• NACA 4412 is good to use. It has low drag and increased lift forces at relatively low wind speeds . I used this profile for my wind turbine designs and the stress on the overall design was also relatively low.

Thank you Mr. Krishneel Singh

You can also try NACA 63221 ,63215 ..They show good performance with wind turbines

Thank you Sir

For small wind turbine blade you can also try NACA 5510. Or the combination of NACA 5510 with others in NACA 55... series.

From NACA series try NACA  4412, 4418,4421

also study about s809 compare  Cl/Cd ratio witch higher is preferable

at low Reynold numbers

See the attached file cfd  of NACA 4412 May be helpful for your work.

You can also go through this paper

which type of airfoil used for 60kw 2 blade horizontal wind turbine?

For that you need to understand about behavior of different airfoil in particular range of Reynolds number

find the range of Reynolds numbers and analyse it.

http://airfoiltools.com/

this website may help you.

which aerofoil type is best for wind turbine blades operating in low wind speed regions(