The vacuum maintained in the salt water feed...

Question 1 / 270705eccef9cbacbc34ba4d4581b

Question 1 of 270705eccef9cbacbc34ba4d4581b

The vacuum maintained in the salt water feed heater shell of a flash-type evaporator is generally accomplished by __________.

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Question 1 of 27070

The vacuum maintained in the salt water feed heater shell of a flash-type evaporator is generally accomplished by __________.

🔍 Key Concepts

• Flash-type evaporator flow path: first stage, second stage, and salt water feed heater relationship • How vacuum is created and maintained in multi-stage distilling plants • Role of a fixed orifice vs. air ejector in controlling pressure or vacuum

💭 Think About

• Trace the direction of vapor and brine flow from the first stage through later stages and to the salt water feed heater. Which component is already under vacuum? • Ask yourself: does the vacuum usually come from a separate, additional piece of equipment, or is it commonly taken from an existing low‑pressure point in the system? • Consider which option would allow a controlled pressure drop rather than a large, uncontrolled flow that would upset the stages.

✅ Before You Answer

• Verify which component in a flash-type evaporator normally has the strongest vacuum during normal operation. • Check which option provides a controlled connection (not fully open) between a low‑pressure area and the salt water feed heater shell. • Confirm whether the steam supply line is usually a source of vacuum or a source of positive pressure in this system.

Question 1 of 27070

The vacuum maintained in the salt water feed heater shell of a flash-type evaporator is generally accomplished by __________.

a separate air ejector unit

a direct unimpeded connection between second stage and salt water feed heater

by an external line from the first stage via a fixed orifice

the fixed orifice provided in the steam supply line

Question 1 / 270705eccef9cbacbc34ba4d4581b

Question 1 of 270705eccef9cbacbc34ba4d4581b

The vacuum maintained in the salt water feed heater shell of a flash-type evaporator is generally accomplished by __________.

Back

Question 1 of 27070

The vacuum maintained in the salt water feed heater shell of a flash-type evaporator is generally accomplished by __________.