Gas-Fired Boilers and Furnaces | Department of Energy
Gas-Fired Boilers and Furnaces. A residential natural gas meter. Gas boilers and furnaces can be fueled by either natural gas or propane with simple modifications accounting for the different characteristics of the fuels. Propane is usually more expensive as a fuel
Boiler Conversion to Natural Gas (Co-) Firing - Jansen ...
gas (co-)firing capability to existing coal- oil- and biomass-fired power boilers and recovery boilers. The driving forces behind this interest are 1) the current low cost for natural gas 2) combustion challenges that are sometimes experienced with burning existing solid fuels and 3) difficulties achieving MACT emissions compliance.
Commercial natural gas boiler Qualified boilers have an efficiency rating of 90% or greater making them more efficient than models that meet the federal minimum standard for energy efficiency. Requirements:
The boiler efficiency is usually reduced to 84-85% when a coal fired boiler is converted to natural gas. The biggest change is due to the combustion of Hydrogen. This is normally a 4% heat loss while firing coal and about a 11% heat loss while firing natural gas. When firing other losses such as dry