1.kcal: heat unit, refers to one of the output units of hot water boilers, expressed as “Kcal/ hour (Kcal/h) .

2.Boiler evaporation is the amount of water that turns into steam per hour: tons/hour (T/h) or kg/hour (Kg/h).
A ton of boiler can turn a ton of water into steam every hour. In China, the corresponding relationship between the evaporation and power of steam boilers is: 1T/h=1000kg/h=0.72MW=720kW≈955Hp (horsepower) 1MW=10*6W 1kW=1000W 1Hp =0.745kW 1 ton/hour (t/h) ≈60×10^4 kcal (kcal)/hour (kcal/h) ≈ 0.7MW ≈720K KW (KW)

3.The tonnage of the boiler refers to the heat sent out by the boiler per hour, which is equivalent to the heat of the saturated steam in tonnage.

4.1 mw(h) =1000 kw(h), 1 kw(h) = 1000 w(h), 1cal= 4.18j, 1 kcal = 4.18kj, MW is the power of a boiler.