Waste heat recovery

Air compressors typically do not use thermal efficiency as a standalone metric; instead, they place greater emphasis on adiabatic efficiency, isothermal efficiency, volumetric efficiency, and specific power. Under typical operating conditions, compression efficiency generally ranges from about 60%…

This paper focuses on the calculation formula for the thermal conversion efficiency of air compressors, outlining its fundamental meaning, a general algorithm, and methods for estimating heat recovery. It presents computational approaches for hot‑water and hot‑air applications and…