6 questions Basic

ECADEMY test

27 - Boiler systems

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Question 1 of 6 Basic

What is the typical payback time of installing an economiser in a boiler system?

Question 6 of 6 Basic

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Correct
Q: What is the typical payback time of installing an economiser in a boiler system?
A: Less than two years.
Correct
Q: What is the main shortcoming of on/off level control?
A: It does not maintain a constant level in the boiler
Correct
Q: What is direct boiler feed?
A: Variable speed pumps equipped with level sensors to control the water level
Correct
Q: What is the purpose of an economiser?
A: To harness the energy of the boiler’s flue gas and reuse it in other parts of the system
Correct
Q: When does cavitation in the feed pumps occur?
A: Cavitation occurs when the pressure in the first impeller or pipes drops below the vapour pressure of the water.
Correct
Q: Why are feed valves problematic?
A: Valves cause pressure loss, which increases energy consumption and requires larger pumps