Mechanism of Thermal Change during the Coal Gas
The exhaust gases from the coal gas
engines, which are emitted at temperatures exceeding 500oC are utilized to generate steam and drive a steam turbine generator to give additional 20% electricity (Fig.8).
Conditions of Tectonic Stress and Coal Gas
. In the tectonic area, the horizontal stress of the gravity stress field increases with the effect of tectonics and forms stress field types of [[sigma].sub.v] > [[sigma].sub.H] > [[sigma].sub.h], [[sigma].sub.H] > [[sigma].sub.v] > [[sigma].sub.h], and [[sigma].sub.H] > [[sigma].sub.h] > [[sigma].sub.v].
We hadn't settled the argument about the coal gas
being lighter than air.
The blast at the Baixing Coal Mine in north-east China's Heilongjiang province is believed to have happened when sparks ignited coal gas
that had accumulated due to lack of proper ventilation.
By 1812, commercial companies were supplying coal gas
for heating and lighting London.
1754: William Murdoch,Scottish engineer who, withJames Watt and Matthew Boulton,pioneered the use of coal gas
lighting in 1792, was born.
Fuel cells make sense and are environmentally positive if fueled by solar or wind generated hydrogen, for example, but make little sense if fueled by LP, coal gas
or other fossil fuel hydrocarbons.
The plant will need minor modifications, including new ducts and other equipment to divert a portion of the clean coal gas
from the main power system to the fuel cell.
From the earliest days of coal mining, it was known that lethal explosions could occur due to the release of coal gas
, or "coal bed methane" (CBM) gas, if the mines were not well ventilated.
Monck Mason and eight passengers, starting from Wales, had crossed the Atlantic in a balloon inflated with coal gas
, making the trip in 75 hours and landing at Sullivan's Island, Charleston.