What are the most efficient heat exchnagers used as vapor condenser?

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Jerry Decker

A spray tower with cold spray is one of the most effective condensers. Other types of condensers are chosen from a better understanding of your system, what utilities are available and how the condensate will be used.

Himadri Nath Saha

http://www.idc-online.com/technical_references/pdfs/mechanical_engineering/Shell_and_tube_heat_exchanger.pdf

http://webserver.dmt.upm.es/~isidoro/bk3/c12/Heat%20exchangers.pdf