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What is the main shortcoming of on/off level control?

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How does an economiser work?

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What is the purpose of an economiser?

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Why is chemical treatment of the make-up water necessary?

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What is direct boiler feed?

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Why are feed valves problematic?

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1: What is the main shortcoming of on/off level control?
It does not maintain a constant level in the boiler
1: What is the main shortcoming of on/off level control?
It is the most expensive way of controlling the pumps
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1: What is the main shortcoming of on/off level control?
The energy consumption on the pumps is ridiculously high
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2: 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.
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2: How does an economiser work?
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.
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2: How does an economiser work?
In an economiser flue gas is led past a network of pipes with cold water, transferring heat from the flue gas to the water.
3: 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
3: What is the purpose of an economiser?
To build a boiler house in a more economical fashion
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3: What is the purpose of an economiser?
To harness the energy from the condenser and reuse it in other parts of the system
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4: Why is chemical treatment of the make-up water necessary?
To give the water a distinctive small to avoid confusion with drinking water.
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4: Why is chemical treatment of the make-up water necessary?
To ensure that scaling is retained in the boiler and not in the piping and equipment.
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4: Why is chemical treatment of the make-up water necessary?
To prevent scaling in the boiler and the water from turning acidic when heated.
5: What is direct boiler feed?
Boiler feed without the use of feed pumps
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5: What is direct boiler feed?
Variable speed pumps equipped with level sensors to control the water level
5: What is direct boiler feed?
Boiler feed where the feed water is taken directly from the condensate tank
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6: Why are feed valves problematic?
They have a tendency to become unstable and start fluctuating
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6: Why are feed valves problematic?
Valves cause pressure loss, which increases energy consumption and requires larger pumps
6: Why are feed valves problematic?
Valves cause temperature loss
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