A hairpin heat exchanger can be described as a single-pass shell-and-tube unit that has been folded in half to give it a hairpin appearance. ... Hairpin heat exchanger closures allow for a removable tube bundle and accommodate thermal expansion without requiring expansion or packed joints.Hairpin exchangers are jacketed 'U' tube exchangers operating in a true countercurrent flow, allowing also temperature cross (hot fluid outlet temperature is below cold fluid outlet temperature) with a very efficient design.In this desing we have a studied model, with the solidworks drawings for every part, with the the study repport in needed.