... /h)2550100150200300Heating methodSteam + electric heater, diesel oil, natural gas or coal etcDiameter of tower (mm)1,2001,4001,6002,2002,6003 ... ,00030,000Heating methodSteam + electric heater, diesel oil, natural gas or coal etcDiameter of tower (mm)19,00020,30021,80022,80024,00025 ...