hair pin Vs S&T

[picasa]

what is the criteria for selecting a hair pin heat exchanger over shell and tube heat exchanger and vice versa. Is a shell and tube more effective than a hairpin? What is the advantage of hairpin ove S&T?

 

[abeltio]

see Process Heat Transfer by Donald Q. Kern.
hair pin is for very low flowrates and specially good when the temperature crossing is significant.

saludos.
a.