hydrogen equivalent

hydrogen equivalent

[′hī·drə·jən i′kwiv·ə·lənt]
(chemistry)
The number of replaceable hydrogen atoms or hydroxyl groups in a molecule of an acid or a base.
References in periodicals archive ?
The newfound structure lies about 49,000 light-years from the galaxy's center, and one of the arm's many large molecular clouds contains an amount of molecular hydrogen equivalent to that of 50,000 suns.
It is also estimated that, compared to a litre of petrol, this hydrogen equivalent will cost around 80p, with further reductions likely once the technology is widely in use.
The capacity of Teesside's underground storage, developed by ICI for the petrochemical industry in the 1960s, amounted to "the hydrogen equivalent of one million gallons of petrol," Dr Roddy said.
For starters, a single pound of nuclear fuel can provide the hydrogen equivalent of 250,000 gallons of gasoline, with zero carbon emissions.
The cost of hydrogen is also about four times too high today, he said, noting that the 2010 goal is to bring down the cost of the hydrogen equivalent of a gallon of gas to $1.
In other words, for every 100 energy units (such as joules or BTU) of heat obtained from sunlight, an amount of hydrogen equivalent to 25 energy units (of fuel energy) can be obtained.