On average Detroit's firefighters, police officers and other city employees receive pension checks that are similar or slightly smaller in size than the national average of $30,000 a year, according to pension experts.
Steam-Methane Reforming. Most hydrogen produced today in the United States is made via steam-methane reforming, a mature production process in which high-temperature steam (700Â°Câ1,000Â°C) is used to produce hydrogen from a methane source, such as natural gas.
Figure 4-2. These drawings show how much heat is required to generate one pound of steamat 100 pounds per square inch pressure. Note the extra heat and higher temperature required tomake water boil at 100 pounds pressure than at atmospheric pressure.Note, too, the lesseramount of heat required to change water to steam at the higher temperature. Figure 4-1.he amount of heat (ex-pressed in Btu) required to change apound of boiling water to a pound ofsteam. This same amount of heat isreleased when a pound of steam iscondensed back into a pound of water.This heat quantity is different for everypressure/temperature combination, asshown in the steam table.