Further Discussion on Measurement of Liquid Surface Tension Coefficient by pulling escape method

The author measured surface tension coefficient for liquid with a new experimental apparatus, measured magnetic fluid surface tension coefficient at different temperatures and with different volume of surfactant. By the analysis of experimental data, we obtained that magnetic fluid surface tension coefficient decreases with the increasing temperature and increases with the addition of surfactant volume and reaches a certain stability value. We also obtained the expression of magnetic fluid surface tension coefficient and the temperature or surfactant. This paper discussed the relationship between the liquid surface tension coefficient and the temperature and surfactant from the view of thermodynamics.

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The Design and Implementation of Liquid Surface Tension Coefficient Measurement System Based on Virtual Instrument

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.108-111.921 ◽

2010 ◽

Vol 108-111 ◽

pp. 921-925

Author(s):

Wen Lian Li ◽

Xiang Dong Ren ◽

Jing Jing Zhang ◽

Yang Li

Keyword(s):

Surface Tension ◽

Measurement System ◽

Virtual Instrument ◽

Liquid Surface ◽

Surface Tension Coefficient ◽

Labview Software ◽

Liquid Surface Tension ◽

Data Acquisition Card ◽

Coefficient Measurement ◽

Sensitive Sensor

With Virtual Instrument technology, the authors designed liquid surface tension coefficient measurement system which has realized the computer measurement of the liquid surface tension coefficient by using of computers and data acquisition card and ELVIS and LabVIEW software and combining with the stress-sensitive sensor. Not only measurement speed is faster and more accurate, processing data is more convenient, operating performance is more stable, but also the measurement’s digitization and computerization is realized, and the system has laid a good foundation for processing the data further.

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The Improved Accessory of Joly Balance and Its Effect in Measuring Liquid Surface Tension Coefficient

Instrumentation and Equipments ◽

10.12677/iae.2017.52004 ◽

2017 ◽

Vol 05 (02) ◽

pp. 25-28

Author(s):

召铃吕

Keyword(s):

Surface Tension ◽

Liquid Surface ◽

Surface Tension Coefficient ◽

Liquid Surface Tension

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Trickle/pulse flow regime transition in downflow packed tower involving foaming liquids

Chemical Industry and Chemical Engineering Quarterly ◽

10.2298/ciceq111201011s ◽

2012 ◽

Vol 18 (3) ◽

pp. 349-359

Author(s):

Vijay Sodhi

Keyword(s):

Surface Tension ◽

Liquid Flow ◽

Liquid Surface ◽

Regime Transition ◽

Pulse Flow ◽

Packed Tower ◽

Flow Rates ◽

Transition Boundary ◽

Liquid Surface Tension ◽

Pulsing Flow

The most of past studies in foaming trickle bed reactors aimed at the improvement of efficiency and operational parameters leads to high economic advantages. Conventionally most of the industries rely on frequently used gas continuous flow (GCF) where operational output is satisfactory but not yields efficiently as in pulsing flow (PF) and foaming pulsing flow (FPF). Hydrodynamic characteristics like regime transitions are significantly influenced by foaming nature of liquid as well as gas and liquid flow rates. This study?s aim was to demonstrate experimentally the effects of liquid flow rate, gas flow rates and liquid surface tension on regime transition. These parameters were analyzed for the air-aqueous Sodium Lauryl Sulphate and air-water systems. More than 240 experiments were done to obtain the transition boundary for trickle flow (GCF) to foaming pulsing flow (PF/FPF) by use excessive foaming 15-60 ppm surfactant compositions. The trickle to pulse flow transition appeared at lower gas and liquid flow rates with decrease in liquid surface tension. All experimental data had been collected and drawn in the form of four different transitional plots which are compared and drawn by using flow coordinates proposed by different researchers. A prominent decrease in dynamic liquid saturation was observed especially during regime transitional change. The reactor two phase pressure evident a sharp rise to verify the regime transition shift from GCF to PF/FPF. Present study reveals, the regime transition boundary significantly influenced by any change in hydrodynamic as well as physiochemical properties including surface tension.

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