• ### Heating Systems Flow Rates - Engineering ToolBox

10 liters of water is heated from 10oC to 100oC in 30 minutes. The heat flow rate can be calculated as. h = (4.2 kJ/kg oC) (1000 kg/m3) (10 liter) (1/1000 m3/liter) ( (100oC) - (10oC)) / ( (30 min) (60 s/min)) The 24V DC electric current required for the heating can be calculated as.

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• ### Boiler Formulas | Johnston Boiler | Top Quality Boiler ...

Water enters the boiler at 225°F. The boiler pressure is 100 psi and the boiler water temperature is 338°F. The latent heat is 881 Btu. What is the factor of evaporation? FE = SH + LH / 970.3

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• ### Boiler water consumption - Lenntech

Moreover the water consumption is usually determined with the blow-down brine depending on the recirculated steam and the make-up water concentration. B=S x (1 - r) x m / b - m. B = Blowdown. S = Steam rate. b = boiler water TDS concentration. m = make-up water TDS concentration. r = fractional condensate return

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• ### Boiler Water - an overview | ScienceDirect Topics

Blowdown rates typically range between 4% and 8% of feedwater flow but should never be less than 1% even if the feedwater is high purity demineralized or evaporated water. The suggested limits for boiler water solids are based upon one or more of the following factors :

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