In Houston--the nation's fourth-largest city, at least 3,900 people still had no power almost three weeks after the storm, and national gas prices rose as 25% of oil and gas production was shut down in the region. At one point, 75% of Harris County, which encompasses Houston, was ...
However, it is difficult to produce and store it in sufficient amounts at affordable prices. Due to this constraint, the majority of the current usages of hydrogen gas have been limited to its use as an additive to other fuels [11–13]. Indeed, hydrogen was recommended as a good additive...
Pellet boilers are the appliances that produce the lowest emissions of air pollutants compared with other solid fuel boilers [39]. However, the problem of emissions in the flue gas cannot be completely eliminated [41–43]. All currently available pellet boilers are class 5 according to the PN-...