I posted yesterday a new message. As I wrote I need to calculate the insolation on a tubolar reactore made of trasparent plastic materials, where i grow up microalgae for biodiesel. It's really important to me know how much solar radiation is absorbed and trasmitted by the reactor. My prblem is I'm not able to drawn a tubolar closed reactor with Ecotect, and then. Can you Help me.

Niccolò