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2008年,在对天津某锅炉供暖系统在节能改造中,充分考虑安全因素,并对其进行危险辨识与评价,在此基础上发挥改造的节能潜力,取得了良好效果。1项目简介该锅炉供暖系统供暖面积24万m~2,其中公共建筑(学校、办公楼)供暖面积8万m~2,集中供暖方式,设有4.2MW链条锅炉3台。锅炉房2002年安装了DCS系统,随着近几年自动化控制技术的发展,2008年对该锅炉供暖系统进行节能改造,主要依靠DCS实现供暖系统自动化,实现供暖负荷的自动跟踪及公共建筑的分时供暖。2节能设计方案该系统供暖用户主要包括居民楼房和公共建筑两部分,两部分有独立的供暖管线。2002年该锅炉房安装DCS系统,但测点设置和功能有待完善。根据该系统特点,主要提出以下初步节能方案:1)负荷自动跟踪。即根据天气情况自动调整锅炉负荷以保证用户室内温度在舒适的温度范围(16~20℃)之内。设置适当气温与总供水温度的变化曲线,气温变
In 2008, in the energy-saving retrofit of a boiler heating system in Tianjin, safety factors were fully taken into consideration and hazard identification and evaluation was carried out. On the basis of this, the energy-saving potential of retrofitting was brought into play and good results were achieved. 1 Project Profile The heating area of the boiler heating system is 240,000 m 2, of which the heating area of public buildings (schools and office buildings) is 80,000 m 2 and the mode of central heating is provided. There are 3 sets of 4.2 MW chain boilers. Boiler room installed DCS system in 2002, with the development of automation control technology in recent years, the boiler heating system in 2008 to carry out energy-saving renovation, mainly rely on DCS to achieve heating system automation, heating load to achieve automatic tracking and public buildings When heating 2 energy-saving design The heating system users include residential buildings and public buildings in two parts, two independent heating pipes. In 2002, the boiler room installed DCS system, but the measuring point setting and functions need to be improved. According to the characteristics of the system, the following preliminary energy saving plan is proposed: 1) automatic load tracking. That is, according to the weather conditions automatically adjust the boiler load to ensure that the user room temperature within a comfortable temperature range (16 ~ 20 ℃) within. Set the appropriate temperature and total water temperature curve, the temperature changes