1
What is the purpose of an economiser?
2
What is the main shortcoming of on/off level control?
3
Why are feed valves problematic?
4
What is direct boiler feed?
5
What is the typical payback time of installing an economiser in a boiler system?
6
Why is chemical treatment of the make-up water necessary?
Test results
01.
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
01.
Q: What is the purpose of an economiser?
A: To build a boiler house in a more economical fashion
01.
Q: What is the purpose of an economiser?
A: To harness the energy from the condenser and reuse it in other parts of the system
02.
Q: What is the main shortcoming of on/off level control?
A: It does not maintain a constant level in the boiler
02.
Q: What is the main shortcoming of on/off level control?
A: It is the most expensive way of controlling the pumps
02.
Q: What is the main shortcoming of on/off level control?
A: The energy consumption on the pumps is ridiculously high
03.
Q: Why are feed valves problematic?
A: They have a tendency to become unstable and start fluctuating
03.
Q: Why are feed valves problematic?
A: Valves cause pressure loss, which increases energy consumption and requires larger pumps
03.
Q: Why are feed valves problematic?
A: Valves cause temperature loss
04.
Q: What is direct boiler feed?
A: Boiler feed without the use of feed pumps
04.
Q: What is direct boiler feed?
A: Variable speed pumps equipped with level sensors to control the water level
04.
Q: What is direct boiler feed?
A: Boiler feed where the feed water is taken directly from the condensate tank
05.
Q: What is the typical payback time of installing an economiser in a boiler system?
A: Installing an economiser is rarely a good idea and gives very long payback time.
05.
Q: What is the typical payback time of installing an economiser in a boiler system?
A: Less than two years.
05.
Q: What is the typical payback time of installing an economiser in a boiler system?
A: More than two years.
06.
Q: Why is chemical treatment of the make-up water necessary?
A: To give the water a distinctive small to avoid confusion with drinking water.
06.
Q: Why is chemical treatment of the make-up water necessary?
A: To ensure that scaling is retained in the boiler and not in the piping and equipment.
06.
Q: Why is chemical treatment of the make-up water necessary?
A: To prevent scaling in the boiler and the water from turning acidic when heated.