Hi,

I'm interested in background information on water cooling towers. 
Areas of interest:

1. What are their industry average cost per ton or whatever
measurement system they use to identify the efficiency of the systems?

2. What are the largets five suppliers of cooling towers in the world?

3. List a few facts about their pro's and con's?

4. List a few references of their establishment and running costs at
any given example size?

5. What industries use the the most?  List the five biggest consumers
of this technology and if you can, please list them by percentage?

7. Since they do consume power, is their source of power usually an
electric plant and how much does that power typically cost in the U.S.
and possibly one other continent example?

Thank you.

-Mao