A fixed orifice plate is generally installed...

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Question 1 of 205eccef9cbacbc34ba4d45815

A fixed orifice plate is generally installed in the live steam supply to a flash evaporator. One of the functions of this orifice is to control the quantity of the supplied steam. A second function is to __________.

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🔍 Key Concepts

• fixed orifice plates and how they affect flow and pressure drop • the relationship between steam pressure, temperature, and saturation in an evaporator system • the purpose of the salt water feed heater in a flash evaporator plant

💭 Think About

• Think about what happens to steam as it passes through a restriction: how do pressure and temperature change, and what does that do to its state (superheated vs saturated)? • Consider what the salt water feed heater needs from the steam supply to work efficiently. Is it more important to stabilize pressure, control temperature, or change the steam’s condition? • Look at each choice and ask: is this a direct consequence of putting steam through a fixed, non‑adjustable restriction (orifice)?

✅ Before You Answer

• Check how a pressure drop across an orifice affects the steam’s ability to give up heat in the feed heater. • Verify whether an orifice can actually guarantee saturation or just influence conditions that favor it. • Make sure the function you choose matches something you’d realistically expect from a simple flow restriction, not from a control valve or more complex device.

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