Thermal power units

as a cornerstone of conventional electricity generation

release considerable quantities of waste heat during their operation. If not effectively harnessed

this waste heat will result in substantial energy inefficiency and exacerbate environmental challenges. Consequently

the efficient recovery and utilization of waste heat from thermal power units represents a pivotal strategy for optimizing energy use and mitigating carbon emissions. The energy-saving and carbon-reduction potential of various cycle components in thermal power units should be thoroughly explored. Conducting parameter matching to enable the efficient and comprehensive utilization of waste heat at different grades in thermal power units holds significant importance for achieving deep energy conservation and emission reductions in China's thermal power industry. A comprehensive examination of waste heat recovery in thermal power units is provided. It begins by identifying the primary sources and distinctive characteristics of waste heat. Subsequently

it delves into specific recovery methodologies and their technical principles

encompassing low-pressure turbine exhaust heat utilization

flue gas heat recovery

boiler blowdown and continuous blowdown heat recovery. For each method

the system configuration

current deployment status

economic feasibility

and environmental benefits are analyzed in detail. The strengths and limitations of these approaches are critically evaluated. Finally

the future prospects and developmental trajectories of waste heat recovery technologies in the thermal power sector are thoroughly explored and anticipated.