Boiler FAQs | Yuji Boiler Technical Support

Boiler Knowledge

Q: How do I determine the required steam capacity?

A: The function of a boiler is to convert the hot water inside the unit into steam using the thermal energy from fuel.

Steam capacity refers to how many kilograms or liters of water you need to convert into steam per hour. By calculating your total steam consumption, we can help you select a boiler with the appropriate capacity to ensure efficient operation and avoid energy waste.

Q: What is steam pressure?

A: Boiler steam pressure refers to the pressure exerted by the steam at the boiler outlet during operation. It is typically measured in Bar or Megapascals (MPa). When selecting the steam pressure, it should not be lower than the highest required pressure of all steam-consuming equipment, and a margin of 1–3 bar should be reserved for pipe resistance loss to ensure safety and efficiency.

Quick Reference:

1 MPa ≈ 10 Bar ≈ 145psi ≈ 10.2 kg/cm²

Steam temperature and pressure are directly correlated: higher pressure equals higher thermal energy.

Click our article [Pressure-Temperature Chart] to find the exact temperature for your specific requirements

Q: What materials are used for the boiler’s pressure-bearing components?

A: We use high-grade carbon steel specifically engineered for boilers and pressure vessels, ensuring maximum safety and durability. The specific material grade is selected based on the boiler’s capacity and working pressure, strictly adhering to Chinese national and international standards:

Boiler Shell & Drum: We primarily use Q245R or Q345R specially treated pressure vessel steel (equivalent to ASME SA516 or ASTM A515 grades).
Smoke Tubes: We use 20# seamless steel tubes (compliant with GB/T 3087, equivalent to ASTM A106 or ASTM A192), which are renowned for their excellent heat exchanging performance and resistance to thermal stress.

As a designated manufacturer of boilers and pressure vessels in China, our engineering team ensures that every steel plate and tube meets the required thickness and tensile strength to safely handle your specific pressure requirements.

Q: What is the lifespan of the boiler?

A: With proper water treatment and regular maintenance, the design life of our boiler pressure parts is typically 20 years.

However, the actual operational lifespan is influenced by external factors, including local water chemistry, power supply stability, site conditions, and operator proficiency. By strictly adhering to our Standard Operating Procedures, users can significantly extend the boiler’s service life and maintain peak thermal efficiency.

Boiler Operation

Q: Why does my boiler system require water treatment?

A: Natural water contains hardness ions such as calcium and magnesium, which form scale under the high temperatures of the boiler. This scale buildup significantly reduces heat exchanging efficiency and can eventually lead to critical tube failure or bursting.

To protect your investment, we equip every system with a fully automatic water softener. This ensures that the feedwater hardness is maintained below 0.03 mmol/L, effectively preventing scale formation and extending the overall service life of your boiler.

Q: Can I reuse the condensed water?

A: Absolutely yes. Condensate is high-temperature distilled water. By installing a Condensate Recovery System, you can recycle this heat back into the boiler, drastically reducing water consumption and fuel usage.

Q: How long does it take to generate steam from a cold start?

A: Depending on the boiler capacity and structural design, our fast-start series can generate stable steam within 5 to 15 minutes. This rapid response minimizes energy waste during the pre-heating process and allows your production line to commence operations much sooner.

FAQ

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