Subcooled Liquids

These are compressed liquids in a single phase, T and P are independent, intensive properties

Pressure effect is so small it is usually negligible

You always use this for R-134a

For a given property y Where y can be something like v, h, T etc… You can use
$y\left(T,P\right)=y\left(T\right)=y_f\left(T\right)$
Therefore, compressed liquids are commonly treated using saturated liquid properties at a given temperature.

ENTHALPY IS THE EXCEPTION $h\left(T,P\right)=h_f\left(T\right)+v_f\left(T\right)\left[P-P_{sat}\left(T\right)\right]$
Where P is $P_2$ and $P_{sat}$ is $P_1$.