Reduction in the surface tension of water due to physical water treatment for fouling control in heat exchangers

✍ Scribed by Young I. Cho; Sung-Hyuk Lee

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 460 KB
• Volume: 32
• Category: Article
• ISSN: 0735-1933
• DOI: 10.1016/j.icheatmasstransfer.2004.03.019

✦ Synopsis

The purpose of the present study was to investigate whether or not a physical water treatment (PWT) reduced the surface tension of hard water. Two different PWT devices were used: a permanent magnet-Drexel University (PMDU) and a solenoid coil electronic device (SCED). The effects of the treatment number of the PWT on the surface tension were studied. Two separate experiments were conducted: one was the measurement of surface tension, and the other was a flow-visualization of dye behavior in water samples. As the number of treatments of the PWT increased, the surface tension of the sample water decreased, a phenomenon that was consistent with the results in the dye flow-visualization experiment.