集了两组污垢数据，一组是1990年的冷却季节（5月至10月），另一组是1991年的冷却季节。数据取自一个内部平面和三个内部增强管几何形状。 将每根管子的污垢阻力与每周手动刷两次的同一根管子的污垢阻力进行比较。在第一年，数据是以3.5 fps（1.1 m/s）的流速在正常水质下采集的。在第二年，以3.5 fps（1.1 m/s）和7.0 fps（2.1 m/s）的水流速度采集污水水质数据。介绍并讨论了两年的污垢数据。两个冷却季节的结果表明，蒸发器管中的污垢可以忽略不计。关键词:实验、测量、污垢、摩擦损失、管道、冷却器、蒸发器、R11、冷却季节、测试、比较引用:ASHRAE Trans。1992年，第98卷，第2部分，论文编号3606（RP-560），86-103，图。，11个标签。，参考文献7。，附录

An experimental study was conducted to measure the fouling thermal resistance in the tubes of water-chiller-flooded evaporators operating at approximately 45 deg F (7.2 deg C). The fouling resistance measurements were made in a specially designed 12.6-foot-long test evaporator containing 16 tubes that was connected in parallel with an existing 250-ton R11 chiller evaporator. The test evaporator used the same water that flowed through the tubes of the 250-ton evaporator. Refrigerant from the 250-ton evaporator was boiled on the outer surface of the test evaporator tubes. Two sets of fouling data were taken-one for the 1990 cooling season (May through October) and one for the 1991 cooling season. The data were taken for one internally plain and three internally enhanced tube geometries. The fouling resistance of each tube was compared with that of an identical tube, which was manually brushed twice weekly. During the first year, the data were taken with normal water quality at 3.5 fps (1.1 m/s) water velocity. During the second year, the data were taken with dirty water quality at 3.5 fps (1.1 m/s) and 7.0 fps (2.1 m/s) water velocities. Presents and discusses the two-year fouling data. The results for two cooling seasons show that negligible fouling will occur in the evaporator tubes.KEYWORDS: experiment, measuring, fouling, friction loss, tubes, chillers, evaporators, R11, cooling season, testing, comparing