The emphasis in this book will be on recuperative heat exchangers. There being by far the most common but this analysis can be extended to the other types.
Examples of these types:
Recuperation: Automotive radiators, oil coolers, power station condensers, economizer.
Regenerative: Rotating matrix used to preheat exhaust gases, Stirling Cycle engine.
Direct contact: Cooling of hot metal sheet by a spray of water of air jet, cooling by solid walls. The dominant mechanisms of heat transfer are illustrated in Figure 5.1: