Search results
Results from the WOW.Com Content Network
Additionally, specific physical and mechanical properties of coal and particular carbonization properties The calorific value Q of coal [kJ/kg] is the heat liberated by its complete combustion with oxygen. Q is a complex function of the elemental composition of the coal [citation needed]. Q can be determined experimentally using calorimeters.
Anthracite, also known as hard coal and black coal, is a hard, compact variety of coal that has a submetallic lustre. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals.
English: Title: Coal mining in Anthracite Region, Pennsylvania Subjects: Industrial facilities Places: Pennsylvania > Luzerne (county) > Wilkes-Barre Notes: Title from item. Extent: 1 print (postcard) : linen texture, color ; 3 1/2 x 5 1/2 in. Accession #: 06_10_018566
Diesel fuel has an HHV value of 44.80 MJ/kg and anthracite coal a value of 32.50 MJ/kg. Moisture and ash-free firewood has a lower value of 21.70 MJ/kg while dry peat has the lowest value of all common fuels of about 15.00 MJ/kg. These are somewhat ideal values and the actual heat realized by any fuel will depend on the fireplace or combustion ...
Smokeless fuels generally have a high calorific value, with that of anthracite being greater than dry wood for example, and many smokeless briquettes are made from this type of coal. Thus anthracite has a calorific value of 32.5 MJ/kg compared with that of dry wood of about 21 MJ/kg.
See American coal miners below: Coal was originally used in America in the 1300s by the Hopi Indians as a way to cook their food, warm themselves and fire their clay. Coal did not resurface in the ...
Anthracite Coal Region of Pennsylvania (1 C, 21 P) C. Coal mining disasters in Pennsylvania (18 P) Pages in category "Coal mining in Pennsylvania"
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate