Retrieve from table-cont. Saturation data:S Sg Two-phase data: s=(1-x)st+xsg=st+x(sg-St) Example:R134a,state 1 (0C,u1=138.43kJ/kg) Tab.A-11 u=49.79,ug=227.06--two-phase s=(1-x)st xsg Tab.A-11-x =0.5 ug uf =0.5580kJ/kg·K 上游充通大学 Wednesday,April 12,2017 5 SHANGHAI JIAO TONG UNIVERSITWednesday, April 12, 2017 5 Retrieve from table - cont. Saturation data: sf , sg Two-phase data: • Example: R134a, state 1 (0˚C, u1=138.43kJ/kg) uf=49.79, ug=227.06 Tab.A-11 two-phase =0.5 Tab.A-11