摘要
工业生产过程中产生的大量低温余热通过烟气、冷却介质等形式散发到环境中,将这些热能回收利用对提高能源利用率、促进实现“双碳”目标具有重要作用。文章通过详细回顾现有工厂利用低温余热的案例,对比不同热源条件下的换热方案及节能效果,得出低温余热具有余热制热、原材料预热及防冻、余热制冷、余热发电等广泛用途;指出在利用低温余热资源时,应重点关注热源的特点及工厂需求等方面,选择与企业适配的余热利用方式;并对低温余热在节能减排中发挥的重要作用提出展望。
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.
作者
吴维成
谷志卿
鞠朋
彭贝贝
张静
Wu Weicheng;Gu Zhiqing;Ju Peng;Peng Beibei;Zhang Jing(Carbon Peak and Carbon Neutralization Research Institute,Shenyang Institute of Engineering,Shenyang 110136,China;College of Petrochemical Engineering,LiaoNing Petrochemical University,Fushun 113005,China;College of New Energy,Nanjing University of Science and Technology,Nanjing 210000,China)
出处
《可再生能源》
CAS
CSCD
北大核心
2024年第8期1096-1103,共8页
Renewable Energy Resources
基金
辽宁省科技厅应用基础研究计划(2022JH2/101300122)
辽宁省教育厅重点攻关项目(LJKZZ20220142)。
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
energy conservation and emission reduction
low-temperature industrial waste heat
waste heat-based heat supply
waste heat refrigeration
low-temperature waste heat power generation
