Import binary database file into postgres

I have a quite newbie question that I do not know if is possible or not:

I had to format my computer, and the only way to keep my postgres database was accessing to data with my folder browser (nautilus)

So now I have the data folder with a lot of binary data inside, from /var/lib/postgresql/9.3/main/base

My question is:

Is there any form to import theese data to my (now) new postgres database?

I think copy paste is not going to work.

Maybe with some import? Or have I permanentely lost all my data?

I run postgres 9.3 in Ubuntu 14.04

Thanks