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unit

Specific heat capacity

Definition

The specific heat or specific heat capacity is the physical measure, which defines the ratio of thermal capacity of the environment, of the uniform body or environment to its mass.

1 joule per kilogam kelvin is the specific heat or specific heat capacity of the substance weighing 1 kilogram at 1 joule per kelvin.

 

system of units:   SI;
statute:   derived unit;
name the value:   c;
unit name:   joule per kilogram kelvin;
symbol unit:   J/(kg·K);
relationship of definition:   c = Q/(m·ΔT);
dimension:   L2 T-2 Θ-1;
expression in other units:   cal/(g·K), Btu/(lb·°F);

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Units of measurement

namesymbol value in SI unit:
J/(kg·K
note
1 BtuIT per pound degree fahrenheitBtuIT/(lb·°F)= 4 186.8(1), (2)
1 Btuth per pound degree fahrenheitBtuth/(lb·°F)= 4 184(1), (3)
1 BtuIT per pound degree rankineBtuIT/(lb·°R)= 4 186.8(1), (2)
1 Btuth per pound degree rankineBtuth/(lb·°R)= 4 184(1), (3)
1 calorieIT per gram degree celsiuscalIT/(g·°C)= 4 186.8(2)
1 calorieth per gram degree celsiuscalth/(g·°C)= 4 184(3)
1 calorieIT per gram kelvincalIT/(g·K)= 4 186.8(2)
1 calorieth per gram kelvincalth/(g·K)= 4 184(3)
1 joule per gram kelvinJ/(g·K)= 1 000 
1 joule per kilogram degree celsiusJ/(kg·°C)= 1.0 

Note:

(1) - Btu - British thermal unit;

(2) - IT - common unit, international;

(3) - th - thermochemical unit;