A recuperator is a specialized type of heat exchanger that recovers waste heat from exhaust gases or streams and transfers it to incoming gases or air streams, effectively preheating them. This process significantly improves the energy efficiency of various systems by reducing fuel consumption and lowering energy costs. Recuperators are commonly used in industrial processes, gas turbine engines, and other applications where waste heat is available A recuperative heat exchanger is a device that transfers heat between two fluids flowing simultaneously through separate channels, with heat exchange occurring across the separating walls. It’s a type of heat exchanger where the hot and cold fluids flow concurrently, often in opposite directions, without mixing. This contrasts with regenerative heat exchangers, where the same heat transfer surface is alternately exposed to hot and cold fluids