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Fresh Water Generator Capacity

Evaporator capacity Q = (Q_jacket × η)/h_fg - vacuum-flash generator using main-engine jacket heat.

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Formula, assumptions, and limits

m˙FW=Qjacketηhfg\dot m_\text{FW} = \frac{Q_\text{jacket} \eta}{h_{fg}}
SymbolMeaningUnit
QjacketQ_\text{jacket}Jacket water heatkW
ηηEvaporator effectiveness
hfgh_{fg}Latent heat at vacuumkJ/kg

Source: Alfa Laval AquaChem / Jowa - FW generator data

In short

Evaporator capacity Q = (Q_jacket \u00d7 \u03b7)/h_fg - vacuum-flash generator using main-engine jacket heat.

Learn the theory Marine Auxiliary Engines and Generators