When the dew point of the outside air is...

Question 1 of 2707066636ee728f7522a1c517995

When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold, which is the BEST action to take?

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Question 1 of 27070

When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold, which is the BEST action to take?

🔍 Key Concepts

• Dew point and condensation: Moist air entering a cooler space can cause sweat (condensation) on cargo or structure. • Cargo sweat vs. ship’s sweat: Know which one happens when warm, moist air meets a cold surface, and how ventilation affects each. • Ventilation strategy: How do intake and exhaust blowers change the temperature and moisture content of hold air?

💭 Think About

• If outside air has a lower or equal dew point than the hold air, what does that say about the outside air’s moisture content compared to the air in the hold? • Would bringing in this outside air make condensation on cargo surfaces more or less likely? Why? • In this situation, is it safer to increase the exchange of air between outside and hold, or to reduce it? Which blower(s) directly control bringing outside air in?

✅ Before You Answer

• Compare outside dew point vs. hold dew point to decide if outside air is drier or more humid. • Think about whether you want to add drier air to the hold or trap more humid air inside. • Identify which system (intake vs. exhaust) actually introduces outside air into the cargo space.