what is mean by specific latent heat of fusion ?
Answers
specific latent heat of fusion :-
the amount of heat energy absorbed at contant temperature by unit mass of a solid to convert into liquid phase is called the specific latent heat of fusion .
The amount of heat gained by a solid object to convert it into a liquid without any further increase in the temperature is known as the latent heat of fusion. The content of latent heat is complex in the case of sea ice because sea ice and brine can exist together at any temperature and melt at a temperature other than 0oC when bathed in a concentrated salt solution, just like it occurs in the walls of brine cells when brine cells migration occurs. If m kg of solid converts to a fluid at a constant temperature that is its melting point, the heat consumed by the substance or the latent heat of fusion formula is expressed as :
Q = m × L
Wherein
L = specific latent heat of fusion of substance.
The temperature of the substance changes from t1 (low temperature) to t2 (high temperature) the heat which the material absorbs or releases is expressed as
Q = mc Δt
Q = mc (t2 – t1)
The total amount of heat absorbed or liberated by the material is
Q = mL + mc Δt.