Marine Cooling Water & Heat Exchanger Tool
Central Cooling • Heat Load • Freshwater & Seawater Flow • LMTD • UA • Fouling • Cooler Capacity • Pump Power • Warm-Sea Margin
Marine Cooling Water & Heat Exchanger Tool
Screen a marine central cooler from the heat load all the way to seawater flow, plate area, fouling reserve and pump demand. Simple mode sizes the duty and checks installed area. Advanced combines equipment heat loads with multiple cooler units, availability, clean U-value, fouling resistance, seawater-flow capacity, pressure drop and warm-sea sensitivity.
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Need multiple coolers, fouling resistance, pressure drop and warm-sea sensitivity? Click Advanced above.The result visuals are stacked full-width so temperature labels and thermal margins stay readable.Heat dutyQ = ṁcpΔT
ExchangerLMTD / UA / area
FlowsFW & seawater demand
Cooling Duty
kW to reject.
°C.
°C.
°C.
°C.
W/m²K, already including the intended fouling/design basis.
m².
% of installed thermal area.
Central Cooling Temperature Basis
°C.
kg/m³.
kJ/kgK.
kg/m³.
kJ/kgK.
% above current heat load.
Heat Load Register
Use OEM heat-rejection data where available. Duty factor lets you represent the present operating condition without changing the equipment design load.
| Use | Equipment / circuit | Design heat kW | Current duty % |
|---|
Central Cooler Register
Uclean and fouling resistance are entered separately. Effective U is calculated from 1/Udirty = 1/Uclean + Rf. Rated seawater flow and pressure drop are used for a parallel-flow capacity and pump-head screen.
| Use | Available? | Area m² | Clean U W/m²K | Rf m²K/W | Rated SW flow m³/h | Rated ΔP kPa |
|---|
Seawater Pump / System
m water, excluding cooler pressure drop.
%.
%.
Cooling-System Checks
Engineering boundary: this tool is a thermal/hydraulic screen, not a heat-exchanger selection program. Actual plate pattern, channel count, viscosity effects, allowable pressure drop, material/corrosion limits, port velocity, fouling behavior and pump operating point should be verified with the cooler maker and vessel system data.