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.
Note the extra heat and higher temperature required to. make water boil at 100 pounds pressure than at atmospheric pressure. Note, too, the lesser. amount of heat required to change water to steam at the higher temperature. Figure 4-1. These drawings show how much. heat is required to generate one pound of.