Originally Posted by
Darth Lefty
In my job, we use a lot of values that are in calories because a lot of the test data was made in the 1950s using bomb calorimeters. But a calorie is not an SI unit. It’s OK though because we wind up converting it to BTUs.
I just Googled " definition of calorie" and got this:
"
- 1.
a unit of energy equivalent to the heat energy needed to raise the temperature of 1 gram of water by 1 °C (now often defined as equal to 4.1868 joules).
- 2.
a unit of energy, often used to express the nutritional value of foods, equivalent to the heat energy needed to raise the temperature of 1 kilogram of water by 1 °C, and equal to one thousand small calories; a kilocalorie."
It may not be an SI unit but it's based on SI units, gms and degC.