Since 1940, Rigidized® Metals Corporation has been the leader of producing engineered metal surfaces and panels. The metal texturing process adds strength, durability and beauty to any project.

Beth Neel

Fouling in a Vipertex® 1EHT Tube

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HEAT TRANSFER IN A VIPERTEX® MODEL 1EHT TUBE AND A SMOOTH STAINLESS STEEL TUBE UNDER FOULING CONDITIONS FOR A FLOWRATE OF 3.79 L/MIN, HOT SIDE TEMPERATURE OF 70 DEG F (21 DEG C) AND COLD SIDE TEMPERATURE OF 40 DEG F (4.4 DEG C)

This figure shows the enhanced performance of the transient heat transfer of the Vipertex® EHT series tubes when compared to a smooth tube under fouling conditions.  It   presents  the slope of the best fit line that describes the fouling in the smooth tube as -0.0183 , compared  to  -0.0094 for the Vipertex® 1EHT series tube; a considerable difference for this short time period.

Vipertex® EHT series of tubes demonstrate a decrease in the rate of fouling compared to smooth tubes (when evaluated for the same set of fouling conditions).

Beth Neel

Development and Evaluation of Vipertex® Enhanced Heat Transfer Tubes for use in Fouling Conditions

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Details of this study have recently been published in Theoretical Foundations of Chemical Engineering, 2012, Vol 46, No 6, pp.627-633.

In general the objective of this study is to model and improve the Vipertex® heat transfer surfaces.  Surface characteristics that make up the Vipertex® EHT series of tubes were evaluated and the fluid interaction that takes place with the process surface analyzed through CFD analysis . Vipertex® was able to create an optimized Vipertex® enhanced heat transfer surface that provides maximum heat transfer while minimizing both the increase of frictional losses and material usage.

Two Vipertex® enhanced tubes were evaluated here and compared to smooth tubes, with flow rate and temperature data being monitored for the duration of the study. Observations and transient measurements of heat transfer tubes that are exposed to untreated lake water were obtained. Measurements include instantaneous and total heat transfer  data. Observations support the conclusion that fouled Vipertube enhanced tubes provide superior thermal performance when compared to fouled smooth tubes for these fouling conditions.

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