CaptainPanic

The more posts you have, the larger the title.

This thread is not completely correct anymore, but will give a rough idea: http://www.scienceforums.net/topic/50868-what-are-the-post-count-ranks/

[bankaccount empty - insert coin]

You can read about u-tube heat exchangers in books like Perry's Handbook, or Coulson&Richardson. I don't know any book/website about the specific topic you need.

Just ask your colleagues.