Which is better, pressurized hot water boiler or atmospheric hot water boiler
Which is better, pressurized hot water boiler or atmospheric hot water boiler
Whether a hot water boiler is better under pressure or normal pressure requires comprehensive consideration of many aspects. The following is a comparative analysis of two types of hot water boilers from different perspectives:
1. Service life
The main components of a normal pressure hot water boiler, such as the tube plate, drum, and furnace liner, are very thin and have a relatively short service life; Pressure hot water boilers are special equipment that require high design and processing standards, and have a longer service life.
2. Energy saving effect
The electric power of the circulating water pump in a normal pressure hot water boiler is higher than that of a pressure boiler, resulting in higher energy consumption. As the normal pressure boiler is an open type, after the system stops, the circulating water in the system will return to the boiler due to loose valve closure, causing waste; Pressure hot water boilers only need to overcome pipeline resistance, have a more rigid structure, and have better energy-saving effects.
3. Temperature range of hot water supply
Pressure hot water boilers can supply high and low temperature hot water, while atmospheric hot water boilers can only supply low temperature water below 90 ℃.
4. Heating effect
Under the same heating conditions, the indoor heating temperature that can be achieved by a normal pressure hot water boiler of the same capacity is much lower than that of a pressure hot water boiler heating system, and the heating effect is relatively poor.
5. Boiler hydrodynamic circulation
The circulating water pump of a normal pressure hot water boiler pumps water from the boiler. If the return water distribution is not reasonable, subcooling boiling may occur in the high-temperature area, causing scaling on the heating surface and deteriorating heat transfer, resulting in cracking of the tube plate and leakage of the weld seam; Relatively speaking, pressure hot water boilers are much better.
6. Multiple heating restrictions
The atmospheric hot water boiler has the drawback of high energy consumption in water transportation and lack of energy saving.
7. Investment cost
The main difference between atmospheric hot water boilers and pressure hot water boilers lies in the price of the main body. Atmospheric hot water boilers use thin materials and are relatively cheaper, but the investment cost for the entire project is similar.
Overall, the performance of pressurized hot water boilers is better, but the requirements are higher. When selecting, a reasonable choice should be made based on the actual situation of the boiler installation site and the operational requirements of the boiler.