文档介绍：摘要通过对北京市海淀区、西城区和丰台区三个地区的近150台供暖锅炉进行改造前后的调查, 将采集的数据利用动态费用年值法、模糊综合评价法、A-P值法等方法进行分析比较后,深入的了解北京市供暖现状及发展潜力。文中比较的对象为同种燃料不同吨位供暖锅炉、同种吨位不同燃料供暖锅炉和集中与分户供暖。进行比较分析的指标主要为环境污染指标(烟气产生量、S02排放浓度、Nox排放浓度、烟尘排放浓度等)、经济费用指标(燃料费用、运行费用、供暖成本、耗电费用、耗水费用、人工费、维修费等)和锅炉性能指标(年均热效率)。我们得出以下结论:首先,同种燃料不同吨位供暖锅炉基本遵循随着锅炉吨位增加污染物排放浓度增加,同时供暖成本降低、热效率升高的趋势;另外,对于同种吨位不同燃料盼供暖锅炉。如果将电能只作为终端能源考虑,即其为清洁能源,则供暖无污染。燃气集中供暖污染物j非放量仅次于电供暖,燃煤供暖污染最严重。但若将使用一次能源发电过程中的污染物也折算加入电供暖后,则燃气集中供暖的污染最小。电供暖和燃煤供暖污染相当。因此从接个大气环境考虑,电供暖并无减缓环境污染的作用;最后燃气分户供暖的污染物排放浓度与燃气集中供暖相差无几,但由于其属于分散排放,,燃气分户供暖的供暖成本也高于燃气集中供暖。关键词:集中,分户,供暖方式,环境污染,供暖费用 Abstract we investigated about 150heating boilerswhich anchanged andnotchanged inHaidiandistrict, Xicheng districtandFangtal andanalyze thedam using dynamic costmethod, fu=prehensive evaluation and so we can deeply find out theheating actuality and development potential inBeijing. The contrastive items arche娟ng boilersofthe same fuelbutdifferenttons,heating boilers ofthe sametonbutdifierentfuels andthedifferencebetween districtheatingand pared andanalyzed tal pollutionindex(the smoke qumfity,the S02 denstiy, theNOx density,the soot density and son on),the economic costindex(fuel cost,running cost,total heating cost,eleatriealcost,water cost,worker pay,upkeep and soon)and boiler eapability index (efficiency).The main results are asfollows:First,the heating boilersofthe same fuelbutdifferent tOllS arc according tothetrendthatthetotalheating eastdecreused and theefficiency increased withthe tons ,the heating boilersofthe same tonbutdifferentfuels,ifthe eleetricity isregarded as cleanchela',theelectricalheatinghasnopollution,thepollution ofgusfueledheatingis secondandthe pollution ofcoal fueled heating most we addthepollution ofgenerating electricity to the electricalheatin吕the pollutionofgus fueledehe胡ng least,but thepollution ofelectrical heating and coalfueled heating we takeinto account the totalairenvironmental quan