🧪 TEMA Fouling Resistance (0.0005 to 0.0020 hr-ft²-°F/BTU), Over-Surface Margin %

Heat Exchanger Fouling Factor & Derate Calculator

Model thermal degradation and required surface area over-design due to mineral scaling, biological slime, and particulate fouling under TEMA standards: calculate clean vs fouled overall heat transfer coefficient (U_fouled = 1 / [1/U_clean + R_f]), required percentage over-surface margin (15% to 35%), and chemical cleaning service profits.

1. Project & Operating Inputs

Heat Exchangers Serviced (Exchanger Count e.g. 8 Process Exchangers)

TEMA Fouling Resistance (Rf e.g. 0.0010 hr-sqft-°F/BTU River Water)

Customer Bid Price for Annual Chemical Clean-In-Place ($ / Exchanger)

Sulfamic Acid Descaler, Recirculation Skid, Neutralizer & Techs ($ / Unit)

2. Financial Breakdown & Yield

TEMA FOULING FACTOR (Rf) DERATE

Annual Exchanger PM Contract Profit

Heat Exchanger Cleaning Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost