https://www.rigidized.com/wp-content/uploads/Rigidized-Logo@2x.png 0 0 Beth Neel https://www.rigidized.com/wp-content/uploads/Rigidized-Logo@2x.png Beth Neel2012-12-09 08:36:082020-01-09 08:38:21Development and Evaluation of Vipertex® Enhanced Heat Transfer Tubes for Use in Fouling Conditions
https://www.rigidized.com/wp-content/uploads/Rigidized-Logo@2x.png 0 0 Beth Neel https://www.rigidized.com/wp-content/uploads/Rigidized-Logo@2x.png Beth Neel2012-11-29 08:30:502020-01-09 08:36:02Fouling in a Vipertex® 1EHT Tube
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).
https://www.rigidized.com/wp-content/uploads/Rigidized-Logo@2x.png 0 0 Beth Neel https://www.rigidized.com/wp-content/uploads/Rigidized-Logo@2x.png Beth Neel2012-11-06 08:28:542020-01-09 08:30:42Development and Evaluation of Vipertex® Enhanced Heat Transfer Tubes for use in Fouling Conditions
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 analyzedhrough 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.