How can we find out that a permeate is occured in our shell and tube heat exchanger ?
Definition of permeate: to pass through the pores or interstices of. In imply that you have permeate in a shell-and-tube heat exchanger means that higher pressure medium is passing into the lower pressure side and medium of the heat exchanger. The only way for that to happen is if it has leaks.
If you are referring to a tube rupture check the low pressure side for contamination from the fluid on the high pressure side. This problem can sometimes be a safety concern when the high pressure side is at a pressure above the test pressure of the low pressure side.
