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Condensing plant: condensate temperature relative to cooling-water inlet In a surface condenser, compare the temperature of condensate leaving the condenser to that of the circulating water at inlet. Choose the correct relation.

Difficulty: Easy

Higher than the cooling-water inlet temperature
Lower than the cooling-water inlet temperature
Equal to the cooling-water inlet temperature
Unpredictable; depends only on vacuum pump speed

Correct Answer: Higher than the cooling-water inlet temperature

Explanation:

ConceptCondensate in a surface condenser is approximately at the saturation temperature corresponding to condenser pressure (often ~30–45 °C under vacuum). The cooling water enters at a lower temperature and exits warmer after absorbing latent and sensible heat.

ThereforeAt the outlet of the condenser, the condensate is hotter than the cooling-water inlet temperature.

Condensing plant: condensate temperature relative to cooling-water inlet In a surface condenser, compare the temperature of condensate leaving the condenser to that of the circulating water at inlet. Choose the correct relation.

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