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).
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