i appreciate if you refer me to site or an article
Shell and tube heat exchangers are extensively used in the 'oil refineries'. They are, also used in the small desalinization plants(conversion of salt water to fresh water. The 'beauty' of shell and tube exch. is that , by unbolting the two end bells, you can pull out the tube framework and perform cleaning/maintenance.
In fact, you can use a shell and tube heat exchanger where ever you have two fluids that need to exchange heat. That means just about any industry you can imagine. Some of the most common are power generation, oil and gas industry, chemical industry, food industry, medical industry, HVAC systems.
