摘要
低品位工业余热供暖符合清洁取暖和余热暖民政策,国家鼓励利用低品位工业余热作为城市集中供暖热源的补充。我国有色金属产能和产量总体保持增长趋势,有色金属部门属于高耗能工业部门,而能源的热利用率不足50%,因此存在大量待回收的工业余热。通过介绍我国有色金属产业分布及总体余热利用现状,建立模型分析有色金属的余热供暖潜力。该模型针对不同种类有色金属,分别分析潜在的余热资源,并计算单位质量产品的可利用余热量,乘以产品产量后得到余热总量。根据不同省份的产品产量和供暖热负荷指标,估算出可利用余热供暖的面积。模型预测结果表明,有色金属部门的工业余热主要集中在铅、锌、铜、铝的生产过程中,其余热量未来将呈上升趋势;以现有的产能推算,每年可用于北方地区冬季供暖的余热量有2.7亿GJ,可满足北方城镇3%建筑面积的基础负荷供暖需求。
Using low-grade surplus heat for district heating is in accordance with Clean Heating Policy in China,and therefore is encouraged by the Chinese G overnment.Both production and production capacity of nonferrous metal as a whole keep increasing.The nonferrous metal industry is one of energyintensive sectors,whereas its energy efficiency is no more than 50%,and so a large amount of industrial surplus heat is discarded without any utilization.This paper gives a brief introduction on the geographical distribution of nonferrous metal industry in China and the status quo of surplus heat utilization.And a model is established to analyze and estimate the capability of utilizing surplus heat in nonferrous smelting sector for district heating.The model analyzes all the surplus heat in the production of aluminum,copper,lead,zinc,etc.,and estimates the potential surplus heat in a unit mass of product,and works out the total amount of surplus heat by multiplying the corresponding yield of product.Results show that surplus heat from nonferrous smelting sector is concentrated in the production of aluminum,copper,lead and zinc,and the amount of surplus heat in these for subsectors is very probable to increase in the future.Each year,approximately 270 million G J of surplus heat could be used for heating in Northern China in the winter,which could satisfy the base load of heating demand of more than 3%of floor area in district heating systems in Northern China.
作者
王春林
方豪
夏建军
WANG Chun-lin;FANG Hao;XIA Jian-jun(School of Architecture,Tsinghua University,Beijing 100084,China;School of Architectural and Mechanical Engineering,Chifeng University,Chifeng 024000,Inner Mongolia,China;Fulong Heating Engineering and Technology Limited Company,Chifeng 024000,Inner Mongolia,China)
出处
《建筑节能》
CAS
2019年第12期112-117,共6页
BUILDING ENERGY EFFICIENCY
基金
中国工程院咨询项目《中国建筑节能年度发展研究报告》的支撑.
关键词
清洁供暖
余热暖民
有色金属
余热分析
模型预测
clean heating
industrial surplus heat utilization for heating
nonferrous metals
surplus heat analysis
model prediction
作者简介
王春林(1982),男,蒙古族,内蒙古赤峰人,农业水土工程专业,硕士研究生,研究方向为集中供热(linww11@163.com)。
