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Heat Exchanger Duty Calculator

Calculate thermal duty using Q = m × Cp × ΔT. Supports common oilfield and process fluids with preset specific heat values.

Input Parameters

Fluid Type

Specific Heat, Cp (BTU/lb-°F)

Mass Flow Rate (lb/hr)

Inlet Temperature (°F)

Outlet Temperature (°F)

Results

Duty (BTU/hr)

Duty (kW)

Duty (MMBTU/hr)

ΔT (°F)

Formula

Q = m × Cp × ΔT, where Q is heat duty (BTU/hr), m is mass flow rate (lb/hr), Cp is specific heat capacity (BTU/lb-°F), and ΔT is the temperature difference between inlet and outlet (°F). Common in oilfield process facility design for production heaters, line heaters, and glycol reboilers.