United Companies, an Oldcastle division that operates six hot-mix asphalt plants in Colorado, is forging new territory in plant efficiency by turning to an old, reliable fuel source — coal. Jim Bryan, ...

Coal plant operators have reasonably accurate knowledge of how much coal they are burning in any individual boiler, either by testing to determine the exact unit heat rate, or measuring the rate at ...

The alchemy of burning any solid fuel-including coal-requires mixing fuel and air in just the right proportion at just the right time. Get the recipe wrong, and reduced efficiency and load rating will ...

China has one of the largest reserves of anthracite coal in the world. Anthracite is a dense, hard, brittle, and homogenous type of coal that has relatively higher heating value (HHV) than lower rank ...

Gaunt and grimy stokers, silhouetted in furnace glare, are no longer an integral part of a ship’s bowels. Even coal burners can do without them. Last week members of the Fuel Conservation Committee of ...