From a professional perspective, the capacity of a steam boiler is called "tonnage," and the capacity of a hot water boiler is called "power." Learn to switch between power and tonnage, you can quickly and easily understand the parameters of the boiler.
For hot water boilers, the boiler power is expressed in MW (1MW = 1000kW) or million kcal / hour (ten thousand kcal / h).
For a steam boiler, its power is also called the evaporation capacity, which is the amount of water converted into steam per hour: ton / hour (T / h) or kilogram / hour (kg / h). Of course, it can also be expressed in MW or KW.
In China, the correspondence between evaporation and power is:
1T / h = 1000kg / h = 0.7MW = 720kW = 600 thousand kcal / h = 600Mcal / h.
Units of power are also horsepower (Hp) and boiler horsepower (BHp).
1Hp = 0.745kw, 1BHp = 9.81kw
In some European and American regions, the steam boiler evaporation capacity is often marked with "at 212", which means that its evaporation capacity refers to the evaporation of 212 degrees Fahrenheit of water to 212 degrees Fahrenheit, which means that the water evaporation at 100 ° C Amount of steam at 100 ° C. In this way, 1kg of evaporation is equivalent to 540kcal of heat. We call it "equivalent evaporation", that is: 1T / h = 540,000 kcal / h. It can also be deduced from this that the relationship between boiler horsepower and "equivalent evaporation" is: 1BHp = 15.62kg / h.
In boiler equipment, these parameters also have corresponding conversion relationships.
1 ton / hour (t / h) ≈ 60 × 104 kilocalories (kcal) / hour (kcal / h) ≈ 0.7 megawatt (MW) ≈ 720K kilowatt (KW)
2. Boiler evaporation and boiler horsepower 1 ton / hour (t / h) ≈ 71.1 boiler horsepower (BHP);
3. Boiler pressure engineering unit and international unit of measurement 1 MPa (Mpa) ≈ 10 kgf / cm2 (kgf / cm2);
4. Megapascals and Pascals 1 Megapascal (Mpa) = 106 Pa (pa) 1 Pa (pa) = 0.01mbar (mbar) ≈ 10-5 kgf / cm² (engineering atmospheric pressure) (kgf / cm2) 1 pa (Pa) ≈0.1 millimeter water column (mmH2O);
5. Force and gravity 1 kgf (kgf) = 9.81 Newton (N);
6. Calories 1 kcal (kcal) = 4.187 kilojoules (KJ);
7. Volume (volume) 1 cubic meter (m3) = 1000 liters (L) 1 liter (L) = 1000 milliliters (ML).
We, Zhengzhou Fangkuai Boiler Co., Ltd. (Fangkuai), are excited to announce our participation in the Indonesia International Heating Technology Exhibition 2025. We will be showcasing our advanced boiler systems engineered for higher efficiency, lower emissions, and sustainable energy performance. Join us at Booth No. B1-08 from November 5–7, 2025 at the Jakarta Convention Center.
The event brings together EXPO BOILER, EXPO BIOMASS, EXPO PUMPS & VALVES, and EXPO CRANE — creating a comprehensive platform for technology exchange and business collaboration across the industrial heating and energy sectors in Southeast Asia.
At the exhibition, we will present our integrated solutions including biomass boilers, industrial steam systems, and full power plant EPC services. Our products emphasize:
Event Details
Date: November 5–7, 2025
Venue: Jakarta Convention Center, Indonesia
Booth: B1-08
We welcome industry partners, plant owners, EPC clients, and technology scouts to visit our booth and explore collaboration opportunities. Whether you are planning a biomass retrofit, a new power plant EPC project, or seeking high-efficiency boiler equipment, our engineers will be available for technical discussions and project consultations.
Visit our booth / Contact us
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