Vipertex® & HTRI®

Vipertex® and HTRI® have developed a design calculator for members' use that allows HTRI® Xchanger Suite software to perform designs utilizing Vipertex® tubes. HTRI® software products are widely recognized as the industry standard for the design, rating, and simulation of heat transfer equipment. Using the Vipertex® design calculator interfaced with the HTRI® software, several manufacturers have been able to calculate a significant reduction in the number of tubes used as well as increased efficiency using Vipertex® tube.

HTRI® members can access the Vipertex® HTRI® Xchanger Suite calculator upon request. The Vipertex® HTRI® calculator is currently available by calling 877.360.9716.

HTRI® Test Data

Vipertex® model 1EHT tubes provide an approximate 600% increase in heat transfer, which is accompanied by only a small increase in the friction factor (Fig 1).

Fig. 1

Vipertex® Model 1EHT - Two Phase Bundle Data - Outside

Vipertex® model 1EHT tubes produce combined overall bundle performance that increases shellside and tubeside heat transfer up to 97%. Enhanced surfaces with cavities on the surface promote nucleate boiling and reduce the required wall superheat for nucleate boiling to occur (Fig 2).

Fig. 2

Tubeside Evaporation Results for Smooth, Vipertex® Model 1EHT and Vipertex® Model 1HB Tubes

Evaporation performance using Vipertex® model 1EHT tubes is approximately 1.4 times the performance of smooth tubes (Fig 3).

Fig. 3

Tubeside Condensation Results for Smooth, Vipertex® Model 1EHT and Vipertex® Model 1HB Tubes

Condensation performance using Vipertex® model 1EHT tubes is twice the performance of smooth tubes (Fig 4).

Fig. 4

Evaporation of R22 and R410a on the Outside of Vipertex® Model 1EHT Tube

Evaporation performance using Vipertex® model 1EHT tubes is up to 4.4 times the performance of smooth tubes (Fig 5).

Fig. 5

For more information, please contact us.