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A comment on Giant 'sand battery' holds a week's heat for a whole town. Parent comment

Re:Giant 'sand battery' holds a week's heat for a whole town by logtempo on Wednesday March 13, 2024 @09:16PM (#39699610)
your number is good, as it's the heavier from all oil. Don't work for all type of oil though.

https://en.wikipedia.org/wiki/API_gravity

    Light crude oil has an API gravity higher than 31.1° (i.e., less than 870 kg/m3)
    Medium oil has an API gravity between 22.3 and 31.1° (i.e., 870 to 920 kg/m3)
    Heavy crude oil has an API gravity below 22.3° (i.e., 920 to 1000 kg/m3)
    Extra heavy oil has an API gravity below 10.0° (i.e., greater than 1000 kg/m3)
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