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Heat-r Rate-r Engineering Software

Process Engineering Support - Furnace Engineering Services for design, performance evaluations and equipment ratings

Heat-r-Rate-r software was developed to provide furnace engineering services for thermal and mechanical design, rating and performance evaluation in convection section coil heat transfer applications for the Chemical Process Industry.  The program can simulate the performance of existing convection preheat coils, "as-is" as well as develop new designs, determining flue gas and process fluid pressure drop, heat transfer and maximum tube wall temperature rigorously, calculating row by row for given inlet conditions. Individual coil construction may be complex in design including mixing bare and finned surfaces together and variable fin densities and height.  The program has all standard materials for all thermo-mechanical design and rating verification. The furnace engineering services support with Heat-r-Rate-r software predicts the performance of complete convection section preheat systems, determining the operation of individual coils in a system as they interact with all others.  Once a furnace and convection section has been modeled, alternatives can be explored for achieving maximized benefits.  One or more coils within a system can be replaced or modified and revised predictions can be quickly developed for the entire convection section preheat system, to demonstrate the performance improvement.  The software incorporates rigorous fuel combustion calculations to develop flue gas composition and flow and adiabatic flame temperature required for heat transfer predictions. Chem-Engineering Services furnace engineering services developed through Heat-r-Rate-r software simulations are well suited for designing replacement furnace coils and making major equipment upgrades, such as installing a combustion air preheater, or resizing limiting components for improving plant capacity or efficiency.

High Temperature Natural Gas Preheat Coil Example A natural gas stream is heated from 344 Deg F to 748 Deg F at 600 Psia in a 9 pass, 3 row, finned coil with 902 Deg F flue gas.  The details of the coil calculations are presented in the figures below.  Click on the figure to bring up a new window.  Then, click on the table presented to display an expand button in the lower right of the window.  Click on this button to present a larger view of the calculations, where you can scroll the window to see the detailed calculation results.

For assistance and process engineering support and furnace engineering services to evaluate your plant site's existing furnace equipment, furnish new designs, and to optimize your plant energy use, contact Chem-Engineering Services at:

Chem-Engineering Services

E-Mail:

1500 Glenmar Avenue Monroe, Louisiana 71201 USA Tel 318-387-5791 Fax 318-387-5791 (Autosensing)