Evaluating Properties of Liquids and Solids Approximate values for v,u,and h at liquid states can be obtained using saturated liquid data. p=constant v and u change very little with p at a fixed T T Saturated liquid v(T,p)≈v(T) p=constant saturated liquid u(T,p)≈w(T) T=constant h(T,p)≈u(T)+pw(T) v(T,p)=vf(T) UUF ≈h(T)+vr(T)儿p-psa(T)] If small enough works for many substances h(T,p)≈hr(T) 上游充通大 March 16,2018 12 SHANGHAI JLAO TONG UNIVERSITYMarch 16, 2018 12 Evaluating Properties of Liquids and Solids Approximate values for v, u, and h at liquid states can be obtained using saturated liquid data. v and u change very little with p at a fixed T saturated liquid If small enough works for many substances