Wiktionary
n. The energy contained in a fuel before it is processed
Wikipedia
Primary energy (PE) is an energy form found in nature that has not been subjected to any conversion or transformation process. It is energy contained in raw fuels, and other forms of energy received as input to a system. Primary energy can be non-renewable or renewable.
Total Primary Energy Supply (TPES) is a term used to indicate the sum of production and imports subtracting exports and storage changes.
The concept of primary energy is used in energy statistics in the compilation of energy balances, as well as in the field of energetics. In energetics, a primary energy source (PES) refers to the energy forms required by the energy sector to generate the supply of energy carriers used by human society.
The use of primary energy as a measure ignores conversion efficiency. Thus forms of energy with poor conversion efficiency, particularly the thermal sources, coal, gas and nuclear are overstated, whereas energy sources such as hydroelectricity which are converted efficiently, while a small fraction of primary energy are significantly more important than their total raw energy supply may seem to imply.
PE and TPES are better defined in the context of Worldwide energy supply.
Usage examples of "primary energy".
Then, from a million years' experience, I opened the right-hand thrust damper slightly, selected the PRIMARY energy feed and INTERNAL energy source, switched the gravitation boost to ON, and touched three of the five primer switches.
That's because this vessel's primary energy armament is right here.
Worms are about the only thing the octospiders eat regularly that does not get its primary energy from photons.
In a basement level of the complex, beneath pipeworks and supporting structures, where the primary energy converters loomed several hundred feet overhead, they opened a concealed door into a further shaft that gave no outward sign of existing, and which didn't appear in any of the official plans or construction records.
In a basement level of the complex, beneath pipeworks and supporting structures, where the primary energy converters loomed several hunÂ.
Star Trek fandom's primary energy source is a combination of these internal contrasts within Star Trek, and the contrasts in our external-to-STAR-TREK real-world situation.
This time, they fired at extremely close range, directly into the 'midships radiation fire that appeared to be centered in the heavy structures around the ship's primary energy retorts.
It was almost as though there was within them a metabolic switch which, once tripped, told them in no uncertain terms that the primary energy fund had been exhausted and it was time to withdraw.
I would also like an opportunity to view the primary energy-convertor section and its layout.
The Cyclops was to surround the men and itself with a secondary force field, concentric to its primary energy dome.