节能技术与应用57NO.122023节能ENERGYCONSERVATION节能技术在长输供热工程中的应用刘建国1闫耀峰1杨统元2何亚军2周小三1靳江浩1(1.中冶西北工程技术有限公司,内蒙古包头014010;2.上海宝冶集团郑州分公司,河南郑州450000)摘要:以某长距离大温差供热工程为例,着重对大温差热泵供热技术、涂层减阻降耗技术、智慧热网调节技术、隔热托座节能技术、架空管道新型保温材料应用、井室防水技术等进行研究。通过理论计算并结合实际工程案例分析,对采用以上节能技术的长输供热工程案例与未采用节能技术的供热工程进行对比分析。结果显示:采用节能新技术新材料,管径为DN1400的热水管网运行两年后,在供回水温度为130℃/30℃,额定流量为15300t/h的条件下,沿程温度降低至0.067℃/km,为《城镇供热系统节能技术规范》(CJJ/T185—2012)规定的沿程温降(0.1℃/km)的67%;管道当量粗糙度约为0.2mm,为《城镇供热管网设计标准》(CJJ/T34—2022)规定的管道当量粗糙度(0.5mm)的40%。供热系统沿程阻力降低20%~25%,热损失总体降低20%~40%,节能效果显著,提升了项目的综合经济效益。关键词:热泵机组;大温差;智慧热网;节能减排;涂层减阻;隔热托中图分类号:TU833文献标志码:A文章编号:1004-7948(2023)12-0057-04doi:10.3969/j.issn.1004-7948.2023.12.016Applicationofenergy-savingtechnologyinlong-distanceheatsupplyprojectLIUJian-guoYANYao-fengYANGTong-yuanHEYa-junZHOUXiao-sanJINJiang-haoAbstract:Takingalong-distanceandlargetemperaturedifferenceheatsupplyprojectasanexample,thispaperfocusesontheresearchofnewtechnologyapplicationssuchaslargetemperaturedifferenceheatpumpheatingtechnology,coatingdragreductionandconsumptionreductiontechnology,smartheatnetworktechnology,insulationbracketenergy-savingtechnology,applicationofnewthermalinsulationmaterialsforoverheadpipelines,andwell-waterproofingtechnology.Throughtheoreticalcalculationandactualprojectcaseanalysis,thelongdistanceheatsupplyprojectcasewhichhasadoptedtheaboveenergy-savingtechnologyiscomparedwiththeprojectwhichhasnotadoptedtheenergy-savingtechnologyinthepreviousproject.Theresultsshowthatafterusingthenewenergy-savingtechnologiesandmaterialsmentionedabove,thetemperaturedropoftheheatpipenetworkwithDN1400diam...