Dear Dr. Vitalii, Of course those paper were helpful thanks so much.

The factor ( as you mentioned surface factor) will depend on surface liquid combination.

You can refer,

1) Rohsenow.W.M, Trans.ASME,74,969,1952

2) Collier and Thome, Convective boiling and condensation, Oxford university press.

for getting reliable values of this factor.

Thanks Dear Ajith Krishnan for Refs.