A large amount of low-temperature waste heat generated in the industrial production process dissipates in the atmosphere through flue gas and cooling media.Recovering and utilizing such heat is of a great significance for improving energy efficiency and promoting the achievement of"dual carbon"goals.With a detailed review of cases of utilization of low-temperature waste heat by existing factories,this paper compares heat exchange schemes and energy conservation effects under different heat source conditions,deriving that low-temperature waste heat has a wide range of applications from waste heat heating,raw material pre-heating and anti-freezing,waste heat refrigeration to waste heat power generation.It is pointed out that when utilizing low-temperature waste heat resources,attention should be paid to heat source characteristics and factory needs and utilization approaches adapted to enterprises should be selected.Further,this paper also presents a prospect of the important effect of low-temperature waste heat in energy conservation and emission reduction.
关键词
节能减排/工业低温余热/余热供暖/余热制冷/低温余热发电
Key words
energy conservation and emission reduction/low-temperature industrial waste heat/waste heat-based heat supply/waste heat refrigeration/low-temperature waste heat power generation
维普
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