regenerative heat exchanger

A regenerative heat exchanger, also known as a regenerator, is a type of heat exchanger used in thermal-heat recovery. Unlike recuperators that continuously transfer heat between fluids across a dividing wall, regenerators operate periodically. They work by allowing heat to transfer to an absorbent medium during a charging phase, and then releasing that stored heat to a cooler fluid during an unloading phase. This process is crucial for capturing waste heat from industrial processes that would otherwise be lost to the environment, thereby reducing fossil-fuel consumption. Regenerative cycles are employed in steam engines and steam turbines to utilize heat that would typically be lost, often by using bled steam to preheat condensate or feedwater.12