B): Using the homogeneous flow pressure drop method, calculate the two phase pressure drop for up flow in vertical tube of ( 10 mathrm{~mm} ) internal diameter that is ( 2 mathrm{~m} ) long. The flow is adiabatic ,the mass Tow rate is ( 0.02 mathrm{~kg} / mathrm{s} ) and the vapor quality is 0.05 . The fluid is ( mathrm{R}-123 ) at saturation temperature of ( 3^{circ} mathrm{C} ) and saturation pressure of 0.37 bar whose physical properties are : ( ho l=1518 mathrm{~kg} / mathrm{m}^{3} cdot ho mathrm{g}= ) ( 2.6 mathrm{~kg} / mathrm{m}^{3}, mu g=12.6 imes 10^{-6} ) Pa.s,( mu l=58.56 imes 10^{-5} ) Pa.s.

B): Using the homogeneous flow pressure drop method, calculate the two phase pressure drop for up flow in vertical tube of 10mm internal diameter that is 2m long. The flow is adiabatic , the mass flow rate is 0.02kg/s and the vapor quality is 0.05 . The fluid is R123 at a saturation temperature of 3C and saturation pressure of 0.37 bar , whose physical properties are : =1518kg/m3g= 2.6kgm3,g=12.6106Pa.s,l=58.56105Pa.s