What is the main reason that live auxiliary...

Question 1 / 270705eccef9bbacbc34ba4d4563f

Question 1 of 270705eccef9bbacbc34ba4d4563f

What is the main reason that live auxiliary steam is normally attemporated before entering the feed heater of a flash evaporator?

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Question 1 of 27070

What is the main reason that live auxiliary steam is normally attemporated before entering the feed heater of a flash evaporator?

🔍 Key Concepts

• Flash evaporator operation – how feedwater is heated and flashed into vapor • Attemporation (desuperheating) – what happens when you spray water into live steam before it enters a heater • Scale formation – how temperature of heating surfaces affects mineral deposits in seawater systems

💭 Think About

• What physical property of the steam is mainly changed by attemporation: its temperature, its pressure, or the salinity of the brine? • In a flash evaporator, does attemporating the steam act directly on the brine overboard or on the metal heating surfaces first? • Which option describes an effect that logically follows from lowering the steam temperature entering the feed heater?

✅ Before You Answer

• Recall that attemporators are primarily temperature-control devices, not pressure-control devices. • Think about how very hot heating surfaces in contact with seawater affect scaling and tube life. • Check which choices talk about pressure changes vs heat-transfer/surface condition effects.

Question 1 of 27070

What is the main reason that live auxiliary steam is normally attemporated before entering the feed heater of a flash evaporator?

To reduce the rate of scale formation on heating surfaces.

To increase the brine overboard density.

To increase the pressure in the heat exchanger.

To increase the pressure in the first stage flash chamber.

Question 1 / 270705eccef9bbacbc34ba4d4563f

Question 1 of 270705eccef9bbacbc34ba4d4563f

What is the main reason that live auxiliary steam is normally attemporated before entering the feed heater of a flash evaporator?

Back

Question 1 of 27070

What is the main reason that live auxiliary steam is normally attemporated before entering the feed heater of a flash evaporator?