Heat Equation

[ckoschil]

What is the preferred name for the following equation:
Q = m*Cp*deltaT ?

For instance, P*V = n*R*T is called the ideal gas law.

Thanks.

 

[hotfoot]

I have not heard this equation called by a particular name other than, "required heat" or "specific heat". However, for those not familiar with the equation. It is; the amount of heat to be supplied to or extracted from a substance to change it's temperature. This equation is commonly used for liquids and solids. Where the specific heat is generally independent of pressure.

Where:

Q = heat
q= heat per unit mass
m = mass of substance
Cp = specific heat of substance
delta t = temperature difference

Therefore:

q = Q/m
Cp = Q/m(delta t) = q/delta t
Q = mCp(delta t)

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[Jonkatz]

This equation is essentially a statement of the first law of thermodynamics in terms of Avg. Cp (rather than enthalpies). Heat input (Q) = (Heat absorbed).
-j.katz