Steam Boiler and Blowdown Pressure are the same. Combustion Efficiency is the % of fuel energy that is directly added to the feedwater and not otherwise lost or used. Blowdown Rate is the % of incoming feedwater mass flow rate that leaves the boiler as a saturated liquid at boiler pressure.
Learn MoreJan 15 2020 · A steam boiler must burn more fuel (gas or oil) to raise the temperature of its water to boiling level and this makes hot water boilers more energy efficient using approximately 25% less energy than steam boilers. However as mentioned above steam is more efficient at the transfer of heat than hot water.
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