6 questions Advanced

ECADEMY test

Boiler systems

This course test contains 6 questions and can be retaken at any time.

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Question 1 of 6 Advanced

1 What is the purpose of the condenser?
To ensure that no pockets of steam remain in the condensate when returning to the Boiler house.
To ensure that the temperature of the condensate is lower than the make-up water.
To utilize the remaining heat in the condensate to preheat the make-up water.
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Question 2 of 6 Advanced

2 What is the purpose of an economiser?
To harness the energy of the boiler’s flue gas and reuse it in other parts of the system
To build a boiler house in a more economical fashion
To harness the energy from the condenser and reuse it in other parts of the system
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Question 3 of 6 Advanced

3 What is the typical payback time of installing an economiser in a boiler system?
Installing an economiser is rarely a good idea and gives very long payback time.
Less than two years.
More than two years.
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Question 4 of 6 Advanced

4 What is direct boiler feed?
Boiler feed without the use of feed pumps
Variable speed pumps equipped with level sensors to control the water level
Boiler feed where the feed water is taken directly from the condensate tank
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Question 5 of 6 Advanced

5 How does an economiser work?
In an economiser condensate is led past a network of flue gas pipes, transferring heat from the condensate to the flue gas.
In an economiser cold flue gas is led past a network of pipes with hot water, transferring heat from the water to the flue gas to avoid condensation.
In an economiser flue gas is led past a network of pipes with cold water, transferring heat from the flue gas to the water.
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Question 6 of 6 Advanced

6 Why are feed valves problematic?
They have a tendency to become unstable and start fluctuating
Valves cause pressure loss, which increases energy consumption and requires larger pumps
Valves cause temperature loss
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Question 6 of 6 Advanced

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Correct
01.
Q: What is the purpose of the condenser?
A: To ensure that no pockets of steam remain in the condensate when returning to the Boiler house.
Correct
02.
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
03.
Q: What is the typical payback time of installing an economiser in a boiler system?
A: Less than two years.
Correct
04.
Q: What is direct boiler feed?
A: Variable speed pumps equipped with level sensors to control the water level
Correct
05.
Q: How does an economiser work?
A: In an economiser flue gas is led past a network of pipes with cold water, transferring heat from the flue gas to the water.
Correct
06.
Q: Why are feed valves problematic?
A: Valves cause pressure loss, which increases energy consumption and requires larger pumps
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