HTRI R-trend

HTRI R-trend calculates and trends the fouling resistance for shell-and-tube heat exchangers in single-phase service. This Microsoft® Excel® spreadsheet contains an interface to Xist.

R-trend

Graphing options versus time are available for any two input and/or output parameters.

Required Inputs Process Data 5 of the following 6 parameters:
  • Cold fluid inlet temperature
  • Cold fluid outlet temperature
  • Hot fluid inlet temperature
  • Hot fluid outlet temperature
  • Cold fluid flow rate
  • Hot fluid flow rate
Heat Exchanger Geometry With Xist

*.htri file with geometry specified

Without Xist
  • Heat transfer area
  • Number of tubepasses
Fluid Properties With Xist

*.htri file with hot and cold fluid properties specified

Without Xist
  • Specific heat of hot and cold fluids
  • Clean U
Calculated Outputs
  • Duty
  • Heat balance
  • Effective mean temperature difference
  • Service U and clean U
  • Fouling resistance and fouling Biot number (non-dimensional fouling number)
  • Wall temperature (optional)
  • Shear stress (optional)

Request R-trend today! Be sure to include your full name, company affiliation, address, and phone number in your request.