An unsteady vacuum in a submerged tube...

Question 1 / 205eccef9cbacbc34ba4d45889

Question 1 of 205eccef9cbacbc34ba4d45889

An unsteady vacuum in a submerged tube evaporator may be caused by __________.

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Question 1 of 20

5eccef9cbacbc34ba4d45889

An unsteady vacuum in a submerged tube evaporator may be caused by __________.

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🔍 Key Concepts

• Submerged tube evaporator operation and what creates/holds vacuum • Difference between a steady loss of vacuum and an unsteady (fluctuating) vacuum • Role of air ejectors/vents and how non‑condensable gases affect vacuum

💭 Think About

• Ask yourself: which condition would cause vacuum to swing up and down rather than stay low all the time? • Which option would most directly affect the amount of air/non‑condensables entering or being removed from the system? • Think about how a high water level or steam quality would usually show up in operation—would that make vacuum fluctuate, or just be consistently poor?

✅ Before You Answer

• Identify which choices mainly affect air/non‑condensable gas in the shell vs. those that mainly affect heat transfer or capacity • Decide which option would cause a variable introduction/removal of air, leading to unstable readings, rather than a constant condition • Mentally separate problems that cause constant low vacuum from those that cause surging or hunting vacuum and match that to the best choice

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Question 1 of 20

An unsteady vacuum in a submerged tube evaporator may be caused by __________.

air leaks in the tube nests

improper venting of the tube nests

inadequate steam quality to the air ejector nozzles

high water level in the shell

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Question 1 / 205eccef9cbacbc34ba4d45889

Question 1 of 205eccef9cbacbc34ba4d45889

An unsteady vacuum in a submerged tube evaporator may be caused by __________.

Back

Question 1 of 20

5eccef9cbacbc34ba4d45889

An unsteady vacuum in a submerged tube evaporator may be caused by __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed