Does the questioner want to ask "What size steam generator is needed for a 300 kg/h evaporator?" 300 kg (0.3 tons). Steam generator, also called steam heat source machine (commonly known as boiler), is a mechanical device that uses the thermal energy of fuel or other energy to heat water into hot water or steam. The 300 kg (0.3 ton) vertical biomass steam generator refers to an evaporator with a rated evaporation capacity of 300 kg per hour, which can produce 300 kg of steam per hour.